./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh --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 d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:11:59,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:11:59,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:11:59,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:11:59,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:11:59,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:11:59,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:11:59,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:11:59,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:11:59,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:11:59,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:11:59,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:11:59,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:11:59,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:11:59,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:11:59,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:11:59,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:11:59,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:11:59,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:11:59,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:11:59,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:11:59,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:11:59,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:11:59,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:11:59,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:11:59,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:11:59,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:11:59,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:11:59,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:11:59,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:11:59,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:11:59,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:11:59,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:11:59,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:11:59,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:11:59,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:11:59,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:11:59,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:11:59,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:11:59,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:11:59,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:11:59,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 10:11:59,655 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:11:59,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:11:59,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:11:59,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:11:59,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:11:59,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:11:59,657 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:11:59,657 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:11:59,657 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:11:59,657 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:11:59,657 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:11:59,657 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:11:59,658 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:11:59,658 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:11:59,658 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:11:59,658 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:11:59,658 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:11:59,658 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:11:59,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:11:59,659 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:11:59,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:11:59,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:11:59,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:11:59,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:11:59,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:11:59,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:11:59,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:11:59,660 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:11:59,661 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:11:59,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:11:59,661 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:11:59,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:11:59,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:11:59,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:11:59,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:11:59,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:11:59,662 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:11:59,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:11:59,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:11:59,662 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:11:59,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:11:59,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:11:59,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:11:59,663 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_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 [2022-12-14 10:11:59,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:11:59,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:11:59,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:11:59,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:11:59,848 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:11:59,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2022-12-14 10:12:02,477 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:12:02,705 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:12:02,706 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2022-12-14 10:12:02,718 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/data/c2e093b8e/d3656d5a388e474aa414b55d6c0f1526/FLAGffb796097 [2022-12-14 10:12:02,732 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/data/c2e093b8e/d3656d5a388e474aa414b55d6c0f1526 [2022-12-14 10:12:02,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:12:02,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:12:02,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:12:02,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:12:02,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:12:02,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:12:02" (1/1) ... [2022-12-14 10:12:02,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773ecee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:02, skipping insertion in model container [2022-12-14 10:12:02,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:12:02" (1/1) ... [2022-12-14 10:12:02,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:12:02,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:12:02,887 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_7a9897af-6388-4856-80c0-f7068e4d42b9/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i[1087,1100] [2022-12-14 10:12:03,022 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-14 10:12:03,025 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-14 10:12:03,027 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-14 10:12:03,032 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-14 10:12:03,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:12:03,041 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:12:03,049 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_7a9897af-6388-4856-80c0-f7068e4d42b9/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i[1087,1100] [2022-12-14 10:12:03,070 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-14 10:12:03,071 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-14 10:12:03,072 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-14 10:12:03,075 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-14 10:12:03,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:12:03,111 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:12:03,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03 WrapperNode [2022-12-14 10:12:03,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:12:03,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:12:03,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:12:03,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:12:03,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (1/1) ... [2022-12-14 10:12:03,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (1/1) ... [2022-12-14 10:12:03,148 INFO L138 Inliner]: procedures = 271, calls = 45, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 107 [2022-12-14 10:12:03,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:12:03,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:12:03,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:12:03,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:12:03,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (1/1) ... [2022-12-14 10:12:03,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (1/1) ... [2022-12-14 10:12:03,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (1/1) ... [2022-12-14 10:12:03,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (1/1) ... [2022-12-14 10:12:03,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (1/1) ... [2022-12-14 10:12:03,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (1/1) ... [2022-12-14 10:12:03,173 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (1/1) ... [2022-12-14 10:12:03,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (1/1) ... [2022-12-14 10:12:03,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:12:03,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:12:03,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:12:03,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:12:03,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (1/1) ... [2022-12-14 10:12:03,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:12:03,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:03,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:12:03,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:12:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2022-12-14 10:12:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:12:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2022-12-14 10:12:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2022-12-14 10:12:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:12:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:12:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 10:12:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:12:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2022-12-14 10:12:03,246 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2022-12-14 10:12:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure process [2022-12-14 10:12:03,246 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2022-12-14 10:12:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:12:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:12:03,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:12:03,247 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 10:12:03,459 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:12:03,461 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:12:03,626 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:12:03,631 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:12:03,632 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 10:12:03,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:12:03 BoogieIcfgContainer [2022-12-14 10:12:03,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:12:03,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:12:03,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:12:03,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:12:03,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:12:02" (1/3) ... [2022-12-14 10:12:03,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e74dbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:12:03, skipping insertion in model container [2022-12-14 10:12:03,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:12:03" (2/3) ... [2022-12-14 10:12:03,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e74dbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:12:03, skipping insertion in model container [2022-12-14 10:12:03,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:12:03" (3/3) ... [2022-12-14 10:12:03,640 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2022-12-14 10:12:03,646 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 10:12:03,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:12:03,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-14 10:12:03,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 10:12:03,698 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-14 10:12:03,723 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:12:03,734 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 177 transitions, 369 flow [2022-12-14 10:12:03,736 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 177 transitions, 369 flow [2022-12-14 10:12:03,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 177 transitions, 369 flow [2022-12-14 10:12:03,785 INFO L130 PetriNetUnfolder]: 12/174 cut-off events. [2022-12-14 10:12:03,785 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-14 10:12:03,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 174 events. 12/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 384 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-12-14 10:12:03,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 12642 [2022-12-14 10:12:07,741 INFO L134 LiptonReduction]: Checked pairs total: 24019 [2022-12-14 10:12:07,742 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-12-14 10:12:07,750 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 55 transitions, 125 flow [2022-12-14 10:12:08,107 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10411 states, 10349 states have (on average 4.1786646052758725) internal successors, (43245), 10410 states have internal predecessors, (43245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:08,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:12:08,131 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;@724494c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:12:08,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-14 10:12:08,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 10411 states, 10349 states have (on average 4.1786646052758725) internal successors, (43245), 10410 states have internal predecessors, (43245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 10:12:08,156 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:08,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:08,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting generateErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:08,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:08,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2048798159, now seen corresponding path program 1 times [2022-12-14 10:12:08,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:08,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058621749] [2022-12-14 10:12:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:08,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:08,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:08,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058621749] [2022-12-14 10:12:08,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058621749] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:08,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:08,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:12:08,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742157174] [2022-12-14 10:12:08,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:08,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:12:08,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:08,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:12:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:08,535 INFO L87 Difference]: Start difference. First operand has 10411 states, 10349 states have (on average 4.1786646052758725) internal successors, (43245), 10410 states have internal predecessors, (43245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:08,921 INFO L93 Difference]: Finished difference Result 12794 states and 53390 transitions. [2022-12-14 10:12:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:12:08,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 10:12:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:09,034 INFO L225 Difference]: With dead ends: 12794 [2022-12-14 10:12:09,035 INFO L226 Difference]: Without dead ends: 12794 [2022-12-14 10:12:09,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:09,038 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 40 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:09,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 14 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:09,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12794 states. [2022-12-14 10:12:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12794 to 12794. [2022-12-14 10:12:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12794 states, 12794 states have (on average 4.173049867125215) internal successors, (53390), 12793 states have internal predecessors, (53390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12794 states to 12794 states and 53390 transitions. [2022-12-14 10:12:09,667 INFO L78 Accepts]: Start accepts. Automaton has 12794 states and 53390 transitions. Word has length 7 [2022-12-14 10:12:09,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:09,667 INFO L495 AbstractCegarLoop]: Abstraction has 12794 states and 53390 transitions. [2022-12-14 10:12:09,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:09,668 INFO L276 IsEmpty]: Start isEmpty. Operand 12794 states and 53390 transitions. [2022-12-14 10:12:09,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:12:09,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:09,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:09,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:12:09,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:09,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:09,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1087852054, now seen corresponding path program 1 times [2022-12-14 10:12:09,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:09,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187151302] [2022-12-14 10:12:09,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:09,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:09,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:09,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187151302] [2022-12-14 10:12:09,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187151302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:09,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:09,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:12:09,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267361021] [2022-12-14 10:12:09,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:09,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:12:09,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:09,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:12:09,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:09,778 INFO L87 Difference]: Start difference. First operand 12794 states and 53390 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:10,162 INFO L93 Difference]: Finished difference Result 19682 states and 81635 transitions. [2022-12-14 10:12:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:12:10,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:12:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:10,250 INFO L225 Difference]: With dead ends: 19682 [2022-12-14 10:12:10,250 INFO L226 Difference]: Without dead ends: 19682 [2022-12-14 10:12:10,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:10,251 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:10,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 10 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19682 states. [2022-12-14 10:12:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19682 to 17218. [2022-12-14 10:12:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17218 states, 17218 states have (on average 4.238761760947845) internal successors, (72983), 17217 states have internal predecessors, (72983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17218 states to 17218 states and 72983 transitions. [2022-12-14 10:12:10,870 INFO L78 Accepts]: Start accepts. Automaton has 17218 states and 72983 transitions. Word has length 8 [2022-12-14 10:12:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:10,871 INFO L495 AbstractCegarLoop]: Abstraction has 17218 states and 72983 transitions. [2022-12-14 10:12:10,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand 17218 states and 72983 transitions. [2022-12-14 10:12:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:12:10,872 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:10,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:10,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:12:10,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:10,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:10,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1087852093, now seen corresponding path program 1 times [2022-12-14 10:12:10,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:10,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564963565] [2022-12-14 10:12:10,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:10,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:10,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:10,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564963565] [2022-12-14 10:12:10,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564963565] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:10,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:10,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:12:10,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418844021] [2022-12-14 10:12:10,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:10,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:12:10,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:10,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:12:10,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:10,958 INFO L87 Difference]: Start difference. First operand 17218 states and 72983 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:11,233 INFO L93 Difference]: Finished difference Result 21922 states and 90875 transitions. [2022-12-14 10:12:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:12:11,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 10:12:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:11,315 INFO L225 Difference]: With dead ends: 21922 [2022-12-14 10:12:11,315 INFO L226 Difference]: Without dead ends: 21922 [2022-12-14 10:12:11,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:11,316 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 32 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:11,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 10 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:11,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21922 states. [2022-12-14 10:12:11,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21922 to 19346. [2022-12-14 10:12:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19346 states, 19346 states have (on average 4.226248320066164) internal successors, (81761), 19345 states have internal predecessors, (81761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19346 states to 19346 states and 81761 transitions. [2022-12-14 10:12:11,869 INFO L78 Accepts]: Start accepts. Automaton has 19346 states and 81761 transitions. Word has length 8 [2022-12-14 10:12:11,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:11,869 INFO L495 AbstractCegarLoop]: Abstraction has 19346 states and 81761 transitions. [2022-12-14 10:12:11,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand 19346 states and 81761 transitions. [2022-12-14 10:12:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:12:11,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:11,870 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 10:12:11,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:12:11,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting generateErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:11,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1085350312, now seen corresponding path program 1 times [2022-12-14 10:12:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:11,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988446037] [2022-12-14 10:12:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:11,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:12:11,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:11,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988446037] [2022-12-14 10:12:11,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988446037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:11,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:11,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:12:11,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162174253] [2022-12-14 10:12:11,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:11,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:12:11,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:11,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:12:11,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:11,920 INFO L87 Difference]: Start difference. First operand 19346 states and 81761 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:12,113 INFO L93 Difference]: Finished difference Result 17552 states and 74197 transitions. [2022-12-14 10:12:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:12:12,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 10:12:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:12,180 INFO L225 Difference]: With dead ends: 17552 [2022-12-14 10:12:12,180 INFO L226 Difference]: Without dead ends: 17552 [2022-12-14 10:12:12,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:12,181 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 41 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:12,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 13 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:12,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17552 states. [2022-12-14 10:12:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17552 to 17552. [2022-12-14 10:12:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17552 states, 17552 states have (on average 4.227267547857794) internal successors, (74197), 17551 states have internal predecessors, (74197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17552 states to 17552 states and 74197 transitions. [2022-12-14 10:12:12,742 INFO L78 Accepts]: Start accepts. Automaton has 17552 states and 74197 transitions. Word has length 11 [2022-12-14 10:12:12,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:12,742 INFO L495 AbstractCegarLoop]: Abstraction has 17552 states and 74197 transitions. [2022-12-14 10:12:12,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:12,742 INFO L276 IsEmpty]: Start isEmpty. Operand 17552 states and 74197 transitions. [2022-12-14 10:12:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:12:12,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:12,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 10:12:12,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:12:12,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting generateErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1085350313, now seen corresponding path program 1 times [2022-12-14 10:12:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:12,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959891463] [2022-12-14 10:12:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:12,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:12,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:12,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959891463] [2022-12-14 10:12:12,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959891463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:12,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:12,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:12:12,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736479534] [2022-12-14 10:12:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:12,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:12:12,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:12,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:12:12,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:12,808 INFO L87 Difference]: Start difference. First operand 17552 states and 74197 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:13,028 INFO L93 Difference]: Finished difference Result 15758 states and 66633 transitions. [2022-12-14 10:12:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:12:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 10:12:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:13,091 INFO L225 Difference]: With dead ends: 15758 [2022-12-14 10:12:13,091 INFO L226 Difference]: Without dead ends: 15758 [2022-12-14 10:12:13,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:13,092 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 41 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:13,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 13 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15758 states. [2022-12-14 10:12:13,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15758 to 11272. [2022-12-14 10:12:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11272 states, 11272 states have (on average 4.226135557132718) internal successors, (47637), 11271 states have internal predecessors, (47637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:13,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11272 states to 11272 states and 47637 transitions. [2022-12-14 10:12:13,449 INFO L78 Accepts]: Start accepts. Automaton has 11272 states and 47637 transitions. Word has length 11 [2022-12-14 10:12:13,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:13,449 INFO L495 AbstractCegarLoop]: Abstraction has 11272 states and 47637 transitions. [2022-12-14 10:12:13,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:13,450 INFO L276 IsEmpty]: Start isEmpty. Operand 11272 states and 47637 transitions. [2022-12-14 10:12:13,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:12:13,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:13,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:13,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:12:13,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:13,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:13,452 INFO L85 PathProgramCache]: Analyzing trace with hash 776623367, now seen corresponding path program 1 times [2022-12-14 10:12:13,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:13,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52641932] [2022-12-14 10:12:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:13,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:13,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:13,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52641932] [2022-12-14 10:12:13,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52641932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:13,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:13,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:12:13,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772274606] [2022-12-14 10:12:13,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:13,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:12:13,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:13,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:12:13,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:12:13,585 INFO L87 Difference]: Start difference. First operand 11272 states and 47637 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:13,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:13,825 INFO L93 Difference]: Finished difference Result 16710 states and 70224 transitions. [2022-12-14 10:12:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:12:13,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 10:12:13,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:13,875 INFO L225 Difference]: With dead ends: 16710 [2022-12-14 10:12:13,876 INFO L226 Difference]: Without dead ends: 16710 [2022-12-14 10:12:13,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:13,876 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:13,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 23 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16710 states. [2022-12-14 10:12:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16710 to 12956. [2022-12-14 10:12:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12956 states, 12956 states have (on average 4.251234949058351) internal successors, (55079), 12955 states have internal predecessors, (55079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:14,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12956 states to 12956 states and 55079 transitions. [2022-12-14 10:12:14,179 INFO L78 Accepts]: Start accepts. Automaton has 12956 states and 55079 transitions. Word has length 11 [2022-12-14 10:12:14,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:14,179 INFO L495 AbstractCegarLoop]: Abstraction has 12956 states and 55079 transitions. [2022-12-14 10:12:14,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:14,180 INFO L276 IsEmpty]: Start isEmpty. Operand 12956 states and 55079 transitions. [2022-12-14 10:12:14,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:12:14,181 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:14,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:14,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:12:14,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:14,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:14,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1626205512, now seen corresponding path program 1 times [2022-12-14 10:12:14,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:14,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089242219] [2022-12-14 10:12:14,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:14,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:14,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:14,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089242219] [2022-12-14 10:12:14,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089242219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:14,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:14,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:12:14,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343984472] [2022-12-14 10:12:14,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:14,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:12:14,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:14,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:12:14,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:14,261 INFO L87 Difference]: Start difference. First operand 12956 states and 55079 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:14,526 INFO L93 Difference]: Finished difference Result 18388 states and 76870 transitions. [2022-12-14 10:12:14,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:12:14,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 10:12:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:14,588 INFO L225 Difference]: With dead ends: 18388 [2022-12-14 10:12:14,588 INFO L226 Difference]: Without dead ends: 18388 [2022-12-14 10:12:14,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:12:14,589 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 124 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:14,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 28 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:12:14,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18388 states. [2022-12-14 10:12:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18388 to 15644. [2022-12-14 10:12:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15644 states, 15644 states have (on average 4.286819227818972) internal successors, (67063), 15643 states have internal predecessors, (67063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15644 states to 15644 states and 67063 transitions. [2022-12-14 10:12:15,029 INFO L78 Accepts]: Start accepts. Automaton has 15644 states and 67063 transitions. Word has length 11 [2022-12-14 10:12:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:15,030 INFO L495 AbstractCegarLoop]: Abstraction has 15644 states and 67063 transitions. [2022-12-14 10:12:15,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 15644 states and 67063 transitions. [2022-12-14 10:12:15,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:12:15,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:15,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:15,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:12:15,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting processErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:15,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:15,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1626205493, now seen corresponding path program 1 times [2022-12-14 10:12:15,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:15,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302791120] [2022-12-14 10:12:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:15,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:15,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:15,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:15,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302791120] [2022-12-14 10:12:15,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302791120] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:15,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:15,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:12:15,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236584574] [2022-12-14 10:12:15,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:15,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:12:15,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:15,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:12:15,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:15,114 INFO L87 Difference]: Start difference. First operand 15644 states and 67063 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:15,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:15,458 INFO L93 Difference]: Finished difference Result 20460 states and 86089 transitions. [2022-12-14 10:12:15,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:12:15,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 10:12:15,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:15,542 INFO L225 Difference]: With dead ends: 20460 [2022-12-14 10:12:15,542 INFO L226 Difference]: Without dead ends: 20460 [2022-12-14 10:12:15,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:12:15,543 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 170 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:15,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 26 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:12:15,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20460 states. [2022-12-14 10:12:15,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20460 to 16932. [2022-12-14 10:12:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16932 states, 16932 states have (on average 4.2745098039215685) internal successors, (72376), 16931 states have internal predecessors, (72376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16932 states to 16932 states and 72376 transitions. [2022-12-14 10:12:16,001 INFO L78 Accepts]: Start accepts. Automaton has 16932 states and 72376 transitions. Word has length 11 [2022-12-14 10:12:16,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:16,002 INFO L495 AbstractCegarLoop]: Abstraction has 16932 states and 72376 transitions. [2022-12-14 10:12:16,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 16932 states and 72376 transitions. [2022-12-14 10:12:16,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:12:16,003 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:16,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:16,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:12:16,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:16,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:16,003 INFO L85 PathProgramCache]: Analyzing trace with hash 864888064, now seen corresponding path program 1 times [2022-12-14 10:12:16,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:16,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649209359] [2022-12-14 10:12:16,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:16,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:16,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:16,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649209359] [2022-12-14 10:12:16,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649209359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:16,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:16,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:12:16,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725173594] [2022-12-14 10:12:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:16,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:12:16,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:12:16,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:16,073 INFO L87 Difference]: Start difference. First operand 16932 states and 72376 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:16,304 INFO L93 Difference]: Finished difference Result 25992 states and 111506 transitions. [2022-12-14 10:12:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:12:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 10:12:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:16,397 INFO L225 Difference]: With dead ends: 25992 [2022-12-14 10:12:16,397 INFO L226 Difference]: Without dead ends: 25992 [2022-12-14 10:12:16,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:16,398 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:16,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 18 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25992 states. [2022-12-14 10:12:16,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25992 to 25992. [2022-12-14 10:12:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25992 states, 25992 states have (on average 4.290012311480456) internal successors, (111506), 25991 states have internal predecessors, (111506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25992 states to 25992 states and 111506 transitions. [2022-12-14 10:12:16,949 INFO L78 Accepts]: Start accepts. Automaton has 25992 states and 111506 transitions. Word has length 12 [2022-12-14 10:12:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:16,950 INFO L495 AbstractCegarLoop]: Abstraction has 25992 states and 111506 transitions. [2022-12-14 10:12:16,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:16,950 INFO L276 IsEmpty]: Start isEmpty. Operand 25992 states and 111506 transitions. [2022-12-14 10:12:16,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 10:12:16,952 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:16,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:16,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:12:16,952 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:16,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:16,953 INFO L85 PathProgramCache]: Analyzing trace with hash -605627865, now seen corresponding path program 1 times [2022-12-14 10:12:16,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:16,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727000967] [2022-12-14 10:12:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:16,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:17,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:17,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727000967] [2022-12-14 10:12:17,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727000967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:17,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:17,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:12:17,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277110241] [2022-12-14 10:12:17,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:17,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:12:17,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:17,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:12:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:17,022 INFO L87 Difference]: Start difference. First operand 25992 states and 111506 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:17,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:17,385 INFO L93 Difference]: Finished difference Result 47444 states and 194637 transitions. [2022-12-14 10:12:17,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:12:17,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 10:12:17,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:17,582 INFO L225 Difference]: With dead ends: 47444 [2022-12-14 10:12:17,582 INFO L226 Difference]: Without dead ends: 47444 [2022-12-14 10:12:17,582 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 [2022-12-14 10:12:17,583 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 26 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:17,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 14 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:17,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47444 states. [2022-12-14 10:12:18,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47444 to 37357. [2022-12-14 10:12:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37357 states, 37357 states have (on average 4.114382846588324) internal successors, (153701), 37356 states have internal predecessors, (153701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37357 states to 37357 states and 153701 transitions. [2022-12-14 10:12:18,606 INFO L78 Accepts]: Start accepts. Automaton has 37357 states and 153701 transitions. Word has length 14 [2022-12-14 10:12:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:18,606 INFO L495 AbstractCegarLoop]: Abstraction has 37357 states and 153701 transitions. [2022-12-14 10:12:18,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 37357 states and 153701 transitions. [2022-12-14 10:12:18,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:12:18,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:18,610 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:18,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:12:18,610 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:18,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1001962220, now seen corresponding path program 1 times [2022-12-14 10:12:18,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:18,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618404570] [2022-12-14 10:12:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:18,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:12:18,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:18,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618404570] [2022-12-14 10:12:18,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618404570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:18,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:18,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:12:18,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482837228] [2022-12-14 10:12:18,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:18,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:12:18,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:18,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:12:18,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:18,659 INFO L87 Difference]: Start difference. First operand 37357 states and 153701 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:18,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:18,953 INFO L93 Difference]: Finished difference Result 34993 states and 143713 transitions. [2022-12-14 10:12:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:12:18,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 10:12:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:19,076 INFO L225 Difference]: With dead ends: 34993 [2022-12-14 10:12:19,076 INFO L226 Difference]: Without dead ends: 34993 [2022-12-14 10:12:19,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:19,077 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:19,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 18 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34993 states. [2022-12-14 10:12:19,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34993 to 34993. [2022-12-14 10:12:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34993 states, 34993 states have (on average 4.106907095704855) internal successors, (143713), 34992 states have internal predecessors, (143713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34993 states to 34993 states and 143713 transitions. [2022-12-14 10:12:20,011 INFO L78 Accepts]: Start accepts. Automaton has 34993 states and 143713 transitions. Word has length 17 [2022-12-14 10:12:20,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:20,011 INFO L495 AbstractCegarLoop]: Abstraction has 34993 states and 143713 transitions. [2022-12-14 10:12:20,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:20,011 INFO L276 IsEmpty]: Start isEmpty. Operand 34993 states and 143713 transitions. [2022-12-14 10:12:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:12:20,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:20,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:20,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:12:20,015 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:20,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1001962218, now seen corresponding path program 1 times [2022-12-14 10:12:20,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:20,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873934881] [2022-12-14 10:12:20,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:20,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:20,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:20,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873934881] [2022-12-14 10:12:20,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873934881] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:12:20,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554441973] [2022-12-14 10:12:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:20,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:20,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:20,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:12:20,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:12:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:20,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:12:20,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:20,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:20,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554441973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:20,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:12:20,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-14 10:12:20,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700347703] [2022-12-14 10:12:20,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:20,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:12:20,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:20,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:12:20,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:20,233 INFO L87 Difference]: Start difference. First operand 34993 states and 143713 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:20,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:20,592 INFO L93 Difference]: Finished difference Result 32629 states and 133725 transitions. [2022-12-14 10:12:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:12:20,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 10:12:20,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:20,728 INFO L225 Difference]: With dead ends: 32629 [2022-12-14 10:12:20,728 INFO L226 Difference]: Without dead ends: 32629 [2022-12-14 10:12:20,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:20,729 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 68 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:20,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 30 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:20,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32629 states. [2022-12-14 10:12:21,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32629 to 22726. [2022-12-14 10:12:21,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22726 states, 22726 states have (on average 4.063407550822846) internal successors, (92345), 22725 states have internal predecessors, (92345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22726 states to 22726 states and 92345 transitions. [2022-12-14 10:12:21,407 INFO L78 Accepts]: Start accepts. Automaton has 22726 states and 92345 transitions. Word has length 17 [2022-12-14 10:12:21,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:21,408 INFO L495 AbstractCegarLoop]: Abstraction has 22726 states and 92345 transitions. [2022-12-14 10:12:21,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:21,408 INFO L276 IsEmpty]: Start isEmpty. Operand 22726 states and 92345 transitions. [2022-12-14 10:12:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 10:12:21,412 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:21,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:21,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:12:21,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 10:12:21,614 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:21,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1976173733, now seen corresponding path program 1 times [2022-12-14 10:12:21,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:21,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506352384] [2022-12-14 10:12:21,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:21,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:12:21,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:21,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506352384] [2022-12-14 10:12:21,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506352384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:21,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:21,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:12:21,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456322155] [2022-12-14 10:12:21,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:21,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:12:21,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:21,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:12:21,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:21,679 INFO L87 Difference]: Start difference. First operand 22726 states and 92345 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:21,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:21,885 INFO L93 Difference]: Finished difference Result 24914 states and 99813 transitions. [2022-12-14 10:12:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:12:21,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-14 10:12:21,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:21,969 INFO L225 Difference]: With dead ends: 24914 [2022-12-14 10:12:21,969 INFO L226 Difference]: Without dead ends: 24914 [2022-12-14 10:12:21,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:21,970 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 34 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:21,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 10 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:22,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24914 states. [2022-12-14 10:12:22,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24914 to 22554. [2022-12-14 10:12:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22554 states, 22554 states have (on average 4.028997073689811) internal successors, (90870), 22553 states have internal predecessors, (90870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22554 states to 22554 states and 90870 transitions. [2022-12-14 10:12:22,579 INFO L78 Accepts]: Start accepts. Automaton has 22554 states and 90870 transitions. Word has length 19 [2022-12-14 10:12:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:22,579 INFO L495 AbstractCegarLoop]: Abstraction has 22554 states and 90870 transitions. [2022-12-14 10:12:22,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:22,580 INFO L276 IsEmpty]: Start isEmpty. Operand 22554 states and 90870 transitions. [2022-12-14 10:12:22,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 10:12:22,587 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:22,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:22,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 10:12:22,587 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:22,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:22,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1976173772, now seen corresponding path program 1 times [2022-12-14 10:12:22,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:22,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345001920] [2022-12-14 10:12:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:22,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 10:12:22,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:22,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345001920] [2022-12-14 10:12:22,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345001920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:22,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:22,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:12:22,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095686449] [2022-12-14 10:12:22,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:22,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:12:22,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:22,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:12:22,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:12:22,685 INFO L87 Difference]: Start difference. First operand 22554 states and 90870 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:23,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:23,153 INFO L93 Difference]: Finished difference Result 29646 states and 119406 transitions. [2022-12-14 10:12:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 10:12:23,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-14 10:12:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:23,275 INFO L225 Difference]: With dead ends: 29646 [2022-12-14 10:12:23,275 INFO L226 Difference]: Without dead ends: 29646 [2022-12-14 10:12:23,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:12:23,275 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 168 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:23,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 53 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:12:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29646 states. [2022-12-14 10:12:23,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29646 to 20810. [2022-12-14 10:12:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20810 states, 20810 states have (on average 4.013166746756367) internal successors, (83514), 20809 states have internal predecessors, (83514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:23,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20810 states to 20810 states and 83514 transitions. [2022-12-14 10:12:23,932 INFO L78 Accepts]: Start accepts. Automaton has 20810 states and 83514 transitions. Word has length 19 [2022-12-14 10:12:23,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:23,932 INFO L495 AbstractCegarLoop]: Abstraction has 20810 states and 83514 transitions. [2022-12-14 10:12:23,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:23,932 INFO L276 IsEmpty]: Start isEmpty. Operand 20810 states and 83514 transitions. [2022-12-14 10:12:23,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 10:12:23,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:23,938 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] [2022-12-14 10:12:23,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 10:12:23,938 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:23,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:23,938 INFO L85 PathProgramCache]: Analyzing trace with hash -25060561, now seen corresponding path program 1 times [2022-12-14 10:12:23,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:23,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431585085] [2022-12-14 10:12:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:23,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:23,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:23,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431585085] [2022-12-14 10:12:23,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431585085] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:23,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:23,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:12:23,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105029628] [2022-12-14 10:12:23,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:23,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:12:23,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:23,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:12:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:23,996 INFO L87 Difference]: Start difference. First operand 20810 states and 83514 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:24,244 INFO L93 Difference]: Finished difference Result 24961 states and 99620 transitions. [2022-12-14 10:12:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:12:24,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 10:12:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:24,341 INFO L225 Difference]: With dead ends: 24961 [2022-12-14 10:12:24,341 INFO L226 Difference]: Without dead ends: 24961 [2022-12-14 10:12:24,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:12:24,341 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:24,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 8 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24961 states. [2022-12-14 10:12:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24961 to 24961. [2022-12-14 10:12:24,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24961 states, 24961 states have (on average 3.991026000560875) internal successors, (99620), 24960 states have internal predecessors, (99620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24961 states to 24961 states and 99620 transitions. [2022-12-14 10:12:25,020 INFO L78 Accepts]: Start accepts. Automaton has 24961 states and 99620 transitions. Word has length 20 [2022-12-14 10:12:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:25,020 INFO L495 AbstractCegarLoop]: Abstraction has 24961 states and 99620 transitions. [2022-12-14 10:12:25,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 24961 states and 99620 transitions. [2022-12-14 10:12:25,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 10:12:25,028 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:25,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:25,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 10:12:25,028 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting processErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:25,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:25,029 INFO L85 PathProgramCache]: Analyzing trace with hash -838693698, now seen corresponding path program 1 times [2022-12-14 10:12:25,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:25,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142997437] [2022-12-14 10:12:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:25,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:25,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:25,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142997437] [2022-12-14 10:12:25,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142997437] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:12:25,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367358693] [2022-12-14 10:12:25,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:25,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:25,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:25,134 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:12:25,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:12:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:25,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:12:25,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:25,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:25,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367358693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:25,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:12:25,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-12-14 10:12:25,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141319043] [2022-12-14 10:12:25,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:25,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:12:25,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:25,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:12:25,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:12:25,262 INFO L87 Difference]: Start difference. First operand 24961 states and 99620 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:25,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:25,682 INFO L93 Difference]: Finished difference Result 33680 states and 134942 transitions. [2022-12-14 10:12:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:12:25,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-14 10:12:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:25,817 INFO L225 Difference]: With dead ends: 33680 [2022-12-14 10:12:25,817 INFO L226 Difference]: Without dead ends: 33680 [2022-12-14 10:12:25,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:12:25,818 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 142 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:25,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 31 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:12:25,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33680 states. [2022-12-14 10:12:26,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33680 to 23713. [2022-12-14 10:12:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23713 states, 23713 states have (on average 3.9988192130898663) internal successors, (94824), 23712 states have internal predecessors, (94824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:26,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23713 states to 23713 states and 94824 transitions. [2022-12-14 10:12:26,543 INFO L78 Accepts]: Start accepts. Automaton has 23713 states and 94824 transitions. Word has length 21 [2022-12-14 10:12:26,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:26,543 INFO L495 AbstractCegarLoop]: Abstraction has 23713 states and 94824 transitions. [2022-12-14 10:12:26,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:26,543 INFO L276 IsEmpty]: Start isEmpty. Operand 23713 states and 94824 transitions. [2022-12-14 10:12:26,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 10:12:26,547 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:26,547 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:26,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:12:26,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:26,749 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting processErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:26,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:26,750 INFO L85 PathProgramCache]: Analyzing trace with hash -838693612, now seen corresponding path program 1 times [2022-12-14 10:12:26,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:26,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232210907] [2022-12-14 10:12:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:26,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:26,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:26,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232210907] [2022-12-14 10:12:26,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232210907] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:12:26,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138276443] [2022-12-14 10:12:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:26,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:26,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:26,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:12:26,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:12:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:26,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:12:26,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:26,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:26,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138276443] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:12:26,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [623197929] [2022-12-14 10:12:26,997 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 10:12:26,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:12:26,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-12-14 10:12:26,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978102659] [2022-12-14 10:12:26,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:12:26,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:12:26,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:26,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:12:26,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:12:26,999 INFO L87 Difference]: Start difference. First operand 23713 states and 94824 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:27,647 INFO L93 Difference]: Finished difference Result 47668 states and 189362 transitions. [2022-12-14 10:12:27,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 10:12:27,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-14 10:12:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:27,913 INFO L225 Difference]: With dead ends: 47668 [2022-12-14 10:12:27,913 INFO L226 Difference]: Without dead ends: 47668 [2022-12-14 10:12:27,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2022-12-14 10:12:27,913 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 257 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:27,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 48 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:12:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47668 states. [2022-12-14 10:12:28,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47668 to 35900. [2022-12-14 10:12:28,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35900 states, 35900 states have (on average 3.9705013927576602) internal successors, (142541), 35899 states have internal predecessors, (142541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:28,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35900 states to 35900 states and 142541 transitions. [2022-12-14 10:12:28,730 INFO L78 Accepts]: Start accepts. Automaton has 35900 states and 142541 transitions. Word has length 21 [2022-12-14 10:12:28,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:28,730 INFO L495 AbstractCegarLoop]: Abstraction has 35900 states and 142541 transitions. [2022-12-14 10:12:28,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:28,730 INFO L276 IsEmpty]: Start isEmpty. Operand 35900 states and 142541 transitions. [2022-12-14 10:12:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 10:12:28,734 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:28,734 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] [2022-12-14 10:12:28,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:12:28,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 10:12:28,936 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:28,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:28,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1886292453, now seen corresponding path program 1 times [2022-12-14 10:12:28,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:28,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571731490] [2022-12-14 10:12:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:28,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:29,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:29,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571731490] [2022-12-14 10:12:29,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571731490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:29,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:29,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:12:29,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347432157] [2022-12-14 10:12:29,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:29,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:12:29,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:29,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:12:29,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:12:29,017 INFO L87 Difference]: Start difference. First operand 35900 states and 142541 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:29,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:29,494 INFO L93 Difference]: Finished difference Result 46892 states and 185613 transitions. [2022-12-14 10:12:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 10:12:29,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-14 10:12:29,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:29,653 INFO L225 Difference]: With dead ends: 46892 [2022-12-14 10:12:29,654 INFO L226 Difference]: Without dead ends: 46892 [2022-12-14 10:12:29,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:12:29,654 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 211 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:29,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 50 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:12:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46892 states. [2022-12-14 10:12:30,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46892 to 39236. [2022-12-14 10:12:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39236 states, 39236 states have (on average 3.970205933326537) internal successors, (155775), 39235 states have internal predecessors, (155775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39236 states to 39236 states and 155775 transitions. [2022-12-14 10:12:30,556 INFO L78 Accepts]: Start accepts. Automaton has 39236 states and 155775 transitions. Word has length 21 [2022-12-14 10:12:30,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:30,556 INFO L495 AbstractCegarLoop]: Abstraction has 39236 states and 155775 transitions. [2022-12-14 10:12:30,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 39236 states and 155775 transitions. [2022-12-14 10:12:30,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 10:12:30,562 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:30,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:30,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 10:12:30,562 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:30,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:30,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1516956339, now seen corresponding path program 1 times [2022-12-14 10:12:30,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:30,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634410995] [2022-12-14 10:12:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:30,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:30,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:30,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634410995] [2022-12-14 10:12:30,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634410995] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:12:30,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815208845] [2022-12-14 10:12:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:30,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:30,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:30,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:12:30,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:12:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:30,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:12:30,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:30,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:30,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815208845] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:12:30,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1728782812] [2022-12-14 10:12:30,801 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 10:12:30,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:12:30,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-12-14 10:12:30,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867868651] [2022-12-14 10:12:30,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:12:30,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:12:30,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:30,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:12:30,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:12:30,803 INFO L87 Difference]: Start difference. First operand 39236 states and 155775 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:31,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:31,457 INFO L93 Difference]: Finished difference Result 45008 states and 177399 transitions. [2022-12-14 10:12:31,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:12:31,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-14 10:12:31,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:31,624 INFO L225 Difference]: With dead ends: 45008 [2022-12-14 10:12:31,624 INFO L226 Difference]: Without dead ends: 44562 [2022-12-14 10:12:31,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-12-14 10:12:31,625 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 262 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:31,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 79 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:12:31,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44562 states. [2022-12-14 10:12:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44562 to 42274. [2022-12-14 10:12:32,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42274 states, 42274 states have (on average 3.9593367081421205) internal successors, (167377), 42273 states have internal predecessors, (167377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42274 states to 42274 states and 167377 transitions. [2022-12-14 10:12:32,531 INFO L78 Accepts]: Start accepts. Automaton has 42274 states and 167377 transitions. Word has length 22 [2022-12-14 10:12:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:32,532 INFO L495 AbstractCegarLoop]: Abstraction has 42274 states and 167377 transitions. [2022-12-14 10:12:32,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:32,532 INFO L276 IsEmpty]: Start isEmpty. Operand 42274 states and 167377 transitions. [2022-12-14 10:12:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 10:12:32,538 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:32,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:32,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:12:32,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:32,740 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:32,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:32,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1071422921, now seen corresponding path program 1 times [2022-12-14 10:12:32,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:32,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114129131] [2022-12-14 10:12:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:32,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:12:32,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:32,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114129131] [2022-12-14 10:12:32,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114129131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:32,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:12:32,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:12:32,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187118285] [2022-12-14 10:12:32,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:32,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:12:32,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:32,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:12:32,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:12:32,801 INFO L87 Difference]: Start difference. First operand 42274 states and 167377 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:33,316 INFO L93 Difference]: Finished difference Result 52352 states and 206303 transitions. [2022-12-14 10:12:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:12:33,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-14 10:12:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:33,514 INFO L225 Difference]: With dead ends: 52352 [2022-12-14 10:12:33,514 INFO L226 Difference]: Without dead ends: 50407 [2022-12-14 10:12:33,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:12:33,514 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 146 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:33,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 23 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:12:33,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50407 states. [2022-12-14 10:12:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50407 to 33775. [2022-12-14 10:12:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33775 states, 33775 states have (on average 3.9162694300518135) internal successors, (132272), 33774 states have internal predecessors, (132272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:34,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33775 states to 33775 states and 132272 transitions. [2022-12-14 10:12:34,312 INFO L78 Accepts]: Start accepts. Automaton has 33775 states and 132272 transitions. Word has length 22 [2022-12-14 10:12:34,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:34,312 INFO L495 AbstractCegarLoop]: Abstraction has 33775 states and 132272 transitions. [2022-12-14 10:12:34,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 33775 states and 132272 transitions. [2022-12-14 10:12:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 10:12:34,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:34,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:34,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 10:12:34,322 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:34,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash 846848366, now seen corresponding path program 1 times [2022-12-14 10:12:34,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:34,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049696513] [2022-12-14 10:12:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:34,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:34,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:34,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049696513] [2022-12-14 10:12:34,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049696513] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:12:34,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520292937] [2022-12-14 10:12:34,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:34,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:34,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:34,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:12:34,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:12:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:34,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:12:34,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:34,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:12:34,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520292937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:12:34,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 10:12:34,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2022-12-14 10:12:34,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309243283] [2022-12-14 10:12:34,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:12:34,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:12:34,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:34,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:12:34,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:12:34,510 INFO L87 Difference]: Start difference. First operand 33775 states and 132272 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:35,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:35,085 INFO L93 Difference]: Finished difference Result 43793 states and 171621 transitions. [2022-12-14 10:12:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 10:12:35,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 10:12:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:35,230 INFO L225 Difference]: With dead ends: 43793 [2022-12-14 10:12:35,230 INFO L226 Difference]: Without dead ends: 43793 [2022-12-14 10:12:35,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-12-14 10:12:35,231 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 224 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:35,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 61 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:12:35,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43793 states. [2022-12-14 10:12:35,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43793 to 30297. [2022-12-14 10:12:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30297 states, 30297 states have (on average 3.8910453180182856) internal successors, (117887), 30296 states have internal predecessors, (117887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30297 states to 30297 states and 117887 transitions. [2022-12-14 10:12:35,922 INFO L78 Accepts]: Start accepts. Automaton has 30297 states and 117887 transitions. Word has length 25 [2022-12-14 10:12:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:35,922 INFO L495 AbstractCegarLoop]: Abstraction has 30297 states and 117887 transitions. [2022-12-14 10:12:35,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:35,922 INFO L276 IsEmpty]: Start isEmpty. Operand 30297 states and 117887 transitions. [2022-12-14 10:12:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 10:12:35,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:35,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:35,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 10:12:36,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:36,135 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:36,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:36,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1083511298, now seen corresponding path program 1 times [2022-12-14 10:12:36,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:36,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088635454] [2022-12-14 10:12:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:36,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:36,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:36,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088635454] [2022-12-14 10:12:36,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088635454] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:12:36,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021659663] [2022-12-14 10:12:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:36,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:36,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:36,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:12:36,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 10:12:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:36,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:12:36,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:36,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:36,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021659663] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:12:36,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [675539998] [2022-12-14 10:12:36,415 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 10:12:36,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:12:36,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 10:12:36,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226088002] [2022-12-14 10:12:36,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:12:36,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 10:12:36,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:36,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 10:12:36,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:12:36,416 INFO L87 Difference]: Start difference. First operand 30297 states and 117887 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:37,176 INFO L93 Difference]: Finished difference Result 65335 states and 254221 transitions. [2022-12-14 10:12:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 10:12:37,177 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-14 10:12:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:37,404 INFO L225 Difference]: With dead ends: 65335 [2022-12-14 10:12:37,404 INFO L226 Difference]: Without dead ends: 65335 [2022-12-14 10:12:37,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2022-12-14 10:12:37,405 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 758 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:37,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 57 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:12:37,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65335 states. [2022-12-14 10:12:38,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65335 to 33314. [2022-12-14 10:12:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33314 states, 33314 states have (on average 3.8977607012066997) internal successors, (129850), 33313 states have internal predecessors, (129850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33314 states to 33314 states and 129850 transitions. [2022-12-14 10:12:38,329 INFO L78 Accepts]: Start accepts. Automaton has 33314 states and 129850 transitions. Word has length 26 [2022-12-14 10:12:38,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:38,329 INFO L495 AbstractCegarLoop]: Abstraction has 33314 states and 129850 transitions. [2022-12-14 10:12:38,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 33314 states and 129850 transitions. [2022-12-14 10:12:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 10:12:38,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:12:38,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:38,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 10:12:38,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:38,543 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-14 10:12:38,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:12:38,544 INFO L85 PathProgramCache]: Analyzing trace with hash -248772362, now seen corresponding path program 1 times [2022-12-14 10:12:38,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:12:38,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232805271] [2022-12-14 10:12:38,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:38,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:12:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:38,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:12:38,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232805271] [2022-12-14 10:12:38,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232805271] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:12:38,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707334765] [2022-12-14 10:12:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:12:38,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:12:38,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:12:38,639 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:12:38,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 10:12:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:12:38,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:12:38,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:12:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:38,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:12:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:12:38,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707334765] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:12:38,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1743286350] [2022-12-14 10:12:38,807 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 10:12:38,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:12:38,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-14 10:12:38,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648585328] [2022-12-14 10:12:38,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:12:38,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 10:12:38,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:12:38,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 10:12:38,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:12:38,809 INFO L87 Difference]: Start difference. First operand 33314 states and 129850 transitions. Second operand has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:40,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:12:40,163 INFO L93 Difference]: Finished difference Result 46860 states and 183434 transitions. [2022-12-14 10:12:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 10:12:40,163 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-14 10:12:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:12:40,164 INFO L225 Difference]: With dead ends: 46860 [2022-12-14 10:12:40,164 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 10:12:40,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=524, Invalid=1282, Unknown=0, NotChecked=0, Total=1806 [2022-12-14 10:12:40,165 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 536 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:12:40,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 133 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 10:12:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 10:12:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 10:12:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 10:12:40,165 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-12-14 10:12:40,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:12:40,166 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 10:12:40,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:12:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 10:12:40,166 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 10:12:40,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2022-12-14 10:12:40,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-14 10:12:40,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-14 10:12:40,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-14 10:12:40,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-14 10:12:40,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-14 10:12:40,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-14 10:12:40,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-14 10:12:40,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 21 remaining) [2022-12-14 10:12:40,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 21 remaining) [2022-12-14 10:12:40,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 21 remaining) [2022-12-14 10:12:40,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location generateErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-14 10:12:40,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location generateErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-14 10:12:40,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-14 10:12:40,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-14 10:12:40,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-14 10:12:40,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-14 10:12:40,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-14 10:12:40,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location processErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-14 10:12:40,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location generateErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-14 10:12:40,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location generateErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-14 10:12:40,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 10:12:40,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 10:12:40,377 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:12:40,386 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 10:12:40,386 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:12:40,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:12:40 BasicIcfg [2022-12-14 10:12:40,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:12:40,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:12:40,388 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:12:40,388 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:12:40,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:12:03" (3/4) ... [2022-12-14 10:12:40,390 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 10:12:40,395 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure process [2022-12-14 10:12:40,395 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure dispose [2022-12-14 10:12:40,395 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure generate [2022-12-14 10:12:40,398 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-12-14 10:12:40,398 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 10:12:40,398 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 10:12:40,398 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 10:12:40,420 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 10:12:40,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:12:40,420 INFO L158 Benchmark]: Toolchain (without parser) took 37684.19ms. Allocated memory was 119.5MB in the beginning and 6.2GB in the end (delta: 6.1GB). Free memory was 88.6MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-12-14 10:12:40,420 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:12:40,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.69ms. Allocated memory is still 119.5MB. Free memory was 88.2MB in the beginning and 58.0MB in the end (delta: 30.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-12-14 10:12:40,421 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.29ms. Allocated memory is still 119.5MB. Free memory was 58.0MB in the beginning and 55.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:12:40,421 INFO L158 Benchmark]: Boogie Preprocessor took 27.59ms. Allocated memory is still 119.5MB. Free memory was 55.2MB in the beginning and 52.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:12:40,421 INFO L158 Benchmark]: RCFGBuilder took 456.15ms. Allocated memory is still 119.5MB. Free memory was 52.7MB in the beginning and 72.7MB in the end (delta: -20.0MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2022-12-14 10:12:40,421 INFO L158 Benchmark]: TraceAbstraction took 36752.74ms. Allocated memory was 119.5MB in the beginning and 6.2GB in the end (delta: 6.1GB). Free memory was 71.9MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-12-14 10:12:40,421 INFO L158 Benchmark]: Witness Printer took 31.89ms. Allocated memory is still 6.2GB. Free memory was 5.1GB in the beginning and 5.1GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 10:12:40,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.69ms. Allocated memory is still 119.5MB. Free memory was 88.2MB in the beginning and 58.0MB in the end (delta: 30.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.29ms. Allocated memory is still 119.5MB. Free memory was 58.0MB in the beginning and 55.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.59ms. Allocated memory is still 119.5MB. Free memory was 55.2MB in the beginning and 52.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 456.15ms. Allocated memory is still 119.5MB. Free memory was 52.7MB in the beginning and 72.7MB in the end (delta: -20.0MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 36752.74ms. Allocated memory was 119.5MB in the beginning and 6.2GB in the end (delta: 6.1GB). Free memory was 71.9MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 31.89ms. Allocated memory is still 6.2GB. Free memory was 5.1GB in the beginning and 5.1GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 175 PlacesBefore, 59 PlacesAfterwards, 177 TransitionsBefore, 55 TransitionsAfterwards, 12642 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 93 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 6 ChoiceCompositions, 152 TotalNumberOfCompositions, 24019 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13433, independent: 13059, independent conditional: 0, independent unconditional: 13059, dependent: 374, dependent conditional: 0, dependent unconditional: 374, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8025, independent: 7929, independent conditional: 0, independent unconditional: 7929, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8025, independent: 7876, independent conditional: 0, independent unconditional: 7876, dependent: 149, dependent conditional: 0, dependent unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 149, independent: 53, independent conditional: 0, independent unconditional: 53, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 250, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13433, independent: 5130, independent conditional: 0, independent unconditional: 5130, dependent: 278, dependent conditional: 0, dependent unconditional: 278, unknown: 8025, unknown conditional: 0, unknown unconditional: 8025] , Statistics on independence cache: Total cache size (in pairs): 624, Positive cache size: 569, Positive conditional cache size: 0, Positive unconditional cache size: 569, Negative cache size: 55, Negative conditional cache size: 0, Negative unconditional cache size: 55, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1170]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1170]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1173]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1173]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1175]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1175]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1205]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1205]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1157]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1157]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 249 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 36.7s, OverallIterations: 23, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3472 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3472 mSDsluCounter, 770 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 500 mSDsCounter, 157 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7428 IncrementalHoareTripleChecker+Invalid, 7585 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 157 mSolverCounterUnsat, 270 mSDtfsCounter, 7428 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 400 GetRequests, 240 SyntacticMatches, 4 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42274occurred in iteration=19, InterpolantAutomatonStates: 177, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.8s AutomataMinimizationTime, 23 MinimizatonAttempts, 144566 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 538 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 599 ConstructedInterpolants, 0 QuantifiedInterpolants, 1559 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1541 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 34 InterpolantComputations, 19 PerfectInterpolantSequences, 37/97 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 10:12:40,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9897af-6388-4856-80c0-f7068e4d42b9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE