./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0 --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 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 --- 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-e04fb08 [2022-11-16 20:11:25,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:11:25,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:11:25,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:11:25,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:11:25,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:11:25,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:11:25,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:11:25,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:11:25,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:11:25,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:11:25,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:11:25,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:11:25,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:11:25,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:11:25,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:11:25,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:11:25,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:11:25,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:11:25,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:11:25,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:11:25,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:11:25,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:11:25,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:11:25,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:11:25,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:11:25,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:11:25,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:11:25,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:11:25,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:11:25,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:11:25,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:11:25,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:11:25,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:11:25,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:11:25,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:11:25,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:11:25,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:11:25,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:11:25,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:11:25,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:11:25,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-16 20:11:25,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:11:25,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:11:25,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:11:25,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:11:25,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:11:25,728 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:11:25,732 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:11:25,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:11:25,733 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:11:25,733 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:11:25,734 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:11:25,734 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:11:25,734 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:11:25,735 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:11:25,735 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:11:25,735 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:11:25,735 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:11:25,736 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:11:25,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:11:25,737 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:11:25,737 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 20:11:25,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:11:25,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:11:25,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:11:25,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:11:25,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:11:25,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:11:25,739 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 20:11:25,739 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:11:25,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:11:25,740 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:11:25,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:11:25,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:11:25,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:11:25,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:11:25,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:11:25,741 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:11:25,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:11:25,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:11:25,743 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:11:25,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:11:25,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:11:25,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:11:25,744 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_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 [2022-11-16 20:11:26,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:11:26,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:11:26,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:11:26,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:11:26,136 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:11:26,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-11-16 20:11:26,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/data/347f30e7d/a2efca56434441a2ae835f2488263b05/FLAG951b97703 [2022-11-16 20:11:26,799 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:11:26,800 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-11-16 20:11:26,821 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/data/347f30e7d/a2efca56434441a2ae835f2488263b05/FLAG951b97703 [2022-11-16 20:11:27,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/data/347f30e7d/a2efca56434441a2ae835f2488263b05 [2022-11-16 20:11:27,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:11:27,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:11:27,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:11:27,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:11:27,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:11:27,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12883b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27, skipping insertion in model container [2022-11-16 20:11:27,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:11:27,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:11:27,753 WARN L229 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_626a35f3-bb7b-4321-9a94-01092a4fdb7d/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-11-16 20:11:27,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:11:27,787 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:11:27,817 WARN L229 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_626a35f3-bb7b-4321-9a94-01092a4fdb7d/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-11-16 20:11:27,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:11:27,878 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:11:27,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27 WrapperNode [2022-11-16 20:11:27,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:11:27,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:11:27,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:11:27,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:11:27,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,943 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 217 [2022-11-16 20:11:27,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:11:27,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:11:27,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:11:27,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:11:27,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,973 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:27,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:11:27,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:11:27,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:11:27,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:11:27,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (1/1) ... [2022-11-16 20:11:28,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:11:28,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:11:28,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:11:28,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:11:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:11:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:11:28,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:11:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:11:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 20:11:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:11:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 20:11:28,080 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 20:11:28,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:11:28,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:11:28,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:11:28,083 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 20:11:28,269 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:11:28,271 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:11:28,715 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:11:28,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:11:28,734 INFO L300 CfgBuilder]: Removed 22 assume(true) statements. [2022-11-16 20:11:28,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:11:28 BoogieIcfgContainer [2022-11-16 20:11:28,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:11:28,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:11:28,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:11:28,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:11:28,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:11:27" (1/3) ... [2022-11-16 20:11:28,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8b993d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:11:28, skipping insertion in model container [2022-11-16 20:11:28,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:11:27" (2/3) ... [2022-11-16 20:11:28,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8b993d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:11:28, skipping insertion in model container [2022-11-16 20:11:28,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:11:28" (3/3) ... [2022-11-16 20:11:28,751 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2022-11-16 20:11:28,764 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 20:11:28,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:11:28,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-16 20:11:28,776 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 20:11:28,892 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 20:11:28,939 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 20:11:28,954 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 236 transitions, 480 flow [2022-11-16 20:11:28,957 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 236 transitions, 480 flow [2022-11-16 20:11:28,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 236 transitions, 480 flow [2022-11-16 20:11:29,101 INFO L130 PetriNetUnfolder]: 43/315 cut-off events. [2022-11-16 20:11:29,101 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 20:11:29,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 315 events. 43/315 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1027 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2022-11-16 20:11:29,121 INFO L119 LiptonReduction]: Number of co-enabled transitions 11570 [2022-11-16 20:11:41,462 INFO L134 LiptonReduction]: Checked pairs total: 26597 [2022-11-16 20:11:41,462 INFO L136 LiptonReduction]: Total number of compositions: 250 [2022-11-16 20:11:41,470 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 84 transitions, 176 flow [2022-11-16 20:11:41,539 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 670 states, 615 states have (on average 3.060162601626016) internal successors, (1882), 669 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:41,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:11:41,561 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;@593832e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:11:41,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-16 20:11:41,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 670 states, 615 states have (on average 3.060162601626016) internal successors, (1882), 669 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:41,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 20:11:41,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:41,571 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 20:11:41,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 20:11:41,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:41,577 INFO L85 PathProgramCache]: Analyzing trace with hash 927, now seen corresponding path program 1 times [2022-11-16 20:11:41,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:41,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421387996] [2022-11-16 20:11:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:41,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:41,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421387996] [2022-11-16 20:11:41,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421387996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:41,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:41,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 20:11:41,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800034615] [2022-11-16 20:11:41,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:41,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:11:41,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:11:41,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:11:41,725 INFO L87 Difference]: Start difference. First operand has 670 states, 615 states have (on average 3.060162601626016) internal successors, (1882), 669 states have internal predecessors, (1882), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:41,866 INFO L93 Difference]: Finished difference Result 666 states and 1306 transitions. [2022-11-16 20:11:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:11:41,869 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-16 20:11:41,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:41,892 INFO L225 Difference]: With dead ends: 666 [2022-11-16 20:11:41,892 INFO L226 Difference]: Without dead ends: 647 [2022-11-16 20:11:41,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:11:41,898 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:41,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:11:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-11-16 20:11:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2022-11-16 20:11:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 598 states have (on average 2.132107023411371) internal successors, (1275), 646 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1275 transitions. [2022-11-16 20:11:42,001 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1275 transitions. Word has length 1 [2022-11-16 20:11:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:42,002 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1275 transitions. [2022-11-16 20:11:42,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1275 transitions. [2022-11-16 20:11:42,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 20:11:42,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:42,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 20:11:42,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:11:42,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 20:11:42,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash 28596367, now seen corresponding path program 1 times [2022-11-16 20:11:42,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:42,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122725480] [2022-11-16 20:11:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:42,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:42,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:42,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122725480] [2022-11-16 20:11:42,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122725480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:42,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:42,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 20:11:42,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111062317] [2022-11-16 20:11:42,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:42,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:11:42,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:42,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:11:42,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:42,341 INFO L87 Difference]: Start difference. First operand 647 states and 1275 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:42,468 INFO L93 Difference]: Finished difference Result 591 states and 1175 transitions. [2022-11-16 20:11:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:11:42,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 20:11:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:42,472 INFO L225 Difference]: With dead ends: 591 [2022-11-16 20:11:42,472 INFO L226 Difference]: Without dead ends: 591 [2022-11-16 20:11:42,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:42,475 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:42,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 16 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:11:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-16 20:11:42,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2022-11-16 20:11:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 556 states have (on average 2.1133093525179856) internal successors, (1175), 590 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1175 transitions. [2022-11-16 20:11:42,514 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1175 transitions. Word has length 4 [2022-11-16 20:11:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:42,515 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 1175 transitions. [2022-11-16 20:11:42,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1175 transitions. [2022-11-16 20:11:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 20:11:42,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:42,516 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-16 20:11:42,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:11:42,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 20:11:42,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:42,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1711331694, now seen corresponding path program 1 times [2022-11-16 20:11:42,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:42,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428005376] [2022-11-16 20:11:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:42,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:11:42,578 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 20:11:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:11:42,626 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 20:11:42,627 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 20:11:42,628 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-16 20:11:42,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-16 20:11:42,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-16 20:11:42,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-16 20:11:42,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-16 20:11:42,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-16 20:11:42,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-16 20:11:42,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-16 20:11:42,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-16 20:11:42,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-16 20:11:42,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-16 20:11:42,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-16 20:11:42,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-16 20:11:42,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-16 20:11:42,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-16 20:11:42,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-16 20:11:42,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-16 20:11:42,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-16 20:11:42,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-16 20:11:42,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-16 20:11:42,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-16 20:11:42,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:11:42,637 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 20:11:42,639 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 20:11:42,640 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 20:11:42,677 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 20:11:42,690 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 20:11:42,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 303 transitions, 624 flow [2022-11-16 20:11:42,691 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 303 transitions, 624 flow [2022-11-16 20:11:42,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 303 transitions, 624 flow [2022-11-16 20:11:42,841 INFO L130 PetriNetUnfolder]: 72/498 cut-off events. [2022-11-16 20:11:42,841 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 20:11:42,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 498 events. 72/498 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1960 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 317. Up to 12 conditions per place. [2022-11-16 20:11:42,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 34060 [2022-11-16 20:11:55,569 INFO L134 LiptonReduction]: Checked pairs total: 73371 [2022-11-16 20:11:55,570 INFO L136 LiptonReduction]: Total number of compositions: 302 [2022-11-16 20:11:55,571 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 118 transitions, 254 flow [2022-11-16 20:11:56,115 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 14103 states, 13808 states have (on average 4.36008111239861) internal successors, (60204), 14102 states have internal predecessors, (60204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:56,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:11:56,118 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;@593832e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:11:56,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-16 20:11:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 14103 states, 13808 states have (on average 4.36008111239861) internal successors, (60204), 14102 states have internal predecessors, (60204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 20:11:56,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:56,163 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 20:11:56,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 20:11:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1599, now seen corresponding path program 1 times [2022-11-16 20:11:56,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:56,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483263746] [2022-11-16 20:11:56,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:56,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:56,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:56,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483263746] [2022-11-16 20:11:56,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483263746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:56,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:56,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 20:11:56,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885534187] [2022-11-16 20:11:56,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:56,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:11:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:56,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:11:56,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:11:56,233 INFO L87 Difference]: Start difference. First operand has 14103 states, 13808 states have (on average 4.36008111239861) internal successors, (60204), 14102 states have internal predecessors, (60204), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:56,597 INFO L93 Difference]: Finished difference Result 14099 states and 41444 transitions. [2022-11-16 20:11:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:11:56,598 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-16 20:11:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:56,720 INFO L225 Difference]: With dead ends: 14099 [2022-11-16 20:11:56,720 INFO L226 Difference]: Without dead ends: 14009 [2022-11-16 20:11:56,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:11:56,723 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:56,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:11:56,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14009 states. [2022-11-16 20:11:57,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14009 to 14009. [2022-11-16 20:11:57,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14009 states, 13722 states have (on average 3.0017490161783997) internal successors, (41190), 14008 states have internal predecessors, (41190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14009 states to 14009 states and 41190 transitions. [2022-11-16 20:11:57,363 INFO L78 Accepts]: Start accepts. Automaton has 14009 states and 41190 transitions. Word has length 1 [2022-11-16 20:11:57,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:57,366 INFO L495 AbstractCegarLoop]: Abstraction has 14009 states and 41190 transitions. [2022-11-16 20:11:57,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:57,367 INFO L276 IsEmpty]: Start isEmpty. Operand 14009 states and 41190 transitions. [2022-11-16 20:11:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 20:11:57,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:57,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 20:11:57,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:11:57,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 20:11:57,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:57,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1527179660, now seen corresponding path program 1 times [2022-11-16 20:11:57,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:57,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332115254] [2022-11-16 20:11:57,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:57,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:57,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:57,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332115254] [2022-11-16 20:11:57,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332115254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:57,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:57,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:11:57,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402807271] [2022-11-16 20:11:57,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:57,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:11:57,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:57,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:11:57,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:57,461 INFO L87 Difference]: Start difference. First operand 14009 states and 41190 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:57,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:57,883 INFO L93 Difference]: Finished difference Result 13535 states and 39813 transitions. [2022-11-16 20:11:57,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:11:57,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 20:11:57,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:57,946 INFO L225 Difference]: With dead ends: 13535 [2022-11-16 20:11:57,947 INFO L226 Difference]: Without dead ends: 13535 [2022-11-16 20:11:57,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:57,948 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:57,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 24 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 20:11:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13535 states. [2022-11-16 20:11:58,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13535 to 13535. [2022-11-16 20:11:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13535 states, 13282 states have (on average 2.9975154344225268) internal successors, (39813), 13534 states have internal predecessors, (39813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13535 states to 13535 states and 39813 transitions. [2022-11-16 20:11:58,563 INFO L78 Accepts]: Start accepts. Automaton has 13535 states and 39813 transitions. Word has length 5 [2022-11-16 20:11:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:58,564 INFO L495 AbstractCegarLoop]: Abstraction has 13535 states and 39813 transitions. [2022-11-16 20:11:58,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:58,564 INFO L276 IsEmpty]: Start isEmpty. Operand 13535 states and 39813 transitions. [2022-11-16 20:11:58,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 20:11:58,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:58,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 20:11:58,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 20:11:58,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 20:11:58,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:58,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1527179744, now seen corresponding path program 1 times [2022-11-16 20:11:58,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:58,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872643988] [2022-11-16 20:11:58,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:58,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:11:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:11:58,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:11:58,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872643988] [2022-11-16 20:11:58,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872643988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:11:58,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:11:58,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 20:11:58,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826974308] [2022-11-16 20:11:58,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:11:58,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:11:58,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:11:58,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:11:58,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:58,792 INFO L87 Difference]: Start difference. First operand 13535 states and 39813 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:59,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:11:59,196 INFO L93 Difference]: Finished difference Result 13514 states and 39771 transitions. [2022-11-16 20:11:59,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:11:59,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 20:11:59,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:11:59,306 INFO L225 Difference]: With dead ends: 13514 [2022-11-16 20:11:59,306 INFO L226 Difference]: Without dead ends: 13514 [2022-11-16 20:11:59,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:11:59,307 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:11:59,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 26 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:11:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13514 states. [2022-11-16 20:11:59,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13514 to 13514. [2022-11-16 20:11:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13514 states, 13266 states have (on average 2.9979647218453187) internal successors, (39771), 13513 states have internal predecessors, (39771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13514 states to 13514 states and 39771 transitions. [2022-11-16 20:11:59,764 INFO L78 Accepts]: Start accepts. Automaton has 13514 states and 39771 transitions. Word has length 5 [2022-11-16 20:11:59,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:11:59,765 INFO L495 AbstractCegarLoop]: Abstraction has 13514 states and 39771 transitions. [2022-11-16 20:11:59,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:11:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand 13514 states and 39771 transitions. [2022-11-16 20:11:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 20:11:59,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:11:59,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:11:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 20:11:59,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 20:11:59,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:11:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash -68943468, now seen corresponding path program 1 times [2022-11-16 20:11:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:11:59,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577482305] [2022-11-16 20:11:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:11:59,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:11:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:00,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:00,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577482305] [2022-11-16 20:12:00,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577482305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:00,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:00,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:12:00,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774240835] [2022-11-16 20:12:00,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:00,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:12:00,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:00,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:12:00,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:12:00,048 INFO L87 Difference]: Start difference. First operand 13514 states and 39771 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:00,419 INFO L93 Difference]: Finished difference Result 15538 states and 44225 transitions. [2022-11-16 20:12:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:12:00,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 20:12:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:00,479 INFO L225 Difference]: With dead ends: 15538 [2022-11-16 20:12:00,479 INFO L226 Difference]: Without dead ends: 15526 [2022-11-16 20:12:00,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:12:00,480 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 99 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:00,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 51 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 20:12:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15526 states. [2022-11-16 20:12:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15526 to 13957. [2022-11-16 20:12:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13957 states, 13729 states have (on average 2.9642362881491735) internal successors, (40696), 13956 states have internal predecessors, (40696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13957 states to 13957 states and 40696 transitions. [2022-11-16 20:12:01,182 INFO L78 Accepts]: Start accepts. Automaton has 13957 states and 40696 transitions. Word has length 8 [2022-11-16 20:12:01,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:01,183 INFO L495 AbstractCegarLoop]: Abstraction has 13957 states and 40696 transitions. [2022-11-16 20:12:01,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:01,183 INFO L276 IsEmpty]: Start isEmpty. Operand 13957 states and 40696 transitions. [2022-11-16 20:12:01,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 20:12:01,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:01,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-16 20:12:01,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 20:12:01,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 20:12:01,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:01,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1247704123, now seen corresponding path program 1 times [2022-11-16 20:12:01,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:01,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917356894] [2022-11-16 20:12:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:01,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:01,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:01,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917356894] [2022-11-16 20:12:01,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917356894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:01,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:01,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:12:01,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105133743] [2022-11-16 20:12:01,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:01,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:01,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:01,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:01,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:01,259 INFO L87 Difference]: Start difference. First operand 13957 states and 40696 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:01,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:01,512 INFO L93 Difference]: Finished difference Result 13527 states and 39419 transitions. [2022-11-16 20:12:01,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:01,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 20:12:01,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:01,568 INFO L225 Difference]: With dead ends: 13527 [2022-11-16 20:12:01,568 INFO L226 Difference]: Without dead ends: 13527 [2022-11-16 20:12:01,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:01,569 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:01,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 13 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:12:01,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13527 states. [2022-11-16 20:12:02,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13527 to 13527. [2022-11-16 20:12:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13527 states, 13320 states have (on average 2.9593843843843843) internal successors, (39419), 13526 states have internal predecessors, (39419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13527 states to 13527 states and 39419 transitions. [2022-11-16 20:12:02,252 INFO L78 Accepts]: Start accepts. Automaton has 13527 states and 39419 transitions. Word has length 9 [2022-11-16 20:12:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:02,253 INFO L495 AbstractCegarLoop]: Abstraction has 13527 states and 39419 transitions. [2022-11-16 20:12:02,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 13527 states and 39419 transitions. [2022-11-16 20:12:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 20:12:02,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:02,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:02,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 20:12:02,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 20:12:02,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:02,262 INFO L85 PathProgramCache]: Analyzing trace with hash 37455293, now seen corresponding path program 1 times [2022-11-16 20:12:02,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:02,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136632561] [2022-11-16 20:12:02,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:02,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:02,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:02,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136632561] [2022-11-16 20:12:02,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136632561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:12:02,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910688178] [2022-11-16 20:12:02,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:02,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:12:02,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:12:02,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:12:02,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:12:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:02,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:12:02,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:12:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:02,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:12:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:02,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910688178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:12:02,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1412507252] [2022-11-16 20:12:02,985 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:336) 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) [2022-11-16 20:12:03,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:12:03,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-16 20:12:03,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978636390] [2022-11-16 20:12:03,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:12:03,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 20:12:03,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:03,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 20:12:03,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:12:03,003 INFO L87 Difference]: Start difference. First operand 13527 states and 39419 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:03,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:03,171 INFO L93 Difference]: Finished difference Result 2237 states and 6122 transitions. [2022-11-16 20:12:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:12:03,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 20:12:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:03,182 INFO L225 Difference]: With dead ends: 2237 [2022-11-16 20:12:03,182 INFO L226 Difference]: Without dead ends: 2237 [2022-11-16 20:12:03,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:12:03,184 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 264 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:03,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 26 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:12:03,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2022-11-16 20:12:03,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2237. [2022-11-16 20:12:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2216 states have (on average 2.762635379061372) internal successors, (6122), 2236 states have internal predecessors, (6122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 6122 transitions. [2022-11-16 20:12:03,232 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 6122 transitions. Word has length 10 [2022-11-16 20:12:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:03,232 INFO L495 AbstractCegarLoop]: Abstraction has 2237 states and 6122 transitions. [2022-11-16 20:12:03,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 6122 transitions. [2022-11-16 20:12:03,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 20:12:03,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:03,236 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 20:12:03,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 20:12:03,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a35f3-bb7b-4321-9a94-01092a4fdb7d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:12:03,441 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 20:12:03,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:03,441 INFO L85 PathProgramCache]: Analyzing trace with hash 747832372, now seen corresponding path program 1 times [2022-11-16 20:12:03,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:03,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29362857] [2022-11-16 20:12:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:03,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:12:03,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 20:12:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:12:03,498 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 20:12:03,498 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 20:12:03,498 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-16 20:12:03,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-16 20:12:03,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-16 20:12:03,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-16 20:12:03,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-16 20:12:03,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-16 20:12:03,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-16 20:12:03,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-16 20:12:03,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-16 20:12:03,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-16 20:12:03,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-16 20:12:03,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-16 20:12:03,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-16 20:12:03,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-16 20:12:03,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-16 20:12:03,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-16 20:12:03,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-16 20:12:03,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-16 20:12:03,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-16 20:12:03,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-16 20:12:03,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-16 20:12:03,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-16 20:12:03,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-16 20:12:03,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-16 20:12:03,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-16 20:12:03,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 20:12:03,504 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:03,506 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 20:12:03,506 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 20:12:03,556 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 20:12:03,561 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 20:12:03,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 322 places, 370 transitions, 770 flow [2022-11-16 20:12:03,562 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 322 places, 370 transitions, 770 flow [2022-11-16 20:12:03,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 370 transitions, 770 flow [2022-11-16 20:12:03,779 INFO L130 PetriNetUnfolder]: 106/722 cut-off events. [2022-11-16 20:12:03,780 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 20:12:03,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 722 events. 106/722 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3161 event pairs, 1 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 506. Up to 16 conditions per place. [2022-11-16 20:12:03,824 INFO L119 LiptonReduction]: Number of co-enabled transitions 64350 [2022-11-16 20:12:17,992 INFO L134 LiptonReduction]: Checked pairs total: 179568 [2022-11-16 20:12:17,992 INFO L136 LiptonReduction]: Total number of compositions: 380 [2022-11-16 20:12:17,993 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 108 places, 150 transitions, 330 flow [2022-11-16 20:12:28,378 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 299577 states, 297992 states have (on average 5.706774007355902) internal successors, (1700573), 299576 states have internal predecessors, (1700573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:28,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:12:28,380 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;@593832e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:12:28,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-16 20:12:28,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 299577 states, 297992 states have (on average 5.706774007355902) internal successors, (1700573), 299576 states have internal predecessors, (1700573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:28,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 20:12:28,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:28,826 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 20:12:28,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 20:12:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:28,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2416, now seen corresponding path program 1 times [2022-11-16 20:12:28,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:28,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316813517] [2022-11-16 20:12:28,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:28,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:28,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:28,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316813517] [2022-11-16 20:12:28,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316813517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:28,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:28,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 20:12:28,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557511907] [2022-11-16 20:12:28,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:28,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:12:28,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:28,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:12:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:12:29,297 INFO L87 Difference]: Start difference. First operand has 299577 states, 297992 states have (on average 5.706774007355902) internal successors, (1700573), 299576 states have internal predecessors, (1700573), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:35,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:35,601 INFO L93 Difference]: Finished difference Result 299573 states and 1176495 transitions. [2022-11-16 20:12:35,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:12:35,601 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-16 20:12:35,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:38,461 INFO L225 Difference]: With dead ends: 299573 [2022-11-16 20:12:38,476 INFO L226 Difference]: Without dead ends: 298835 [2022-11-16 20:12:38,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:12:38,477 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:38,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:12:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298835 states. [2022-11-16 20:12:49,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298835 to 298835. [2022-11-16 20:12:50,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298835 states, 297262 states have (on average 3.9479247263356902) internal successors, (1173568), 298834 states have internal predecessors, (1173568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298835 states to 298835 states and 1173568 transitions. [2022-11-16 20:12:54,395 INFO L78 Accepts]: Start accepts. Automaton has 298835 states and 1173568 transitions. Word has length 1 [2022-11-16 20:12:54,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:54,405 INFO L495 AbstractCegarLoop]: Abstraction has 298835 states and 1173568 transitions. [2022-11-16 20:12:54,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 298835 states and 1173568 transitions. [2022-11-16 20:12:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 20:12:54,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:54,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 20:12:54,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 20:12:54,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-16 20:12:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:54,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1990019128, now seen corresponding path program 1 times [2022-11-16 20:12:54,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:54,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472559689] [2022-11-16 20:12:54,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:54,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:54,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:54,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472559689] [2022-11-16 20:12:54,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472559689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:54,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:54,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:12:54,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121834925] [2022-11-16 20:12:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:54,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:54,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:54,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:54,507 INFO L87 Difference]: Start difference. First operand 298835 states and 1173568 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)