./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 883ae562acbdc0ddaf57b9acda91c94407da87efc745325e9971c16b2e3730c3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:32:01,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:32:01,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:32:01,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:32:01,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:32:01,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:32:01,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:32:01,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:32:01,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:32:01,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:32:01,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:32:01,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:32:01,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:32:01,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:32:01,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:32:01,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:32:01,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:32:01,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:32:01,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:32:01,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:32:01,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:32:01,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:32:01,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:32:01,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:32:01,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:32:01,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:32:01,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:32:01,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:32:01,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:32:01,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:32:01,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:32:01,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:32:01,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:32:01,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:32:01,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:32:01,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:32:01,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:32:01,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:32:01,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:32:01,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:32:01,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:32:01,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:32:01,685 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:32:01,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:32:01,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:32:01,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:32:01,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:32:01,688 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:32:01,688 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:32:01,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:32:01,688 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:32:01,689 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:32:01,690 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:32:01,690 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:32:01,690 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:32:01,690 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:32:01,691 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:32:01,691 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:32:01,691 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:32:01,691 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:32:01,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:32:01,693 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:32:01,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:32:01,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:32:01,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:32:01,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:32:01,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:32:01,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:32:01,694 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:32:01,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:32:01,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:32:01,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:32:01,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:32:01,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:32:01,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:32:01,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:32:01,697 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:32:01,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:32:01,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:32:01,697 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:32:01,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:32:01,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:32:01,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:32:01,698 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_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 883ae562acbdc0ddaf57b9acda91c94407da87efc745325e9971c16b2e3730c3 [2022-11-25 23:32:01,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:32:02,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:32:02,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:32:02,025 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:32:02,025 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:32:02,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-25 23:32:04,981 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:32:05,241 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:32:05,255 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-25 23:32:05,272 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/data/01c24fb86/7729d9305ff340248f59208ca1a073b3/FLAG5207c1688 [2022-11-25 23:32:05,287 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/data/01c24fb86/7729d9305ff340248f59208ca1a073b3 [2022-11-25 23:32:05,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:32:05,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:32:05,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:32:05,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:32:05,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:32:05,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:05,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71090575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05, skipping insertion in model container [2022-11-25 23:32:05,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:05,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:32:05,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:32:05,682 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-11-25 23:32:05,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:32:05,756 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:32:05,824 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-11-25 23:32:05,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:32:05,894 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:32:05,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05 WrapperNode [2022-11-25 23:32:05,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:32:05,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:32:05,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:32:05,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:32:05,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:05,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:05,972 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 556 [2022-11-25 23:32:05,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:32:05,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:32:05,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:32:05,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:32:05,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:05,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:05,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:05,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:05,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:06,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:06,003 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:06,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:06,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:32:06,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:32:06,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:32:06,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:32:06,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (1/1) ... [2022-11-25 23:32:06,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:32:06,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:06,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:32:06,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:32:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:32:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:32:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:32:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:32:06,246 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:32:06,248 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:32:06,996 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:32:07,293 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:32:07,293 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:32:07,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:32:07 BoogieIcfgContainer [2022-11-25 23:32:07,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:32:07,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:32:07,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:32:07,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:32:07,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:32:05" (1/3) ... [2022-11-25 23:32:07,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3b7f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:32:07, skipping insertion in model container [2022-11-25 23:32:07,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:05" (2/3) ... [2022-11-25 23:32:07,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3b7f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:32:07, skipping insertion in model container [2022-11-25 23:32:07,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:32:07" (3/3) ... [2022-11-25 23:32:07,309 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-25 23:32:07,329 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:32:07,330 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:32:07,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:32:07,390 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;@22c0470e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:32:07,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:32:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 100 states have (on average 1.7) internal successors, (170), 101 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:07,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 23:32:07,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:07,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:07,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:07,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1052493791, now seen corresponding path program 1 times [2022-11-25 23:32:07,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:07,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624581994] [2022-11-25 23:32:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:07,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:08,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:08,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624581994] [2022-11-25 23:32:08,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624581994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:08,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:08,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:32:08,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857172158] [2022-11-25 23:32:08,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:08,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:32:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:08,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:32:08,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:32:08,099 INFO L87 Difference]: Start difference. First operand has 102 states, 100 states have (on average 1.7) internal successors, (170), 101 states have internal predecessors, (170), 0 states have call successors, (0), 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 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:08,448 INFO L93 Difference]: Finished difference Result 277 states and 443 transitions. [2022-11-25 23:32:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:32:08,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-25 23:32:08,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:08,471 INFO L225 Difference]: With dead ends: 277 [2022-11-25 23:32:08,471 INFO L226 Difference]: Without dead ends: 207 [2022-11-25 23:32:08,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:32:08,480 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 457 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:08,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 405 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:32:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-25 23:32:08,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2022-11-25 23:32:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.3712871287128714) internal successors, (277), 202 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 277 transitions. [2022-11-25 23:32:08,558 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 277 transitions. Word has length 41 [2022-11-25 23:32:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:08,559 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 277 transitions. [2022-11-25 23:32:08,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 277 transitions. [2022-11-25 23:32:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 23:32:08,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:08,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:08,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:32:08,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:08,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1265682710, now seen corresponding path program 1 times [2022-11-25 23:32:08,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:08,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498160348] [2022-11-25 23:32:08,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:08,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:08,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:08,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498160348] [2022-11-25 23:32:08,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498160348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:08,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:08,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:32:08,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466902227] [2022-11-25 23:32:08,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:08,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:32:08,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:08,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:32:08,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:32:08,791 INFO L87 Difference]: Start difference. First operand 203 states and 277 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:09,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:09,054 INFO L93 Difference]: Finished difference Result 456 states and 638 transitions. [2022-11-25 23:32:09,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:32:09,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-11-25 23:32:09,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:09,056 INFO L225 Difference]: With dead ends: 456 [2022-11-25 23:32:09,057 INFO L226 Difference]: Without dead ends: 291 [2022-11-25 23:32:09,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:32:09,059 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 334 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:09,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 145 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:32:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-25 23:32:09,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2022-11-25 23:32:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.3888888888888888) internal successors, (400), 288 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 400 transitions. [2022-11-25 23:32:09,134 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 400 transitions. Word has length 42 [2022-11-25 23:32:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:09,135 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 400 transitions. [2022-11-25 23:32:09,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 400 transitions. [2022-11-25 23:32:09,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 23:32:09,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:09,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:09,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:32:09,150 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1309281607, now seen corresponding path program 1 times [2022-11-25 23:32:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:09,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595465957] [2022-11-25 23:32:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:09,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:09,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595465957] [2022-11-25 23:32:09,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595465957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:09,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:09,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:32:09,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126892743] [2022-11-25 23:32:09,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:09,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:32:09,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:09,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:32:09,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:32:09,315 INFO L87 Difference]: Start difference. First operand 289 states and 400 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:09,586 INFO L93 Difference]: Finished difference Result 694 states and 986 transitions. [2022-11-25 23:32:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:32:09,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-11-25 23:32:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:09,589 INFO L225 Difference]: With dead ends: 694 [2022-11-25 23:32:09,589 INFO L226 Difference]: Without dead ends: 463 [2022-11-25 23:32:09,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:32:09,600 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 317 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:09,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 153 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:32:09,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-25 23:32:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2022-11-25 23:32:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.4065217391304348) internal successors, (647), 460 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 647 transitions. [2022-11-25 23:32:09,709 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 647 transitions. Word has length 42 [2022-11-25 23:32:09,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:09,710 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 647 transitions. [2022-11-25 23:32:09,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:09,710 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 647 transitions. [2022-11-25 23:32:09,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 23:32:09,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:09,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:09,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:32:09,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:09,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:09,715 INFO L85 PathProgramCache]: Analyzing trace with hash -904346763, now seen corresponding path program 1 times [2022-11-25 23:32:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:09,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094397308] [2022-11-25 23:32:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:09,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:09,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094397308] [2022-11-25 23:32:09,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094397308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:09,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:09,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:32:09,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484794458] [2022-11-25 23:32:09,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:09,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:32:09,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:09,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:32:09,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:32:09,862 INFO L87 Difference]: Start difference. First operand 461 states and 647 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:10,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:10,113 INFO L93 Difference]: Finished difference Result 889 states and 1257 transitions. [2022-11-25 23:32:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:32:10,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-25 23:32:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:10,117 INFO L225 Difference]: With dead ends: 889 [2022-11-25 23:32:10,117 INFO L226 Difference]: Without dead ends: 461 [2022-11-25 23:32:10,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:32:10,128 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 281 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:10,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 117 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:32:10,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-25 23:32:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2022-11-25 23:32:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.4043478260869566) internal successors, (646), 460 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 646 transitions. [2022-11-25 23:32:10,228 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 646 transitions. Word has length 43 [2022-11-25 23:32:10,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:10,230 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 646 transitions. [2022-11-25 23:32:10,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 646 transitions. [2022-11-25 23:32:10,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 23:32:10,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:10,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:10,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:32:10,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:10,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1017642517, now seen corresponding path program 1 times [2022-11-25 23:32:10,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:10,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171560813] [2022-11-25 23:32:10,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:10,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:10,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:10,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171560813] [2022-11-25 23:32:10,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171560813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:10,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:10,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 23:32:10,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149725126] [2022-11-25 23:32:10,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:10,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:32:10,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:10,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:32:10,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:32:10,814 INFO L87 Difference]: Start difference. First operand 461 states and 646 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:11,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:11,701 INFO L93 Difference]: Finished difference Result 1268 states and 1802 transitions. [2022-11-25 23:32:11,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:32:11,702 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-25 23:32:11,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:11,707 INFO L225 Difference]: With dead ends: 1268 [2022-11-25 23:32:11,707 INFO L226 Difference]: Without dead ends: 1069 [2022-11-25 23:32:11,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:32:11,710 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 937 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:11,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 642 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:32:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-11-25 23:32:11,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 714. [2022-11-25 23:32:11,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 713 states have (on average 1.3969144460028051) internal successors, (996), 713 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:11,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 996 transitions. [2022-11-25 23:32:11,877 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 996 transitions. Word has length 43 [2022-11-25 23:32:11,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:11,878 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 996 transitions. [2022-11-25 23:32:11,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 996 transitions. [2022-11-25 23:32:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 23:32:11,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:11,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:11,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:32:11,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:11,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:11,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1736506891, now seen corresponding path program 1 times [2022-11-25 23:32:11,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:11,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215355846] [2022-11-25 23:32:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:11,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:12,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:12,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215355846] [2022-11-25 23:32:12,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215355846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:12,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:12,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 23:32:12,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059983209] [2022-11-25 23:32:12,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:12,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 23:32:12,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:12,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 23:32:12,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:32:12,553 INFO L87 Difference]: Start difference. First operand 714 states and 996 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:13,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:13,788 INFO L93 Difference]: Finished difference Result 1146 states and 1603 transitions. [2022-11-25 23:32:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:32:13,789 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-11-25 23:32:13,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:13,793 INFO L225 Difference]: With dead ends: 1146 [2022-11-25 23:32:13,793 INFO L226 Difference]: Without dead ends: 1077 [2022-11-25 23:32:13,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:32:13,795 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1302 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:13,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 683 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:32:13,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2022-11-25 23:32:13,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 890. [2022-11-25 23:32:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 1.3925759280089989) internal successors, (1238), 889 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1238 transitions. [2022-11-25 23:32:13,986 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1238 transitions. Word has length 43 [2022-11-25 23:32:13,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:13,988 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1238 transitions. [2022-11-25 23:32:13,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:13,989 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1238 transitions. [2022-11-25 23:32:13,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 23:32:13,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:13,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:13,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:32:13,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:13,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 7487323, now seen corresponding path program 1 times [2022-11-25 23:32:13,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:13,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125532191] [2022-11-25 23:32:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:14,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:14,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125532191] [2022-11-25 23:32:14,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125532191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:14,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:14,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 23:32:14,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003947084] [2022-11-25 23:32:14,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:14,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:32:14,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:32:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:32:14,472 INFO L87 Difference]: Start difference. First operand 890 states and 1238 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:15,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:15,332 INFO L93 Difference]: Finished difference Result 1703 states and 2423 transitions. [2022-11-25 23:32:15,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 23:32:15,333 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-11-25 23:32:15,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:15,338 INFO L225 Difference]: With dead ends: 1703 [2022-11-25 23:32:15,338 INFO L226 Difference]: Without dead ends: 1349 [2022-11-25 23:32:15,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-11-25 23:32:15,340 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 693 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:15,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 657 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:32:15,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-11-25 23:32:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1135. [2022-11-25 23:32:15,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 1.3924162257495591) internal successors, (1579), 1134 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1579 transitions. [2022-11-25 23:32:15,637 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1579 transitions. Word has length 44 [2022-11-25 23:32:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:15,637 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 1579 transitions. [2022-11-25 23:32:15,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1579 transitions. [2022-11-25 23:32:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-25 23:32:15,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:15,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:15,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:32:15,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash -905372951, now seen corresponding path program 1 times [2022-11-25 23:32:15,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:15,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393659180] [2022-11-25 23:32:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:15,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:16,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:16,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393659180] [2022-11-25 23:32:16,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393659180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:16,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:16,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 23:32:16,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107904383] [2022-11-25 23:32:16,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:16,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:32:16,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:16,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:32:16,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:32:16,213 INFO L87 Difference]: Start difference. First operand 1135 states and 1579 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:17,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:17,164 INFO L93 Difference]: Finished difference Result 2812 states and 3965 transitions. [2022-11-25 23:32:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:32:17,165 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-25 23:32:17,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:17,175 INFO L225 Difference]: With dead ends: 2812 [2022-11-25 23:32:17,175 INFO L226 Difference]: Without dead ends: 2748 [2022-11-25 23:32:17,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=302, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:32:17,178 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 470 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:17,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 907 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:32:17,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2022-11-25 23:32:17,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1147. [2022-11-25 23:32:17,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 1.388307155322862) internal successors, (1591), 1146 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:17,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1591 transitions. [2022-11-25 23:32:17,410 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1591 transitions. Word has length 45 [2022-11-25 23:32:17,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:17,411 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1591 transitions. [2022-11-25 23:32:17,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:17,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1591 transitions. [2022-11-25 23:32:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 23:32:17,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:17,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:17,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:32:17,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:17,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:17,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1752243919, now seen corresponding path program 1 times [2022-11-25 23:32:17,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:17,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468330355] [2022-11-25 23:32:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:17,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:17,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:17,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468330355] [2022-11-25 23:32:17,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468330355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:17,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:17,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 23:32:17,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093921162] [2022-11-25 23:32:17,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:17,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:32:17,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:17,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:32:17,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:32:17,938 INFO L87 Difference]: Start difference. First operand 1147 states and 1591 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:19,230 INFO L93 Difference]: Finished difference Result 2843 states and 4014 transitions. [2022-11-25 23:32:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:32:19,231 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-11-25 23:32:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:19,245 INFO L225 Difference]: With dead ends: 2843 [2022-11-25 23:32:19,246 INFO L226 Difference]: Without dead ends: 2655 [2022-11-25 23:32:19,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2022-11-25 23:32:19,250 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 369 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:19,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1140 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:32:19,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2022-11-25 23:32:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 1462. [2022-11-25 23:32:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 1.4010951403148528) internal successors, (2047), 1461 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2047 transitions. [2022-11-25 23:32:19,609 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2047 transitions. Word has length 46 [2022-11-25 23:32:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:19,609 INFO L495 AbstractCegarLoop]: Abstraction has 1462 states and 2047 transitions. [2022-11-25 23:32:19,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2047 transitions. [2022-11-25 23:32:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 23:32:19,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:19,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:19,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:32:19,611 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:19,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:19,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1001905489, now seen corresponding path program 1 times [2022-11-25 23:32:19,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:19,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696895356] [2022-11-25 23:32:19,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:19,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:20,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:20,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696895356] [2022-11-25 23:32:20,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696895356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:20,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:20,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 23:32:20,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739935231] [2022-11-25 23:32:20,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:20,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:32:20,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:32:20,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:32:20,078 INFO L87 Difference]: Start difference. First operand 1462 states and 2047 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:21,334 INFO L93 Difference]: Finished difference Result 2576 states and 3625 transitions. [2022-11-25 23:32:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:32:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-11-25 23:32:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:21,343 INFO L225 Difference]: With dead ends: 2576 [2022-11-25 23:32:21,343 INFO L226 Difference]: Without dead ends: 2230 [2022-11-25 23:32:21,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:32:21,348 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 333 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:21,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 892 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:32:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2022-11-25 23:32:21,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 1478. [2022-11-25 23:32:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 1.3981042654028435) internal successors, (2065), 1477 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2065 transitions. [2022-11-25 23:32:21,726 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2065 transitions. Word has length 46 [2022-11-25 23:32:21,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:21,727 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 2065 transitions. [2022-11-25 23:32:21,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2065 transitions. [2022-11-25 23:32:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 23:32:21,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:21,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:21,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:32:21,729 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:21,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:21,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2111794322, now seen corresponding path program 1 times [2022-11-25 23:32:21,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:21,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384558327] [2022-11-25 23:32:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:21,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:21,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:21,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384558327] [2022-11-25 23:32:21,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384558327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:21,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:21,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:32:21,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988880966] [2022-11-25 23:32:21,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:21,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:32:21,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:21,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:32:21,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:21,793 INFO L87 Difference]: Start difference. First operand 1478 states and 2065 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:22,154 INFO L93 Difference]: Finished difference Result 2384 states and 3364 transitions. [2022-11-25 23:32:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:32:22,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-11-25 23:32:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:22,160 INFO L225 Difference]: With dead ends: 2384 [2022-11-25 23:32:22,160 INFO L226 Difference]: Without dead ends: 1234 [2022-11-25 23:32:22,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:22,163 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 68 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:22,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 219 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:32:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-11-25 23:32:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1180. [2022-11-25 23:32:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 1.3918575063613232) internal successors, (1641), 1179 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1641 transitions. [2022-11-25 23:32:22,442 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1641 transitions. Word has length 46 [2022-11-25 23:32:22,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:22,443 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1641 transitions. [2022-11-25 23:32:22,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:22,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1641 transitions. [2022-11-25 23:32:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 23:32:22,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:22,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:22,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:32:22,444 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:22,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash 671937827, now seen corresponding path program 1 times [2022-11-25 23:32:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:22,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090070179] [2022-11-25 23:32:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:22,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:27,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:27,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090070179] [2022-11-25 23:32:27,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090070179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:27,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:27,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-25 23:32:27,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036783116] [2022-11-25 23:32:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:27,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 23:32:27,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:27,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 23:32:27,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2022-11-25 23:32:27,688 INFO L87 Difference]: Start difference. First operand 1180 states and 1641 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:34,098 INFO L93 Difference]: Finished difference Result 2295 states and 3212 transitions. [2022-11-25 23:32:34,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 23:32:34,099 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-11-25 23:32:34,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:34,104 INFO L225 Difference]: With dead ends: 2295 [2022-11-25 23:32:34,105 INFO L226 Difference]: Without dead ends: 1698 [2022-11-25 23:32:34,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2022-11-25 23:32:34,108 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 333 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:34,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1127 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 23:32:34,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-11-25 23:32:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1156. [2022-11-25 23:32:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.3965367965367965) internal successors, (1613), 1155 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1613 transitions. [2022-11-25 23:32:34,412 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1613 transitions. Word has length 48 [2022-11-25 23:32:34,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:34,412 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1613 transitions. [2022-11-25 23:32:34,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:34,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1613 transitions. [2022-11-25 23:32:34,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 23:32:34,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:34,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:34,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 23:32:34,414 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:34,414 INFO L85 PathProgramCache]: Analyzing trace with hash -654315192, now seen corresponding path program 1 times [2022-11-25 23:32:34,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:34,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643158665] [2022-11-25 23:32:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:34,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:34,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:34,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643158665] [2022-11-25 23:32:34,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643158665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:34,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:34,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:32:34,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159347269] [2022-11-25 23:32:34,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:34,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:32:34,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:34,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:32:34,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:34,521 INFO L87 Difference]: Start difference. First operand 1156 states and 1613 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:35,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:35,048 INFO L93 Difference]: Finished difference Result 2856 states and 4040 transitions. [2022-11-25 23:32:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:32:35,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-11-25 23:32:35,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:35,056 INFO L225 Difference]: With dead ends: 2856 [2022-11-25 23:32:35,056 INFO L226 Difference]: Without dead ends: 1947 [2022-11-25 23:32:35,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:35,059 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 63 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:35,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 251 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:32:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2022-11-25 23:32:35,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1756. [2022-11-25 23:32:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1755 states have (on average 1.3874643874643875) internal successors, (2435), 1755 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2435 transitions. [2022-11-25 23:32:35,538 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2435 transitions. Word has length 51 [2022-11-25 23:32:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:35,539 INFO L495 AbstractCegarLoop]: Abstraction has 1756 states and 2435 transitions. [2022-11-25 23:32:35,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:35,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2435 transitions. [2022-11-25 23:32:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:32:35,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:35,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:35,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:32:35,541 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:35,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:35,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1906316078, now seen corresponding path program 1 times [2022-11-25 23:32:35,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:35,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693493376] [2022-11-25 23:32:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:35,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:35,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:35,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693493376] [2022-11-25 23:32:35,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693493376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:35,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:35,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:32:35,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756490066] [2022-11-25 23:32:35,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:35,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:32:35,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:32:35,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:35,651 INFO L87 Difference]: Start difference. First operand 1756 states and 2435 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:36,312 INFO L93 Difference]: Finished difference Result 3935 states and 5515 transitions. [2022-11-25 23:32:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:32:36,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-11-25 23:32:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:36,321 INFO L225 Difference]: With dead ends: 3935 [2022-11-25 23:32:36,321 INFO L226 Difference]: Without dead ends: 2426 [2022-11-25 23:32:36,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:36,328 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 60 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:36,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 234 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:32:36,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2022-11-25 23:32:36,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2120. [2022-11-25 23:32:36,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 2119 states have (on average 1.3756488909863143) internal successors, (2915), 2119 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 2915 transitions. [2022-11-25 23:32:36,913 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 2915 transitions. Word has length 53 [2022-11-25 23:32:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:36,913 INFO L495 AbstractCegarLoop]: Abstraction has 2120 states and 2915 transitions. [2022-11-25 23:32:36,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 2915 transitions. [2022-11-25 23:32:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 23:32:36,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:36,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:36,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:32:36,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:36,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:36,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1268014085, now seen corresponding path program 1 times [2022-11-25 23:32:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:36,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951418609] [2022-11-25 23:32:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:36,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:36,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:36,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951418609] [2022-11-25 23:32:36,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951418609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:36,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:36,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:32:36,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790790425] [2022-11-25 23:32:36,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:36,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:32:36,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:36,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:32:36,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:36,962 INFO L87 Difference]: Start difference. First operand 2120 states and 2915 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:37,406 INFO L93 Difference]: Finished difference Result 3139 states and 4322 transitions. [2022-11-25 23:32:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:32:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-25 23:32:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:37,413 INFO L225 Difference]: With dead ends: 3139 [2022-11-25 23:32:37,413 INFO L226 Difference]: Without dead ends: 2330 [2022-11-25 23:32:37,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:37,415 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 56 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:37,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 236 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:32:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2022-11-25 23:32:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2320. [2022-11-25 23:32:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2320 states, 2319 states have (on average 1.3626563173781803) internal successors, (3160), 2319 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3160 transitions. [2022-11-25 23:32:38,066 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3160 transitions. Word has length 56 [2022-11-25 23:32:38,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:38,066 INFO L495 AbstractCegarLoop]: Abstraction has 2320 states and 3160 transitions. [2022-11-25 23:32:38,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:38,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3160 transitions. [2022-11-25 23:32:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 23:32:38,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:38,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:38,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 23:32:38,068 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash -916329445, now seen corresponding path program 1 times [2022-11-25 23:32:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:38,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724716883] [2022-11-25 23:32:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:38,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:38,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:38,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724716883] [2022-11-25 23:32:38,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724716883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:38,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:38,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:32:38,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701661243] [2022-11-25 23:32:38,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:38,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:32:38,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:38,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:32:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:38,152 INFO L87 Difference]: Start difference. First operand 2320 states and 3160 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:38,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:38,978 INFO L93 Difference]: Finished difference Result 5627 states and 7734 transitions. [2022-11-25 23:32:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:32:38,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-25 23:32:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:38,988 INFO L225 Difference]: With dead ends: 5627 [2022-11-25 23:32:38,988 INFO L226 Difference]: Without dead ends: 3401 [2022-11-25 23:32:38,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:32:38,992 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 55 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:38,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 215 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:32:38,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2022-11-25 23:32:39,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3002. [2022-11-25 23:32:39,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 3001 states have (on average 1.352215928023992) internal successors, (4058), 3001 states have internal predecessors, (4058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 4058 transitions. [2022-11-25 23:32:39,786 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 4058 transitions. Word has length 56 [2022-11-25 23:32:39,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:39,787 INFO L495 AbstractCegarLoop]: Abstraction has 3002 states and 4058 transitions. [2022-11-25 23:32:39,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 4058 transitions. [2022-11-25 23:32:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 23:32:39,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:39,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:39,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 23:32:39,789 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1543796987, now seen corresponding path program 1 times [2022-11-25 23:32:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:39,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554802976] [2022-11-25 23:32:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:40,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:40,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554802976] [2022-11-25 23:32:40,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554802976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:32:40,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:32:40,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:32:40,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852512388] [2022-11-25 23:32:40,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:32:40,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:32:40,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:32:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:32:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:32:40,080 INFO L87 Difference]: Start difference. First operand 3002 states and 4058 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:41,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:32:41,609 INFO L93 Difference]: Finished difference Result 4371 states and 5866 transitions. [2022-11-25 23:32:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:32:41,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-11-25 23:32:41,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:32:41,631 INFO L225 Difference]: With dead ends: 4371 [2022-11-25 23:32:41,631 INFO L226 Difference]: Without dead ends: 4369 [2022-11-25 23:32:41,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:32:41,634 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 258 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:32:41,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 654 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:32:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2022-11-25 23:32:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 3639. [2022-11-25 23:32:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3638 states have (on average 1.351017042330951) internal successors, (4915), 3638 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4915 transitions. [2022-11-25 23:32:42,503 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4915 transitions. Word has length 61 [2022-11-25 23:32:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:32:42,503 INFO L495 AbstractCegarLoop]: Abstraction has 3639 states and 4915 transitions. [2022-11-25 23:32:42,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:32:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4915 transitions. [2022-11-25 23:32:42,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 23:32:42,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:42,505 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:32:42,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 23:32:42,505 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:42,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash -469346510, now seen corresponding path program 1 times [2022-11-25 23:32:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:42,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244469150] [2022-11-25 23:32:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:42,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:32:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:43,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:32:43,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244469150] [2022-11-25 23:32:43,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244469150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:32:43,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995245477] [2022-11-25 23:32:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:43,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:32:43,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:43,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:32:43,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8950228-681c-4f7a-a2a5-8ff47994ec90/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:32:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:32:43,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-25 23:32:43,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:32:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:32:50,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:38:12,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995245477] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:38:12,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [497918414] [2022-11-25 23:38:12,768 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-11-25 23:38:12,768 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:38:12,772 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:38:12,777 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:38:12,778 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:38:12,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:38:12,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:38:12,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-25 23:38:12,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:38:12,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:38:12,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:38:12,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-25 23:38:21,117 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:39:03,872 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '100568#(and (<= (+ |ULTIMATE.start_main_~node2__m2~1#1| 1) 0) (= ~__return_6353~0 0) (or (not (<= (+ ~st3~0 ~st2~0 ~st1~0) 1)) (and (not (= (+ ~st3~0 ~st2~0 ~st1~0) 1)) (not (< (mod ~r1~0 256) 3)))) (<= 0 ~id3~0) (= ~nomsg~0 ~p1_new~0) (<= 0 ~mode1~0) (<= |ULTIMATE.start_main_~assert__arg~0#1| 1) (<= 0 (+ ~p1_old~0 1)) (= (ite (= |ULTIMATE.start_main_~main__c1~0#1| 0) 0 1) |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 0 ~id1~0) (= |ULTIMATE.start_main_~check__tmp~1#1| 1) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~0#1| 1)) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~2#1| 1)) (= ~p2~0 0) (<= 1 ~r1~0) (<= |ULTIMATE.start_main_~node2____CPAchecker_TMP_0~0#1| 127) (= |ULTIMATE.start_main_~main__c1~0#1| ~__return_6183~0) (<= 0 ~mode3~0) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (= |ULTIMATE.start_main_~check__tmp~0#1| 1) (<= ~send1~0 127) (<= ~st1~0 0) (= ~p3_new~0 ~nomsg~0) (<= ~__return_6056~0 1) (<= 0 (+ ~p3_old~0 1)) (= (mod |ULTIMATE.start_main_~assert__arg~2#1| 256) 0) (<= 1 ~__return_6056~0) (<= ~mode2~0 1) (<= 0 ~st1~0) (<= ~r1~0 257) (<= 0 ~st2~0) (<= ~mode3~0 1) (<= 0 ~send2~0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (<= ~id1~0 127) (<= (+ ~p3_old~0 1) 0) (= ~nomsg~0 ~p2_new~0) (<= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (<= ~__return_6117~0 1) (<= ~send2~0 127) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~2#1| 1)) (= |ULTIMATE.start_main_~init__tmp~0#1| 1) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1|) (= |ULTIMATE.start_main_~check__tmp~2#1| ~__return_6183~0) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (<= (+ ~nomsg~0 1) 0) (<= ~mode1~0 1) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~1#1| 1)) (<= ~st2~0 0) (<= (+ |ULTIMATE.start_main_~node1__m1~2#1| 1) 0) (<= 0 |ULTIMATE.start_main_~node2____CPAchecker_TMP_0~0#1|) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (<= ~id3~0 127) (<= 0 ~id2~0) (= |#NULL.offset| 0) (<= 0 (+ ~nomsg~0 1)) (<= (+ |ULTIMATE.start_main_~node2__m2~2#1| 1) 0) (<= 0 ~mode2~0) (<= (+ |ULTIMATE.start_main_~node1__m1~1#1| 1) 0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (<= 0 ~st3~0) (= |ULTIMATE.start_main_~assert__arg~2#1| |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~0#1| 1)) (= ~p3~0 0) (<= (+ ~p1_old~0 1) 0) (<= 1 ~__return_6117~0) (= ~p1~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 ~send1~0) (<= (+ |ULTIMATE.start_main_~node2__m2~0#1| 1) 0) (= ~__return_main~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~1#1| 1)) (<= ~__return_5979~0 1) (<= (+ |ULTIMATE.start_main_~node3__m3~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~assert__arg~0#1|) (<= 1 ~__return_5979~0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|) (= |ULTIMATE.start_main_~main__i2~0#1| 0))' at error location [2022-11-25 23:39:03,873 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:39:03,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:39:03,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 27, 27] total 64 [2022-11-25 23:39:03,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692286881] [2022-11-25 23:39:03,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:39:03,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-25 23:39:03,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:39:03,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-25 23:39:03,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1840, Invalid=11042, Unknown=0, NotChecked=0, Total=12882 [2022-11-25 23:39:03,881 INFO L87 Difference]: Start difference. First operand 3639 states and 4915 transitions. Second operand has 64 states, 64 states have (on average 3.1875) internal successors, (204), 64 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:40:02,438 WARN L233 SmtUtils]: Spent 12.84s on a formula simplification. DAG size of input: 554 DAG size of output: 454 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:12,305 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 334 DAG size of output: 296 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:30,596 WARN L233 SmtUtils]: Spent 16.38s on a formula simplification. DAG size of input: 684 DAG size of output: 569 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:40,851 WARN L233 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 465 DAG size of output: 392 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:54,764 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 550 DAG size of output: 477 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:41:04,872 WARN L233 SmtUtils]: Spent 9.54s on a formula simplification. DAG size of input: 783 DAG size of output: 712 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:41:11,486 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 1095 DAG size of output: 239 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:41:26,042 WARN L233 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 509 DAG size of output: 501 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:41:36,043 WARN L233 SmtUtils]: Spent 9.31s on a formula simplification. DAG size of input: 611 DAG size of output: 599 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:41:54,184 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 552 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:42:06,172 WARN L233 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 481 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:42:14,374 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 336 DAG size of output: 298 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:42:26,496 WARN L233 SmtUtils]: Spent 8.89s on a formula simplification. DAG size of input: 521 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:42:49,125 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 1097 DAG size of output: 241 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:43:11,926 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 398 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:43:29,197 WARN L233 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 521 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:44:05,563 WARN L233 SmtUtils]: Spent 25.74s on a formula simplification. DAG size of input: 1054 DAG size of output: 890 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:44:41,393 WARN L233 SmtUtils]: Spent 23.73s on a formula simplification. DAG size of input: 1019 DAG size of output: 869 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:45:32,630 WARN L233 SmtUtils]: Spent 26.76s on a formula simplification. DAG size of input: 1054 DAG size of output: 904 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:45:45,345 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 481 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)