./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS --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 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --- 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-8393723 [2022-11-19 08:12:03,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:12:03,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:12:03,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:12:03,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:12:03,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:12:03,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:12:03,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:12:03,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:12:03,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:12:03,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:12:03,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:12:03,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:12:04,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:12:04,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:12:04,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:12:04,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:12:04,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:12:04,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:12:04,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:12:04,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:12:04,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:12:04,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:12:04,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:12:04,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:12:04,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:12:04,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:12:04,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:12:04,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:12:04,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:12:04,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:12:04,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:12:04,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:12:04,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:12:04,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:12:04,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:12:04,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:12:04,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:12:04,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:12:04,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:12:04,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:12:04,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:12:04,113 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:12:04,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:12:04,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:12:04,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:12:04,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:12:04,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:12:04,116 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:12:04,116 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:12:04,117 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:12:04,117 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:12:04,118 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:12:04,119 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:12:04,119 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:12:04,119 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:12:04,119 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:12:04,120 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:12:04,120 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:12:04,120 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:12:04,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:12:04,122 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:12:04,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:12:04,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:12:04,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:12:04,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:12:04,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:12:04,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:12:04,124 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:12:04,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:12:04,126 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:12:04,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:12:04,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:12:04,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:12:04,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:12:04,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:12:04,130 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:12:04,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:12:04,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:12:04,131 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:12:04,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:12:04,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:12:04,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:12:04,132 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_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 [2022-11-19 08:12:04,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:12:04,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:12:04,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:12:04,552 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:12:04,553 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:12:04,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-19 08:12:04,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/data/df0b919e8/fe9b4829ced14dd0b1154a41b9caf471/FLAGaa215a06f [2022-11-19 08:12:05,265 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:12:05,265 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2022-11-19 08:12:05,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/data/df0b919e8/fe9b4829ced14dd0b1154a41b9caf471/FLAGaa215a06f [2022-11-19 08:12:05,609 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/data/df0b919e8/fe9b4829ced14dd0b1154a41b9caf471 [2022-11-19 08:12:05,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:12:05,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:12:05,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:12:05,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:12:05,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:12:05,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:12:05" (1/1) ... [2022-11-19 08:12:05,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8846836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:05, skipping insertion in model container [2022-11-19 08:12:05,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:12:05" (1/1) ... [2022-11-19 08:12:05,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:12:05,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:12:05,950 WARN L234 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_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-19 08:12:05,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:12:05,970 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:12:06,006 WARN L234 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_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-11-19 08:12:06,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:12:06,029 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:12:06,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06 WrapperNode [2022-11-19 08:12:06,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:12:06,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:12:06,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:12:06,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:12:06,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (1/1) ... [2022-11-19 08:12:06,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (1/1) ... [2022-11-19 08:12:06,088 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 186 [2022-11-19 08:12:06,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:12:06,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:12:06,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:12:06,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:12:06,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (1/1) ... [2022-11-19 08:12:06,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (1/1) ... [2022-11-19 08:12:06,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (1/1) ... [2022-11-19 08:12:06,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (1/1) ... [2022-11-19 08:12:06,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (1/1) ... [2022-11-19 08:12:06,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (1/1) ... [2022-11-19 08:12:06,124 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (1/1) ... [2022-11-19 08:12:06,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (1/1) ... [2022-11-19 08:12:06,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:12:06,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:12:06,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:12:06,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:12:06,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (1/1) ... [2022-11-19 08:12:06,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:12:06,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:06,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:12:06,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:12:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:12:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:12:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:12:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:12:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:12:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:12:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-19 08:12:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-19 08:12:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-19 08:12:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-19 08:12:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:12:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:12:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:12:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:12:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:12:06,224 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 08:12:06,355 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:12:06,357 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:12:07,016 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:12:07,028 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:12:07,034 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-19 08:12:07,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:12:07 BoogieIcfgContainer [2022-11-19 08:12:07,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:12:07,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:12:07,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:12:07,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:12:07,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:12:05" (1/3) ... [2022-11-19 08:12:07,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11553933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:12:07, skipping insertion in model container [2022-11-19 08:12:07,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:06" (2/3) ... [2022-11-19 08:12:07,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11553933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:12:07, skipping insertion in model container [2022-11-19 08:12:07,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:12:07" (3/3) ... [2022-11-19 08:12:07,051 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2022-11-19 08:12:07,061 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 08:12:07,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:12:07,076 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:12:07,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 08:12:07,204 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-19 08:12:07,278 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:12:07,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 279 transitions, 574 flow [2022-11-19 08:12:07,298 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 279 transitions, 574 flow [2022-11-19 08:12:07,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 279 transitions, 574 flow [2022-11-19 08:12:07,474 INFO L130 PetriNetUnfolder]: 26/277 cut-off events. [2022-11-19 08:12:07,475 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-19 08:12:07,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 277 events. 26/277 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 267 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 211. Up to 2 conditions per place. [2022-11-19 08:12:07,490 INFO L119 LiptonReduction]: Number of co-enabled transitions 972 [2022-11-19 08:12:33,677 INFO L134 LiptonReduction]: Checked pairs total: 1618 [2022-11-19 08:12:33,677 INFO L136 LiptonReduction]: Total number of compositions: 317 [2022-11-19 08:12:33,685 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 31 transitions, 78 flow [2022-11-19 08:12:33,706 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 76 states, 75 states have (on average 2.4266666666666667) internal successors, (182), 75 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:33,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:12:33,730 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;@2ad9cd72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:12:33,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 08:12:33,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 75 states have (on average 2.4266666666666667) internal successors, (182), 75 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 08:12:33,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:33,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:33,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 08:12:33,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:33,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1448009385, now seen corresponding path program 1 times [2022-11-19 08:12:33,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:33,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548571925] [2022-11-19 08:12:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:33,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:33,863 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:12:33,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030801814] [2022-11-19 08:12:33,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:33,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:33,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:33,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:33,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:12:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:34,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:12:34,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:12:34,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:12:34,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:34,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548571925] [2022-11-19 08:12:34,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:12:34,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030801814] [2022-11-19 08:12:34,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030801814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:34,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:34,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:34,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485012690] [2022-11-19 08:12:34,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:34,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:12:34,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:34,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:12:34,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:12:34,179 INFO L87 Difference]: Start difference. First operand has 76 states, 75 states have (on average 2.4266666666666667) internal successors, (182), 75 states have internal predecessors, (182), 0 states have call successors, (0), 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 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:34,381 INFO L93 Difference]: Finished difference Result 148 states and 358 transitions. [2022-11-19 08:12:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:12:34,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-19 08:12:34,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:34,397 INFO L225 Difference]: With dead ends: 148 [2022-11-19 08:12:34,397 INFO L226 Difference]: Without dead ends: 78 [2022-11-19 08:12:34,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:12:34,404 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:34,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 9 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:12:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-19 08:12:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2022-11-19 08:12:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 2.4078947368421053) internal successors, (183), 76 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 183 transitions. [2022-11-19 08:12:34,468 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 183 transitions. Word has length 16 [2022-11-19 08:12:34,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:34,469 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 183 transitions. [2022-11-19 08:12:34,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 183 transitions. [2022-11-19 08:12:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 08:12:34,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:34,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:34,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:12:34,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 08:12:34,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 08:12:34,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash -118471267, now seen corresponding path program 1 times [2022-11-19 08:12:34,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:34,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126080586] [2022-11-19 08:12:34,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:34,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:34,698 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:12:34,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747592161] [2022-11-19 08:12:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:34,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:34,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:34,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:34,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:12:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:34,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:12:34,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:12:34,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:12:34,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:34,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126080586] [2022-11-19 08:12:34,996 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:12:34,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747592161] [2022-11-19 08:12:34,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747592161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:12:34,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [905942104] [2022-11-19 08:12:35,003 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:12:35,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:12:35,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-11-19 08:12:35,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568900887] [2022-11-19 08:12:35,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:12:35,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:12:35,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:35,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:12:35,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:12:35,012 INFO L87 Difference]: Start difference. First operand 77 states and 183 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:35,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:35,245 INFO L93 Difference]: Finished difference Result 117 states and 289 transitions. [2022-11-19 08:12:35,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:12:35,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 08:12:35,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:35,248 INFO L225 Difference]: With dead ends: 117 [2022-11-19 08:12:35,248 INFO L226 Difference]: Without dead ends: 117 [2022-11-19 08:12:35,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:12:35,251 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 61 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:35,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 6 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:12:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-19 08:12:35,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 87. [2022-11-19 08:12:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.4069767441860463) internal successors, (207), 86 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:35,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 207 transitions. [2022-11-19 08:12:35,265 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 207 transitions. Word has length 18 [2022-11-19 08:12:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:35,265 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 207 transitions. [2022-11-19 08:12:35,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 207 transitions. [2022-11-19 08:12:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 08:12:35,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:35,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:35,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 08:12:35,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:35,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 08:12:35,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:35,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1972260189, now seen corresponding path program 1 times [2022-11-19 08:12:35,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:35,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320405483] [2022-11-19 08:12:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:35,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:35,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:12:35,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121794719] [2022-11-19 08:12:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:35,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:35,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:35,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:35,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:12:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:35,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:12:35,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:12:35,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:12:35,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:35,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320405483] [2022-11-19 08:12:35,700 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:12:35,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121794719] [2022-11-19 08:12:35,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121794719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:35,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:35,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:35,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178770433] [2022-11-19 08:12:35,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:35,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:12:35,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:35,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:12:35,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:12:35,706 INFO L87 Difference]: Start difference. First operand 87 states and 207 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:35,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:35,916 INFO L93 Difference]: Finished difference Result 252 states and 609 transitions. [2022-11-19 08:12:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:12:35,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-19 08:12:35,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:35,918 INFO L225 Difference]: With dead ends: 252 [2022-11-19 08:12:35,918 INFO L226 Difference]: Without dead ends: 88 [2022-11-19 08:12:35,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:12:35,919 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 35 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:35,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 8 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:12:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-19 08:12:35,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-19 08:12:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3908045977011496) internal successors, (208), 87 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 208 transitions. [2022-11-19 08:12:35,935 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 208 transitions. Word has length 20 [2022-11-19 08:12:35,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:35,936 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 208 transitions. [2022-11-19 08:12:35,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:35,936 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 208 transitions. [2022-11-19 08:12:35,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 08:12:35,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:35,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:35,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:12:36,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:36,147 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 08:12:36,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:36,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1669764023, now seen corresponding path program 1 times [2022-11-19 08:12:36,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:36,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681009210] [2022-11-19 08:12:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:36,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:36,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:12:36,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321280489] [2022-11-19 08:12:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:36,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:36,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:36,196 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:36,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:12:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:36,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:12:36,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:12:36,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:12:36,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681009210] [2022-11-19 08:12:36,449 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:12:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321280489] [2022-11-19 08:12:36,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321280489] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:12:36,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:12:36,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-19 08:12:36,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791447632] [2022-11-19 08:12:36,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:36,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:12:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:12:36,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:12:36,452 INFO L87 Difference]: Start difference. First operand 88 states and 208 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:36,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:36,720 INFO L93 Difference]: Finished difference Result 102 states and 238 transitions. [2022-11-19 08:12:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:12:36,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-19 08:12:36,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:36,722 INFO L225 Difference]: With dead ends: 102 [2022-11-19 08:12:36,722 INFO L226 Difference]: Without dead ends: 102 [2022-11-19 08:12:36,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:12:36,723 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 48 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:36,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 5 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:12:36,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-19 08:12:36,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2022-11-19 08:12:36,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.3917525773195876) internal successors, (232), 97 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:36,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 232 transitions. [2022-11-19 08:12:36,740 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 232 transitions. Word has length 21 [2022-11-19 08:12:36,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:36,741 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 232 transitions. [2022-11-19 08:12:36,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:36,742 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 232 transitions. [2022-11-19 08:12:36,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 08:12:36,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:36,746 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] [2022-11-19 08:12:36,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 08:12:36,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:36,952 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 08:12:36,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash -676346323, now seen corresponding path program 1 times [2022-11-19 08:12:36,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:36,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821279296] [2022-11-19 08:12:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:36,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:36,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:12:36,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834019516] [2022-11-19 08:12:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:36,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:36,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:36,980 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:37,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:12:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:37,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 08:12:37,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:12:37,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:12:37,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:37,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821279296] [2022-11-19 08:12:37,558 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:12:37,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834019516] [2022-11-19 08:12:37,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834019516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:37,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:37,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:12:37,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564247079] [2022-11-19 08:12:37,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:37,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:12:37,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:37,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:12:37,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:12:37,561 INFO L87 Difference]: Start difference. First operand 98 states and 232 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:38,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:38,274 INFO L93 Difference]: Finished difference Result 104 states and 240 transitions. [2022-11-19 08:12:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:12:38,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-19 08:12:38,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:38,276 INFO L225 Difference]: With dead ends: 104 [2022-11-19 08:12:38,276 INFO L226 Difference]: Without dead ends: 99 [2022-11-19 08:12:38,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:12:38,277 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:38,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 29 Unchecked, 0.6s Time] [2022-11-19 08:12:38,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-19 08:12:38,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-19 08:12:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.377551020408163) internal successors, (233), 98 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 233 transitions. [2022-11-19 08:12:38,285 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 233 transitions. Word has length 24 [2022-11-19 08:12:38,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:38,286 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 233 transitions. [2022-11-19 08:12:38,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:38,286 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 233 transitions. [2022-11-19 08:12:38,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 08:12:38,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:38,287 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] [2022-11-19 08:12:38,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:12:38,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:38,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 08:12:38,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:38,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1035349802, now seen corresponding path program 1 times [2022-11-19 08:12:38,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:38,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851785856] [2022-11-19 08:12:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:38,507 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:12:38,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84066232] [2022-11-19 08:12:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:38,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:38,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:38,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:38,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:12:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:38,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:12:38,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:12:38,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:12:38,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:38,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851785856] [2022-11-19 08:12:38,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:12:38,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84066232] [2022-11-19 08:12:38,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84066232] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:12:38,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:12:38,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-19 08:12:38,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003772014] [2022-11-19 08:12:38,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:38,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:12:38,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:38,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:12:38,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:12:38,781 INFO L87 Difference]: Start difference. First operand 99 states and 233 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:38,871 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2022-11-19 08:12:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:12:38,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-19 08:12:38,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:38,872 INFO L225 Difference]: With dead ends: 100 [2022-11-19 08:12:38,873 INFO L226 Difference]: Without dead ends: 100 [2022-11-19 08:12:38,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:12:38,874 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 53 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:38,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 6 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:12:38,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-19 08:12:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-19 08:12:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.3636363636363638) internal successors, (234), 99 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 234 transitions. [2022-11-19 08:12:38,881 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 234 transitions. Word has length 25 [2022-11-19 08:12:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:38,881 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 234 transitions. [2022-11-19 08:12:38,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 234 transitions. [2022-11-19 08:12:38,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 08:12:38,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:38,882 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] [2022-11-19 08:12:38,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:12:39,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 08:12:39,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 08:12:39,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:39,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1838047946, now seen corresponding path program 1 times [2022-11-19 08:12:39,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:39,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061194911] [2022-11-19 08:12:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:39,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:39,115 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:12:39,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259178397] [2022-11-19 08:12:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:39,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:39,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:39,117 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:39,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:12:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:39,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:12:39,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 08:12:39,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 08:12:39,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:39,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061194911] [2022-11-19 08:12:39,408 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:12:39,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259178397] [2022-11-19 08:12:39,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259178397] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:12:39,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:12:39,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-19 08:12:39,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505626412] [2022-11-19 08:12:39,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:39,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:12:39,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:39,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:12:39,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:12:39,410 INFO L87 Difference]: Start difference. First operand 100 states and 234 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:39,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:39,504 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2022-11-19 08:12:39,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:12:39,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-19 08:12:39,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:39,506 INFO L225 Difference]: With dead ends: 118 [2022-11-19 08:12:39,506 INFO L226 Difference]: Without dead ends: 118 [2022-11-19 08:12:39,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:12:39,507 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 56 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:39,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 7 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:12:39,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-19 08:12:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-11-19 08:12:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.393162393162393) internal successors, (280), 117 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 280 transitions. [2022-11-19 08:12:39,522 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 280 transitions. Word has length 26 [2022-11-19 08:12:39,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:39,523 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 280 transitions. [2022-11-19 08:12:39,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 280 transitions. [2022-11-19 08:12:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 08:12:39,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:39,524 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] [2022-11-19 08:12:39,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:12:39,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 08:12:39,725 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 08:12:39,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:39,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1352895436, now seen corresponding path program 1 times [2022-11-19 08:12:39,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:39,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447510183] [2022-11-19 08:12:39,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:39,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:39,746 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:12:39,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856637072] [2022-11-19 08:12:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:39,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:39,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:39,748 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:39,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 08:12:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:40,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-19 08:12:40,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:40,128 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-19 08:12:40,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 16 [2022-11-19 08:12:40,219 INFO L321 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2022-11-19 08:12:40,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 27 treesize of output 45 [2022-11-19 08:12:40,366 INFO L321 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2022-11-19 08:12:40,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 57 [2022-11-19 08:12:40,549 INFO L321 Elim1Store]: treesize reduction 44, result has 32.3 percent of original size [2022-11-19 08:12:40,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 39 [2022-11-19 08:12:40,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 08:12:40,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2022-11-19 08:12:41,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2022-11-19 08:12:41,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-11-19 08:12:41,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2022-11-19 08:12:42,094 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 08:12:42,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 65 [2022-11-19 08:12:42,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-19 08:12:42,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-19 08:12:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:12:42,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:45,613 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:12:45,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 322 treesize of output 294 [2022-11-19 08:12:45,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 137 [2022-11-19 08:12:46,263 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* c_thread2Thread1of1ForFork0_~i~1 4))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) (+ .cse7 c_~B~0.offset)))) (let ((.cse8 (= .cse1 c_~B~0.base)) (.cse5 (* c_thread2Thread1of1ForFork0_~j~0 4))) (let ((.cse4 (select |c_#memory_int| .cse1)) (.cse6 (select (select |c_#memory_int| c_~F~0.base) (+ .cse5 c_~F~0.offset (* (* c_thread2Thread1of1ForFork0_~i~1 c_~M~0) 4)))) (.cse11 (not .cse8))) (and (or (forall ((v_arrayElimCell_25 Int) (v_arrayElimCell_24 Int) (v_ArrVal_709 (Array Int Int)) (v_~a~0_60 Int) (v_~b~0_62 Int)) (let ((.cse2 (* v_~a~0_60 4))) (or (< v_~a~0_60 0) (< v_~b~0_62 0) (let ((.cse0 (store |c_#memory_int| .cse1 (store .cse4 (+ .cse5 v_arrayElimCell_25) .cse6))) (.cse3 (* v_~b~0_62 4))) (= (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_709) c_~B~0.base) (+ .cse2 c_~B~0.offset))) (+ .cse3 v_arrayElimCell_24)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse3 (* (* v_~a~0_60 c_~M~0) 4))))) (<= c_~N~0 v_~a~0_60) (<= c_~M~0 v_~b~0_62) (= .cse7 .cse2)))) .cse8) (or (forall ((v_arrayElimCell_24 Int) (v_ArrVal_709 (Array Int Int)) (v_arrayElimCell_26 Int) (v_~a~0_60 Int) (v_~b~0_62 Int)) (or (< v_~a~0_60 0) (< v_~b~0_62 0) (<= c_~N~0 v_~a~0_60) (let ((.cse9 (store |c_#memory_int| .cse1 (store .cse4 (+ .cse5 v_arrayElimCell_24) .cse6))) (.cse10 (* v_~b~0_62 4))) (= (select (select .cse9 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_709) c_~B~0.base) (+ (* v_~a~0_60 4) c_~B~0.offset))) (+ .cse10 v_arrayElimCell_26)) (select (select .cse9 c_~A~0.base) (+ c_~A~0.offset .cse10 (* (* v_~a~0_60 c_~M~0) 4))))) (<= c_~M~0 v_~b~0_62))) .cse11) (forall ((v_~b~0_62 Int)) (or (forall ((v_~a~0_60 Int)) (let ((.cse16 (* v_~a~0_60 4))) (or (< v_~a~0_60 0) (forall ((v_arrayElimCell_25 Int) (v_arrayElimCell_24 Int) (v_ArrVal_709 (Array Int Int))) (let ((.cse13 (* v_~b~0_62 4)) (.cse15 (store |c_#memory_int| .cse1 (store .cse4 (+ .cse5 v_arrayElimCell_25) .cse6)))) (let ((.cse12 (select .cse15 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_709) c_~B~0.base) (+ .cse16 c_~B~0.offset)))) (.cse14 (select (select .cse15 c_~A~0.base) (+ c_~A~0.offset .cse13 (* (* v_~a~0_60 c_~M~0) 4))))) (or (forall ((v_arrayElimCell_26 Int)) (= (select .cse12 (+ .cse13 v_arrayElimCell_26)) .cse14)) (= (select .cse12 (+ .cse13 v_arrayElimCell_24)) .cse14))))) (<= c_~N~0 v_~a~0_60) (= .cse7 .cse16)))) (< v_~b~0_62 0) (<= c_~M~0 v_~b~0_62))) (or (forall ((v_arrayElimCell_24 Int) (v_ArrVal_709 (Array Int Int)) (v_~a~0_60 Int) (v_~b~0_62 Int)) (or (< v_~a~0_60 0) (let ((.cse17 (store |c_#memory_int| .cse1 (store .cse4 (+ .cse5 v_arrayElimCell_24) .cse6))) (.cse18 (* v_~b~0_62 4))) (= (select (select .cse17 c_~A~0.base) (+ c_~A~0.offset .cse18 (* (* v_~a~0_60 c_~M~0) 4))) (select (select .cse17 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_709) c_~B~0.base) (+ (* v_~a~0_60 4) c_~B~0.offset))) (+ .cse18 v_arrayElimCell_24)))) (< v_~b~0_62 0) (<= c_~N~0 v_~a~0_60) (<= c_~M~0 v_~b~0_62))) .cse8) (forall ((v_~b~0_62 Int)) (or (< v_~b~0_62 0) (forall ((v_~a~0_60 Int)) (or (forall ((v_arrayElimCell_24 Int) (v_ArrVal_709 (Array Int Int))) (let ((.cse21 (* v_~b~0_62 4)) (.cse22 (store |c_#memory_int| .cse1 (store .cse4 (+ .cse5 v_arrayElimCell_24) .cse6)))) (let ((.cse20 (select .cse22 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_709) c_~B~0.base) (+ (* v_~a~0_60 4) c_~B~0.offset)))) (.cse19 (select (select .cse22 c_~A~0.base) (+ c_~A~0.offset .cse21 (* (* v_~a~0_60 c_~M~0) 4))))) (or (= .cse19 (select .cse20 (+ .cse21 v_arrayElimCell_24))) (forall ((v_arrayElimCell_26 Int)) (= (select .cse20 (+ .cse21 v_arrayElimCell_26)) .cse19)))))) (< v_~a~0_60 0) (<= c_~N~0 v_~a~0_60))) (<= c_~M~0 v_~b~0_62))) (or (forall ((v_arrayElimCell_25 Int) (v_ArrVal_709 (Array Int Int)) (v_arrayElimCell_26 Int) (v_~a~0_60 Int) (v_~b~0_62 Int)) (let ((.cse24 (* v_~a~0_60 4))) (or (< v_~a~0_60 0) (let ((.cse23 (store |c_#memory_int| .cse1 (store .cse4 (+ .cse5 v_arrayElimCell_25) .cse6))) (.cse25 (* v_~b~0_62 4))) (= (select (select .cse23 (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_709) c_~B~0.base) (+ .cse24 c_~B~0.offset))) (+ .cse25 v_arrayElimCell_26)) (select (select .cse23 c_~A~0.base) (+ c_~A~0.offset .cse25 (* (* v_~a~0_60 c_~M~0) 4))))) (< v_~b~0_62 0) (<= c_~N~0 v_~a~0_60) (<= c_~M~0 v_~b~0_62) (= .cse7 .cse24)))) .cse11)))))) is different from false [2022-11-19 08:13:34,464 WARN L233 SmtUtils]: Spent 42.58s on a formula simplification. DAG size of input: 92 DAG size of output: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:14:05,028 WARN L233 SmtUtils]: Spent 18.13s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:14:18,923 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2022-11-19 08:14:18,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3408 treesize of output 2844 [2022-11-19 08:14:27,284 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2022-11-19 08:14:27,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3408 treesize of output 2844 [2022-11-19 08:14:41,926 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2022-11-19 08:14:41,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1673 treesize of output 1473 [2022-11-19 08:14:59,187 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-19 08:15:09,211 WARN L233 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 288 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:11,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:15:11,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 101 [2022-11-19 08:15:11,187 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:15:11,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 334 treesize of output 328 [2022-11-19 08:15:11,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 313 treesize of output 305 [2022-11-19 08:15:11,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 305 treesize of output 289 [2022-11-19 08:15:11,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 289 treesize of output 285 [2022-11-19 08:15:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-11-19 08:15:13,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:13,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447510183] [2022-11-19 08:15:13,593 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 08:15:13,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856637072] [2022-11-19 08:15:13,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856637072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:15:13,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [223847983] [2022-11-19 08:15:13,594 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:15:13,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:15:13,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2022-11-19 08:15:13,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223748151] [2022-11-19 08:15:13,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 08:15:13,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-19 08:15:13,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:13,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-19 08:15:13,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=911, Unknown=30, NotChecked=62, Total=1122 [2022-11-19 08:15:13,600 INFO L87 Difference]: Start difference. First operand 118 states and 280 transitions. Second operand has 34 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 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) [2022-11-19 08:15:19,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:19,367 INFO L93 Difference]: Finished difference Result 495 states and 1185 transitions. [2022-11-19 08:15:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 08:15:19,368 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 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 28 [2022-11-19 08:15:19,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:19,371 INFO L225 Difference]: With dead ends: 495 [2022-11-19 08:15:19,371 INFO L226 Difference]: Without dead ends: 490 [2022-11-19 08:15:19,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 111.8s TimeCoverageRelationStatistics Valid=348, Invalid=1882, Unknown=30, NotChecked=92, Total=2352 [2022-11-19 08:15:19,379 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 326 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1122 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:19,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 60 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 350 Invalid, 0 Unknown, 1122 Unchecked, 0.9s Time] [2022-11-19 08:15:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-19 08:15:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 173. [2022-11-19 08:15:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 2.4069767441860463) internal successors, (414), 172 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:15:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 414 transitions. [2022-11-19 08:15:19,413 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 414 transitions. Word has length 28 [2022-11-19 08:15:19,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:19,416 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 414 transitions. [2022-11-19 08:15:19,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 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) [2022-11-19 08:15:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 414 transitions. [2022-11-19 08:15:19,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 08:15:19,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:19,419 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] [2022-11-19 08:15:19,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:15:19,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:19,629 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 08:15:19,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:19,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2108026866, now seen corresponding path program 2 times [2022-11-19 08:15:19,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:19,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339302403] [2022-11-19 08:15:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:19,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:19,648 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 08:15:19,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651366752] [2022-11-19 08:15:19,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:15:19,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:15:19,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:19,650 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:15:19,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c4667c-ce23-4dc7-a04c-cdb55f70fb33/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 08:15:20,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 08:15:20,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:15:20,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-19 08:15:20,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:15:20,423 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-19 08:15:20,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-19 08:15:20,494 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 08:15:20,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-19 08:15:20,626 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 08:15:20,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-19 08:15:20,733 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-19 08:15:20,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-19 08:15:20,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 08:15:20,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-19 08:15:21,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:21,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-19 08:15:21,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:21,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 08:15:21,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:21,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-19 08:15:21,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:15:21,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 08:15:21,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 08:15:21,855 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 08:15:21,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-19 08:15:21,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-19 08:15:22,600 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 08:15:22,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 59 [2022-11-19 08:15:22,627 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-19 08:15:22,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 33 [2022-11-19 08:15:22,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 37 [2022-11-19 08:15:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:15:22,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:15:31,345 INFO L321 Elim1Store]: treesize reduction 4, result has 98.3 percent of original size [2022-11-19 08:15:31,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3632 treesize of output 2879 [2022-11-19 08:21:45,600 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:21:47,669 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:02,594 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:03,027 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:28,245 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:29,018 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:30,145 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:35,204 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:40,595 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:40,710 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:40,837 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:22:41,061 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:41,241 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:41,317 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:41,466 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:41,848 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:42,006 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:42,075 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:22:52,252 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:52,343 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:52,454 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:22:52,639 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:53,918 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:22:54,021 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:22:54,105 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:23:04,661 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:23:04,785 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:23:04,861 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:23:23,366 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:23:24,181 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:23:53,479 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:23:53,655 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:23:55,261 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:23:56,285 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:23:56,562 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:23:58,445 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:00,468 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:01,038 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:01,151 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:01,639 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:16,313 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:16,373 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:16,565 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:16,685 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:16,742 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:17,006 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:17,135 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:17,201 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:17,332 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:19,591 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:19,683 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:19,845 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:23,262 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:25,563 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:29,263 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:29,384 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:29,521 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:29,803 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:30,158 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:30,265 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:30,753 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:30,869 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:31,058 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:31,632 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:33,896 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:34,035 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:34,113 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:41,759 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:42,076 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:45,818 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:45,896 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:45,972 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:46,044 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2022-11-19 08:24:46,689 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:46,775 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:46,854 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:46,926 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:47,128 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:47,205 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:47,575 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:48,207 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:48,820 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:48,932 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:48,999 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:49,074 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:49,153 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:49,241 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:49,328 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:49,404 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:49,498 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2022-11-19 08:24:49,677 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:49,873 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:49,961 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:50,041 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:50,123 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2022-11-19 08:24:50,458 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:50,613 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:50,683 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:50,753 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:50,825 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:50,891 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:50,954 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:51,038 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2022-11-19 08:24:51,179 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:51,236 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:24:51,308 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:51,381 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:24:51,473 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2022-11-19 08:25:08,750 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:11,342 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:11,404 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:25:11,474 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:11,752 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:11,888 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:11,958 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:25:12,801 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:13,166 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:13,233 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:25:13,328 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:14,202 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:14,382 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:15,528 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:15,879 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:15,984 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:25:16,071 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:16,802 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:17,096 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:17,164 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-19 08:25:17,237 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:19,203 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:42,394 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-19 08:25:42,822 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.