./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array8_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array8_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06625eaf591a62e295090a882d83c1e11aaafca7ac8895e7d4adcf51d5b26e02 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 08:19:16,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 08:19:16,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 08:19:16,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 08:19:16,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 08:19:16,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 08:19:16,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 08:19:16,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 08:19:16,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 08:19:16,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 08:19:16,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 08:19:16,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 08:19:16,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 08:19:16,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 08:19:16,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 08:19:16,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 08:19:16,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 08:19:16,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 08:19:16,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 08:19:16,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 08:19:16,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 08:19:16,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 08:19:16,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 08:19:16,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 08:19:16,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 08:19:16,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 08:19:16,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 08:19:16,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 08:19:16,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 08:19:16,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 08:19:16,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 08:19:16,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 08:19:16,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 08:19:16,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 08:19:16,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 08:19:16,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 08:19:16,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 08:19:16,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 08:19:16,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 08:19:16,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 08:19:17,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 08:19:17,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 08:19:17,043 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 08:19:17,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 08:19:17,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 08:19:17,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 08:19:17,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 08:19:17,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 08:19:17,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 08:19:17,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 08:19:17,046 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 08:19:17,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 08:19:17,048 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 08:19:17,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 08:19:17,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 08:19:17,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 08:19:17,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 08:19:17,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 08:19:17,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 08:19:17,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 08:19:17,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 08:19:17,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 08:19:17,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 08:19:17,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 08:19:17,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 08:19:17,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 08:19:17,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 08:19:17,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 08:19:17,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 08:19:17,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 08:19:17,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 08:19:17,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 08:19:17,052 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 08:19:17,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 08:19:17,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 08:19:17,053 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_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06625eaf591a62e295090a882d83c1e11aaafca7ac8895e7d4adcf51d5b26e02 [2022-11-21 08:19:17,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 08:19:17,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 08:19:17,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 08:19:17,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 08:19:17,382 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 08:19:17,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/array-patterns/array8_pattern.c [2022-11-21 08:19:20,422 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 08:19:20,635 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 08:19:20,635 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/sv-benchmarks/c/array-patterns/array8_pattern.c [2022-11-21 08:19:20,649 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/data/e66fbc25c/4176e5eb9d114b92977edf8b340c6f21/FLAGd3ffeb8e3 [2022-11-21 08:19:20,673 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/data/e66fbc25c/4176e5eb9d114b92977edf8b340c6f21 [2022-11-21 08:19:20,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 08:19:20,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 08:19:20,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 08:19:20,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 08:19:20,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 08:19:20,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:20,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4442a817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20, skipping insertion in model container [2022-11-21 08:19:20,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:20,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 08:19:20,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 08:19:20,890 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/sv-benchmarks/c/array-patterns/array8_pattern.c[1321,1334] [2022-11-21 08:19:20,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 08:19:20,924 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 08:19:20,941 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/sv-benchmarks/c/array-patterns/array8_pattern.c[1321,1334] [2022-11-21 08:19:20,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 08:19:20,967 INFO L208 MainTranslator]: Completed translation [2022-11-21 08:19:20,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20 WrapperNode [2022-11-21 08:19:20,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 08:19:20,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 08:19:20,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 08:19:20,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 08:19:20,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:21,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:21,024 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-11-21 08:19:21,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 08:19:21,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 08:19:21,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 08:19:21,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 08:19:21,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:21,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:21,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:21,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:21,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:21,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:21,062 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:21,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:21,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 08:19:21,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 08:19:21,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 08:19:21,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 08:19:21,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (1/1) ... [2022-11-21 08:19:21,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 08:19:21,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:19:21,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 08:19:21,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 08:19:21,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 08:19:21,176 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 08:19:21,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 08:19:21,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 08:19:21,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 08:19:21,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 08:19:21,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 08:19:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 08:19:21,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 08:19:21,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 08:19:21,279 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 08:19:21,281 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 08:19:21,479 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 08:19:21,486 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 08:19:21,486 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 08:19:21,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:19:21 BoogieIcfgContainer [2022-11-21 08:19:21,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 08:19:21,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 08:19:21,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 08:19:21,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 08:19:21,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:19:20" (1/3) ... [2022-11-21 08:19:21,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36223237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:19:21, skipping insertion in model container [2022-11-21 08:19:21,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:19:20" (2/3) ... [2022-11-21 08:19:21,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36223237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:19:21, skipping insertion in model container [2022-11-21 08:19:21,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:19:21" (3/3) ... [2022-11-21 08:19:21,506 INFO L112 eAbstractionObserver]: Analyzing ICFG array8_pattern.c [2022-11-21 08:19:21,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 08:19:21,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 08:19:21,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 08:19:21,615 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=PETRI_NET, 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;@2ab5cae6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 08:19:21,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 08:19:21,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:21,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 08:19:21,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:19:21,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:19:21,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:19:21,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:19:21,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1127586545, now seen corresponding path program 1 times [2022-11-21 08:19:21,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:19:21,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076496613] [2022-11-21 08:19:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:21,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:19:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 08:19:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 08:19:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 08:19:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:19:21,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:19:21,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076496613] [2022-11-21 08:19:21,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076496613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 08:19:21,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 08:19:21,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 08:19:21,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074424488] [2022-11-21 08:19:21,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 08:19:21,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 08:19:21,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:19:21,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 08:19:21,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 08:19:21,991 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 08:19:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:19:22,024 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2022-11-21 08:19:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 08:19:22,027 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-21 08:19:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:19:22,036 INFO L225 Difference]: With dead ends: 53 [2022-11-21 08:19:22,036 INFO L226 Difference]: Without dead ends: 24 [2022-11-21 08:19:22,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 08:19:22,047 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 08:19:22,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 08:19:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-21 08:19:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-21 08:19:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-21 08:19:22,098 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2022-11-21 08:19:22,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:19:22,100 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-21 08:19:22,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 08:19:22,101 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-21 08:19:22,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 08:19:22,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:19:22,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:19:22,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 08:19:22,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:19:22,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:19:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1008571545, now seen corresponding path program 1 times [2022-11-21 08:19:22,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:19:22,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037806831] [2022-11-21 08:19:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:22,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:19:22,150 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:19:22,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831287778] [2022-11-21 08:19:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:22,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:22,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:19:22,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:19:22,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 08:19:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 08:19:22,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 08:19:22,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:19:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:19:22,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 08:19:22,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:19:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037806831] [2022-11-21 08:19:22,470 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:19:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831287778] [2022-11-21 08:19:22,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831287778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 08:19:22,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 08:19:22,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 08:19:22,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983429165] [2022-11-21 08:19:22,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 08:19:22,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 08:19:22,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:19:22,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 08:19:22,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 08:19:22,490 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:19:22,692 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-21 08:19:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 08:19:22,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-21 08:19:22,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:19:22,694 INFO L225 Difference]: With dead ends: 50 [2022-11-21 08:19:22,694 INFO L226 Difference]: Without dead ends: 32 [2022-11-21 08:19:22,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-21 08:19:22,696 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 08:19:22,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 60 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 08:19:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-21 08:19:22,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-11-21 08:19:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-21 08:19:22,706 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2022-11-21 08:19:22,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:19:22,707 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-21 08:19:22,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:22,707 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-21 08:19:22,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 08:19:22,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:19:22,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:19:22,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 08:19:22,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-21 08:19:22,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:19:22,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:19:22,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1890411897, now seen corresponding path program 1 times [2022-11-21 08:19:22,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:19:22,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708213922] [2022-11-21 08:19:22,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:22,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:19:22,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:19:22,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482580227] [2022-11-21 08:19:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:22,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:22,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:19:22,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:19:22,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 08:19:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 08:19:23,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-21 08:19:23,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:19:23,163 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 10 treesize of output 8 [2022-11-21 08:19:23,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:23,273 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 18 treesize of output 18 [2022-11-21 08:19:23,281 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:19:23,979 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 22 [2022-11-21 08:19:24,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:19:24,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-11-21 08:19:24,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:19:24,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 12 [2022-11-21 08:19:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:19:24,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:19:25,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:19:25,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708213922] [2022-11-21 08:19:25,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:19:25,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482580227] [2022-11-21 08:19:25,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482580227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:19:25,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:19:25,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-11-21 08:19:25,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187433136] [2022-11-21 08:19:25,100 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:19:25,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 08:19:25,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:19:25,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 08:19:25,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-11-21 08:19:25,103 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 20 states, 20 states have (on average 1.25) internal successors, (25), 17 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:25,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:19:25,978 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2022-11-21 08:19:25,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 08:19:25,979 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 17 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-21 08:19:25,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:19:25,980 INFO L225 Difference]: With dead ends: 77 [2022-11-21 08:19:25,980 INFO L226 Difference]: Without dead ends: 57 [2022-11-21 08:19:25,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 08:19:25,982 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 79 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 08:19:25,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 181 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 08:19:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-21 08:19:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2022-11-21 08:19:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 08:19:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-11-21 08:19:26,011 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 29 [2022-11-21 08:19:26,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:19:26,011 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-11-21 08:19:26,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 17 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-11-21 08:19:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-21 08:19:26,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:19:26,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:19:26,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 08:19:26,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:26,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:19:26,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:19:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash -32099493, now seen corresponding path program 2 times [2022-11-21 08:19:26,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:19:26,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027482757] [2022-11-21 08:19:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:26,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:19:26,270 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:19:26,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221238629] [2022-11-21 08:19:26,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 08:19:26,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:26,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:19:26,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:19:26,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 08:19:26,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 08:19:26,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:19:26,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 08:19:26,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:19:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:19:26,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:19:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 08:19:26,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:19:26,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027482757] [2022-11-21 08:19:26,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:19:26,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221238629] [2022-11-21 08:19:26,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221238629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 08:19:26,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 08:19:26,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-21 08:19:26,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160489929] [2022-11-21 08:19:26,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 08:19:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 08:19:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:19:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 08:19:26,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-21 08:19:26,493 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:19:26,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:19:26,632 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-11-21 08:19:26,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 08:19:26,632 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-21 08:19:26,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:19:26,639 INFO L225 Difference]: With dead ends: 61 [2022-11-21 08:19:26,639 INFO L226 Difference]: Without dead ends: 40 [2022-11-21 08:19:26,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-21 08:19:26,647 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 48 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 08:19:26,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 87 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 08:19:26,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-21 08:19:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2022-11-21 08:19:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-11-21 08:19:26,668 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 31 [2022-11-21 08:19:26,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:19:26,669 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-11-21 08:19:26,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:19:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-11-21 08:19:26,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-21 08:19:26,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:19:26,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:19:26,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 08:19:26,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:26,877 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:19:26,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:19:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1857874167, now seen corresponding path program 3 times [2022-11-21 08:19:26,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:19:26,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991394316] [2022-11-21 08:19:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:26,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:19:26,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:19:26,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825935825] [2022-11-21 08:19:26,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 08:19:26,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:26,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:19:26,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:19:26,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 08:19:27,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 08:19:27,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:19:27,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 08:19:27,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:19:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:19:27,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:19:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 08:19:27,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:19:27,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991394316] [2022-11-21 08:19:27,192 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:19:27,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825935825] [2022-11-21 08:19:27,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825935825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 08:19:27,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 08:19:27,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-21 08:19:27,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537665979] [2022-11-21 08:19:27,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 08:19:27,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 08:19:27,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:19:27,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 08:19:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-21 08:19:27,195 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:19:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:19:27,316 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-11-21 08:19:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 08:19:27,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-21 08:19:27,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:19:27,318 INFO L225 Difference]: With dead ends: 39 [2022-11-21 08:19:27,318 INFO L226 Difference]: Without dead ends: 35 [2022-11-21 08:19:27,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-21 08:19:27,319 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 08:19:27,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 81 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 08:19:27,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-21 08:19:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-11-21 08:19:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-21 08:19:27,327 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 31 [2022-11-21 08:19:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:19:27,327 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-21 08:19:27,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:19:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-21 08:19:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-21 08:19:27,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:19:27,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:19:27,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 08:19:27,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:27,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:19:27,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:19:27,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1236086951, now seen corresponding path program 4 times [2022-11-21 08:19:27,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:19:27,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114686822] [2022-11-21 08:19:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:27,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:19:27,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:19:27,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197733955] [2022-11-21 08:19:27,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 08:19:27,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:27,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:19:27,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:19:27,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 08:19:27,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 08:19:27,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:19:27,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-21 08:19:27,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:19:27,694 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 10 treesize of output 8 [2022-11-21 08:19:27,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:27,738 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 18 treesize of output 18 [2022-11-21 08:19:27,744 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:19:27,826 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 52 treesize of output 38 [2022-11-21 08:19:28,616 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-21 08:19:28,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 63 [2022-11-21 08:19:29,080 INFO L321 Elim1Store]: treesize reduction 81, result has 45.6 percent of original size [2022-11-21 08:19:29,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 121 treesize of output 160 [2022-11-21 08:19:30,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:30,261 INFO L321 Elim1Store]: treesize reduction 196, result has 20.0 percent of original size [2022-11-21 08:19:30,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 2 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 146 treesize of output 126 [2022-11-21 08:19:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:19:30,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:19:35,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:19:35,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114686822] [2022-11-21 08:19:35,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:19:35,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197733955] [2022-11-21 08:19:35,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197733955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:19:35,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:19:35,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-11-21 08:19:35,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945495999] [2022-11-21 08:19:35,687 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:19:35,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 08:19:35,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:19:35,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 08:19:35,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1035, Unknown=1, NotChecked=0, Total=1190 [2022-11-21 08:19:35,689 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:19:37,622 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2022-11-21 08:19:37,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 08:19:37,623 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-11-21 08:19:37,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:19:37,624 INFO L225 Difference]: With dead ends: 74 [2022-11-21 08:19:37,624 INFO L226 Difference]: Without dead ends: 60 [2022-11-21 08:19:37,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=240, Invalid=1565, Unknown=1, NotChecked=0, Total=1806 [2022-11-21 08:19:37,626 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 34 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 08:19:37,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 283 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 08:19:37,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-21 08:19:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2022-11-21 08:19:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 08:19:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-11-21 08:19:37,635 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 33 [2022-11-21 08:19:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:19:37,636 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-11-21 08:19:37,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-11-21 08:19:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-21 08:19:37,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:19:37,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:19:37,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 08:19:37,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:37,844 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:19:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:19:37,844 INFO L85 PathProgramCache]: Analyzing trace with hash -977921513, now seen corresponding path program 1 times [2022-11-21 08:19:37,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:19:37,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213444585] [2022-11-21 08:19:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:37,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:19:37,863 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:19:37,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930912739] [2022-11-21 08:19:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:37,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:37,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:19:37,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:19:37,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 08:19:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 08:19:37,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-21 08:19:37,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:19:38,020 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 10 treesize of output 8 [2022-11-21 08:19:38,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:38,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-21 08:19:38,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-21 08:19:38,074 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:19:38,083 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:19:38,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:38,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:38,207 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 0 case distinctions, treesize of input 48 treesize of output 39 [2022-11-21 08:19:38,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:38,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:38,690 INFO L321 Elim1Store]: treesize reduction 30, result has 49.2 percent of original size [2022-11-21 08:19:38,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 68 [2022-11-21 08:19:38,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:38,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:38,996 INFO L321 Elim1Store]: treesize reduction 50, result has 36.7 percent of original size [2022-11-21 08:19:38,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 71 treesize of output 94 [2022-11-21 08:19:39,859 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 08:19:39,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 117 treesize of output 93 [2022-11-21 08:19:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:19:40,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:19:51,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:19:51,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213444585] [2022-11-21 08:19:51,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:19:51,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930912739] [2022-11-21 08:19:51,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930912739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:19:51,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:19:51,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-11-21 08:19:51,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990361843] [2022-11-21 08:19:51,153 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:19:51,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 08:19:51,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:19:51,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 08:19:51,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=629, Unknown=2, NotChecked=0, Total=756 [2022-11-21 08:19:51,155 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:19:52,532 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2022-11-21 08:19:52,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 08:19:52,533 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-11-21 08:19:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:19:52,534 INFO L225 Difference]: With dead ends: 71 [2022-11-21 08:19:52,534 INFO L226 Difference]: Without dead ends: 67 [2022-11-21 08:19:52,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=234, Invalid=1246, Unknown=2, NotChecked=0, Total=1482 [2022-11-21 08:19:52,537 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 08:19:52,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 149 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 08:19:52,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-21 08:19:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2022-11-21 08:19:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-21 08:19:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-11-21 08:19:52,550 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 33 [2022-11-21 08:19:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:19:52,551 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-11-21 08:19:52,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:19:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-11-21 08:19:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 08:19:52,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:19:52,552 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:19:52,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 08:19:52,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:52,756 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:19:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:19:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash 868497529, now seen corresponding path program 2 times [2022-11-21 08:19:52,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:19:52,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174320988] [2022-11-21 08:19:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:19:52,781 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:19:52,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168432914] [2022-11-21 08:19:52,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 08:19:52,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:52,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:19:52,789 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:19:52,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 08:19:52,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 08:19:52,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:19:52,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 08:19:52,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:19:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:19:52,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:19:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 08:19:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:19:53,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174320988] [2022-11-21 08:19:53,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:19:53,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168432914] [2022-11-21 08:19:53,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168432914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 08:19:53,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 08:19:53,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-21 08:19:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561861025] [2022-11-21 08:19:53,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 08:19:53,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 08:19:53,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:19:53,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 08:19:53,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-21 08:19:53,048 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:19:53,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:19:53,227 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2022-11-21 08:19:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 08:19:53,228 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-21 08:19:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:19:53,229 INFO L225 Difference]: With dead ends: 105 [2022-11-21 08:19:53,229 INFO L226 Difference]: Without dead ends: 93 [2022-11-21 08:19:53,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-21 08:19:53,230 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 80 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 08:19:53,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 117 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 08:19:53,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-21 08:19:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 76. [2022-11-21 08:19:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 65 states have internal predecessors, (75), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-21 08:19:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2022-11-21 08:19:53,249 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 35 [2022-11-21 08:19:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:19:53,250 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2022-11-21 08:19:53,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:19:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2022-11-21 08:19:53,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 08:19:53,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:19:53,251 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:19:53,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 08:19:53,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-21 08:19:53,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:19:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:19:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1373135831, now seen corresponding path program 5 times [2022-11-21 08:19:53,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:19:53,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352374847] [2022-11-21 08:19:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:53,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:19:53,477 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:19:53,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248490317] [2022-11-21 08:19:53,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 08:19:53,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:53,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:19:53,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:19:53,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 08:19:53,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-21 08:19:53,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:19:53,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 08:19:53,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:19:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:19:53,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:19:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 08:19:53,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:19:53,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352374847] [2022-11-21 08:19:53,804 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:19:53,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248490317] [2022-11-21 08:19:53,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248490317] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 08:19:53,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 08:19:53,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-21 08:19:53,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675899038] [2022-11-21 08:19:53,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 08:19:53,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 08:19:53,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:19:53,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 08:19:53,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-21 08:19:53,806 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:19:54,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:19:54,033 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2022-11-21 08:19:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 08:19:54,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-21 08:19:54,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:19:54,035 INFO L225 Difference]: With dead ends: 90 [2022-11-21 08:19:54,035 INFO L226 Difference]: Without dead ends: 86 [2022-11-21 08:19:54,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-21 08:19:54,036 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 66 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 08:19:54,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 122 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 08:19:54,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-21 08:19:54,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 65. [2022-11-21 08:19:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-21 08:19:54,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2022-11-21 08:19:54,054 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 35 [2022-11-21 08:19:54,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:19:54,054 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2022-11-21 08:19:54,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:19:54,055 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2022-11-21 08:19:54,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-21 08:19:54,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:19:54,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:19:54,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 08:19:54,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:54,262 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:19:54,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:19:54,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1081807417, now seen corresponding path program 6 times [2022-11-21 08:19:54,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:19:54,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913171821] [2022-11-21 08:19:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:19:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:19:54,278 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:19:54,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979750233] [2022-11-21 08:19:54,278 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 08:19:54,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:19:54,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:19:54,280 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:19:54,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 08:19:54,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-21 08:19:54,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:19:54,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-21 08:19:54,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:19:54,456 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 10 treesize of output 8 [2022-11-21 08:19:54,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:54,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-21 08:19:54,503 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:19:54,508 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 27 treesize of output 26 [2022-11-21 08:19:54,615 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 0 case distinctions, treesize of input 64 treesize of output 53 [2022-11-21 08:19:54,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:54,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:54,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:54,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:54,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 63 [2022-11-21 08:19:55,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:55,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:55,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:55,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:55,600 INFO L321 Elim1Store]: treesize reduction 46, result has 48.9 percent of original size [2022-11-21 08:19:55,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 98 [2022-11-21 08:19:55,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:55,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:55,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:55,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:56,048 INFO L321 Elim1Store]: treesize reduction 76, result has 49.3 percent of original size [2022-11-21 08:19:56,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 106 treesize of output 163 [2022-11-21 08:19:57,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:57,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:19:57,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:19:57,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 67 [2022-11-21 08:19:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:19:58,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:19:59,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:19:59,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913171821] [2022-11-21 08:19:59,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:19:59,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979750233] [2022-11-21 08:19:59,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979750233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:19:59,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:19:59,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-11-21 08:19:59,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216646960] [2022-11-21 08:19:59,900 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:19:59,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 08:19:59,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:19:59,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 08:19:59,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 08:19:59,903 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 25 states, 25 states have (on average 1.32) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:20:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:20:04,021 INFO L93 Difference]: Finished difference Result 121 states and 140 transitions. [2022-11-21 08:20:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 08:20:04,022 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-11-21 08:20:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:20:04,024 INFO L225 Difference]: With dead ends: 121 [2022-11-21 08:20:04,024 INFO L226 Difference]: Without dead ends: 117 [2022-11-21 08:20:04,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=515, Invalid=3025, Unknown=0, NotChecked=0, Total=3540 [2022-11-21 08:20:04,026 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 100 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 08:20:04,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 326 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 08:20:04,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-21 08:20:04,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 78. [2022-11-21 08:20:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-21 08:20:04,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-11-21 08:20:04,065 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 37 [2022-11-21 08:20:04,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:20:04,065 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-11-21 08:20:04,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:20:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-11-21 08:20:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-21 08:20:04,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:20:04,068 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:20:04,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 08:20:04,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 08:20:04,274 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:20:04,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:20:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash 70690167, now seen corresponding path program 3 times [2022-11-21 08:20:04,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:20:04,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537100825] [2022-11-21 08:20:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:20:04,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:20:04,289 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:20:04,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772866322] [2022-11-21 08:20:04,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 08:20:04,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:20:04,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:20:04,291 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:20:04,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 08:20:04,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-21 08:20:04,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:20:04,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-21 08:20:04,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:20:04,434 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 10 treesize of output 8 [2022-11-21 08:20:04,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:04,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-21 08:20:04,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-21 08:20:04,496 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:20:04,507 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:20:04,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:04,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:04,594 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 0 case distinctions, treesize of input 48 treesize of output 39 [2022-11-21 08:20:04,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:04,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:04,755 INFO L321 Elim1Store]: treesize reduction 66, result has 43.6 percent of original size [2022-11-21 08:20:04,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 72 treesize of output 85 [2022-11-21 08:20:05,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:05,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:05,872 INFO L321 Elim1Store]: treesize reduction 80, result has 42.0 percent of original size [2022-11-21 08:20:05,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 70 treesize of output 114 [2022-11-21 08:20:06,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:06,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:06,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:06,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:06,387 INFO L321 Elim1Store]: treesize reduction 114, result has 39.0 percent of original size [2022-11-21 08:20:06,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 130 treesize of output 188 [2022-11-21 08:20:13,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:13,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:20:13,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:20:13,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 08:20:13,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 4 disjoint index pairs (out of 91 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 260 treesize of output 500 [2022-11-21 08:20:40,145 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:20:45,246 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:20:47,848 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:20:54,657 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:20:55,595 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:20:56,958 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:20:57,531 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:20:59,991 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:02,355 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:02,888 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:05,102 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:07,575 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:08,216 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:10,105 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:10,791 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:12,419 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:13,474 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:14,019 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:17,959 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:18,488 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:22,617 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:23,155 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:24,032 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:21:24,575 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:22:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:22:42,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:22:47,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:22:47,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537100825] [2022-11-21 08:22:47,939 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:22:47,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772866322] [2022-11-21 08:22:47,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772866322] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:22:47,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:22:47,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-11-21 08:22:47,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443748675] [2022-11-21 08:22:47,940 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:22:47,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 08:22:47,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:22:47,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 08:22:47,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1357, Unknown=2, NotChecked=0, Total=1560 [2022-11-21 08:22:47,942 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 24 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:22:54,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:22:54,841 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2022-11-21 08:22:54,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-21 08:22:54,842 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 24 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-11-21 08:22:54,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:22:54,843 INFO L225 Difference]: With dead ends: 100 [2022-11-21 08:22:54,843 INFO L226 Difference]: Without dead ends: 96 [2022-11-21 08:22:54,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=360, Invalid=2289, Unknown=3, NotChecked=0, Total=2652 [2022-11-21 08:22:54,845 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 08:22:54,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 337 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 08:22:54,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-21 08:22:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 78. [2022-11-21 08:22:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-21 08:22:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-11-21 08:22:54,888 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 37 [2022-11-21 08:22:54,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:22:54,889 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-11-21 08:22:54,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 24 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:22:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-11-21 08:22:54,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-21 08:22:54,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:22:54,897 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:22:54,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 08:22:55,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 08:22:55,103 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:22:55,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:22:55,104 INFO L85 PathProgramCache]: Analyzing trace with hash 288075803, now seen corresponding path program 7 times [2022-11-21 08:22:55,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:22:55,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325839274] [2022-11-21 08:22:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:22:55,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:22:55,133 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:22:55,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813204881] [2022-11-21 08:22:55,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 08:22:55,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:22:55,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:22:55,164 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:22:55,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 08:22:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 08:22:55,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 08:22:55,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:22:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:22:55,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:22:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 08:22:55,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:22:55,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325839274] [2022-11-21 08:22:55,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:22:55,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813204881] [2022-11-21 08:22:55,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813204881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 08:22:55,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 08:22:55,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-21 08:22:55,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113802264] [2022-11-21 08:22:55,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 08:22:55,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 08:22:55,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:22:55,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 08:22:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-21 08:22:55,583 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:22:55,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:22:55,956 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2022-11-21 08:22:55,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 08:22:55,957 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-11-21 08:22:55,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:22:55,958 INFO L225 Difference]: With dead ends: 144 [2022-11-21 08:22:55,958 INFO L226 Difference]: Without dead ends: 130 [2022-11-21 08:22:55,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-11-21 08:22:55,960 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 98 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 08:22:55,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 171 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 08:22:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-21 08:22:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2022-11-21 08:22:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 89 states have internal predecessors, (103), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-21 08:22:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2022-11-21 08:22:56,006 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 39 [2022-11-21 08:22:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:22:56,007 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2022-11-21 08:22:56,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:22:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2022-11-21 08:22:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-21 08:22:56,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:22:56,008 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:22:56,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 08:22:56,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 08:22:56,215 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:22:56,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:22:56,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1485008409, now seen corresponding path program 8 times [2022-11-21 08:22:56,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:22:56,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485811384] [2022-11-21 08:22:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:22:56,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:22:56,237 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:22:56,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873203675] [2022-11-21 08:22:56,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 08:22:56,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:22:56,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:22:56,243 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:22:56,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 08:22:56,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 08:22:56,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:22:56,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-21 08:22:56,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:22:56,401 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 10 treesize of output 8 [2022-11-21 08:22:56,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:56,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-21 08:22:56,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-21 08:22:56,443 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:22:56,451 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:22:56,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:56,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:56,584 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 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-21 08:22:56,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:56,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:56,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:56,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:56,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:56,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:56,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 67 [2022-11-21 08:22:57,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 87 [2022-11-21 08:22:57,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:57,828 INFO L321 Elim1Store]: treesize reduction 62, result has 48.8 percent of original size [2022-11-21 08:22:57,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 128 [2022-11-21 08:22:58,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:58,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:58,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:58,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:58,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:58,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:22:58,275 INFO L321 Elim1Store]: treesize reduction 166, result has 17.4 percent of original size [2022-11-21 08:22:58,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 127 treesize of output 142 [2022-11-21 08:23:00,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 72 [2022-11-21 08:23:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:23:00,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:23:07,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:23:07,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485811384] [2022-11-21 08:23:07,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:23:07,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873203675] [2022-11-21 08:23:07,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873203675] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:23:07,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:23:07,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-21 08:23:07,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887529098] [2022-11-21 08:23:07,871 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:23:07,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 08:23:07,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:23:07,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 08:23:07,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1289, Unknown=1, NotChecked=0, Total=1482 [2022-11-21 08:23:07,873 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 26 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:23:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:23:10,341 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2022-11-21 08:23:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 08:23:10,342 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 26 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-11-21 08:23:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:23:10,343 INFO L225 Difference]: With dead ends: 125 [2022-11-21 08:23:10,343 INFO L226 Difference]: Without dead ends: 121 [2022-11-21 08:23:10,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=276, Invalid=1979, Unknown=1, NotChecked=0, Total=2256 [2022-11-21 08:23:10,344 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 59 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 08:23:10,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 346 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 08:23:10,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-21 08:23:10,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 109. [2022-11-21 08:23:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 94 states have internal predecessors, (109), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-21 08:23:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions. [2022-11-21 08:23:10,378 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 41 [2022-11-21 08:23:10,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:23:10,379 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions. [2022-11-21 08:23:10,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 26 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:23:10,379 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions. [2022-11-21 08:23:10,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-21 08:23:10,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:23:10,380 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:23:10,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 08:23:10,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:23:10,581 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:23:10,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:23:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash 463940055, now seen corresponding path program 4 times [2022-11-21 08:23:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:23:10,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294411651] [2022-11-21 08:23:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:23:10,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:23:10,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:23:10,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115718069] [2022-11-21 08:23:10,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 08:23:10,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:23:10,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:23:10,602 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:23:10,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 08:23:10,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 08:23:10,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:23:10,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-21 08:23:10,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:23:10,800 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 10 treesize of output 8 [2022-11-21 08:23:10,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:10,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-21 08:23:10,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-21 08:23:10,853 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:23:10,861 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:23:10,955 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 0 case distinctions, treesize of input 64 treesize of output 53 [2022-11-21 08:23:11,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 67 [2022-11-21 08:23:11,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:11,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 87 [2022-11-21 08:23:12,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,188 INFO L321 Elim1Store]: treesize reduction 62, result has 48.8 percent of original size [2022-11-21 08:23:12,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 128 [2022-11-21 08:23:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:12,751 INFO L321 Elim1Store]: treesize reduction 68, result has 36.4 percent of original size [2022-11-21 08:23:12,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 17 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 164 [2022-11-21 08:23:18,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:18,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:18,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:18,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:18,280 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 08:23:18,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 7 disjoint index pairs (out of 66 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 215 treesize of output 215 [2022-11-21 08:23:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:23:19,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:23:27,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:23:27,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294411651] [2022-11-21 08:23:27,222 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:23:27,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115718069] [2022-11-21 08:23:27,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115718069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:23:27,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:23:27,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-11-21 08:23:27,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111145818] [2022-11-21 08:23:27,223 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:23:27,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-21 08:23:27,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:23:27,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-21 08:23:27,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1504, Unknown=2, NotChecked=0, Total=1722 [2022-11-21 08:23:27,225 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 26 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:23:33,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 08:23:33,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:23:33,287 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2022-11-21 08:23:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 08:23:33,288 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 26 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-11-21 08:23:33,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:23:33,289 INFO L225 Difference]: With dead ends: 127 [2022-11-21 08:23:33,289 INFO L226 Difference]: Without dead ends: 123 [2022-11-21 08:23:33,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=348, Invalid=2200, Unknown=2, NotChecked=0, Total=2550 [2022-11-21 08:23:33,290 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 45 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-21 08:23:33,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 363 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 727 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-21 08:23:33,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-21 08:23:33,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 106. [2022-11-21 08:23:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 91 states have internal predecessors, (105), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-21 08:23:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2022-11-21 08:23:33,334 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 41 [2022-11-21 08:23:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:23:33,335 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2022-11-21 08:23:33,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 26 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:23:33,335 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2022-11-21 08:23:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 08:23:33,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:23:33,336 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:23:33,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 08:23:33,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:23:33,540 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:23:33,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:23:33,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2111753712, now seen corresponding path program 1 times [2022-11-21 08:23:33,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:23:33,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370950049] [2022-11-21 08:23:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:23:33,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:23:33,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:23:33,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612994111] [2022-11-21 08:23:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:23:33,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:23:33,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:23:33,555 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:23:33,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 08:23:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 08:23:33,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-21 08:23:33,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:23:33,697 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 10 treesize of output 8 [2022-11-21 08:23:33,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:33,754 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 18 treesize of output 18 [2022-11-21 08:23:33,759 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:23:33,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:33,849 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 47 treesize of output 33 [2022-11-21 08:23:34,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:34,493 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-21 08:23:34,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 52 [2022-11-21 08:23:34,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:34,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:34,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2022-11-21 08:23:35,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:35,085 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-21 08:23:35,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 52 [2022-11-21 08:23:35,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:35,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:35,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:35,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 56 [2022-11-21 08:23:35,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:35,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:35,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 20 [2022-11-21 08:23:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 08:23:35,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:23:37,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:23:37,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370950049] [2022-11-21 08:23:37,293 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:23:37,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612994111] [2022-11-21 08:23:37,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612994111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:23:37,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:23:37,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-11-21 08:23:37,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297911624] [2022-11-21 08:23:37,294 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:23:37,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 08:23:37,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:23:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 08:23:37,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 08:23:37,296 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:23:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:23:39,521 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2022-11-21 08:23:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 08:23:39,521 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-11-21 08:23:39,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:23:39,523 INFO L225 Difference]: With dead ends: 130 [2022-11-21 08:23:39,523 INFO L226 Difference]: Without dead ends: 120 [2022-11-21 08:23:39,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=381, Invalid=2069, Unknown=0, NotChecked=0, Total=2450 [2022-11-21 08:23:39,525 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 73 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 08:23:39,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 234 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 08:23:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-21 08:23:39,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2022-11-21 08:23:39,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 99 states have (on average 1.1515151515151516) internal successors, (114), 99 states have internal predecessors, (114), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-21 08:23:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2022-11-21 08:23:39,581 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 43 [2022-11-21 08:23:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:23:39,581 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2022-11-21 08:23:39,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:23:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2022-11-21 08:23:39,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 08:23:39,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:23:39,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:23:39,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 08:23:39,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 08:23:39,789 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:23:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:23:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1853588274, now seen corresponding path program 1 times [2022-11-21 08:23:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:23:39,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216933443] [2022-11-21 08:23:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:23:39,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:23:39,802 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:23:39,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654691976] [2022-11-21 08:23:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:23:39,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:23:39,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:23:39,804 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:23:39,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 08:23:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 08:23:39,966 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-21 08:23:39,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:23:39,996 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 10 treesize of output 8 [2022-11-21 08:23:40,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:40,035 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 18 treesize of output 18 [2022-11-21 08:23:40,039 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:23:40,128 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 52 treesize of output 38 [2022-11-21 08:23:40,681 INFO L321 Elim1Store]: treesize reduction 20, result has 42.9 percent of original size [2022-11-21 08:23:40,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 43 [2022-11-21 08:23:40,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:40,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:40,963 INFO L321 Elim1Store]: treesize reduction 144, result has 14.3 percent of original size [2022-11-21 08:23:40,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 54 treesize of output 47 [2022-11-21 08:23:41,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:41,618 INFO L321 Elim1Store]: treesize reduction 127, result has 25.7 percent of original size [2022-11-21 08:23:41,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 70 [2022-11-21 08:23:41,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:41,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:41,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:41,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:41,959 INFO L321 Elim1Store]: treesize reduction 34, result has 29.2 percent of original size [2022-11-21 08:23:41,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 62 [2022-11-21 08:23:42,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:42,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:42,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:42,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:42,610 INFO L321 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2022-11-21 08:23:42,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 70 treesize of output 38 [2022-11-21 08:23:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:23:42,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:23:43,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:23:43,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216933443] [2022-11-21 08:23:43,887 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:23:43,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654691976] [2022-11-21 08:23:43,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654691976] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:23:43,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:23:43,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-11-21 08:23:43,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593758025] [2022-11-21 08:23:43,888 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:23:43,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 08:23:43,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:23:43,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 08:23:43,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1434, Unknown=0, NotChecked=0, Total=1640 [2022-11-21 08:23:43,890 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 26 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 08:23:46,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:23:46,244 INFO L93 Difference]: Finished difference Result 133 states and 149 transitions. [2022-11-21 08:23:46,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 08:23:46,244 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 26 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43 [2022-11-21 08:23:46,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:23:46,245 INFO L225 Difference]: With dead ends: 133 [2022-11-21 08:23:46,246 INFO L226 Difference]: Without dead ends: 123 [2022-11-21 08:23:46,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=340, Invalid=2416, Unknown=0, NotChecked=0, Total=2756 [2022-11-21 08:23:46,248 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 66 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 08:23:46,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 245 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 08:23:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-21 08:23:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2022-11-21 08:23:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.1505376344086022) internal successors, (107), 93 states have internal predecessors, (107), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-21 08:23:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2022-11-21 08:23:46,301 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 43 [2022-11-21 08:23:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:23:46,302 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2022-11-21 08:23:46,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 26 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 08:23:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2022-11-21 08:23:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 08:23:46,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:23:46,303 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:23:46,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 08:23:46,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 08:23:46,508 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:23:46,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:23:46,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1892898994, now seen corresponding path program 2 times [2022-11-21 08:23:46,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:23:46,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586392879] [2022-11-21 08:23:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:23:46,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:23:46,523 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:23:46,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757432269] [2022-11-21 08:23:46,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 08:23:46,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:23:46,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:23:46,525 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:23:46,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 08:23:46,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 08:23:46,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:23:46,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-21 08:23:46,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:23:46,731 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 10 treesize of output 8 [2022-11-21 08:23:46,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:46,782 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 18 treesize of output 18 [2022-11-21 08:23:46,787 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:23:46,900 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 52 treesize of output 38 [2022-11-21 08:23:47,534 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-21 08:23:47,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 40 [2022-11-21 08:23:47,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:47,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2022-11-21 08:23:49,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:49,546 INFO L321 Elim1Store]: treesize reduction 28, result has 48.1 percent of original size [2022-11-21 08:23:49,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 70 [2022-11-21 08:23:52,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:52,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:52,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:52,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:52,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 65 [2022-11-21 08:23:52,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:52,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:52,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:52,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:23:52,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 22 [2022-11-21 08:23:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:23:52,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:23:53,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:23:53,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586392879] [2022-11-21 08:23:53,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:23:53,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757432269] [2022-11-21 08:23:53,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757432269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:23:53,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:23:53,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-11-21 08:23:53,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736772879] [2022-11-21 08:23:53,640 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:23:53,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 08:23:53,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:23:53,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 08:23:53,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1439, Unknown=1, NotChecked=0, Total=1640 [2022-11-21 08:23:53,642 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 26 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 08:23:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:23:58,263 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2022-11-21 08:23:58,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 08:23:58,264 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 26 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43 [2022-11-21 08:23:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:23:58,265 INFO L225 Difference]: With dead ends: 160 [2022-11-21 08:23:58,265 INFO L226 Difference]: Without dead ends: 140 [2022-11-21 08:23:58,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=475, Invalid=3064, Unknown=1, NotChecked=0, Total=3540 [2022-11-21 08:23:58,267 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 111 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 08:23:58,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 326 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 08:23:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-21 08:23:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2022-11-21 08:23:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 109 states have (on average 1.146788990825688) internal successors, (125), 109 states have internal predecessors, (125), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-21 08:23:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2022-11-21 08:23:58,329 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 43 [2022-11-21 08:23:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:23:58,329 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2022-11-21 08:23:58,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 26 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 08:23:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2022-11-21 08:23:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 08:23:58,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:23:58,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:23:58,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-21 08:23:58,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 08:23:58,536 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:23:58,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:23:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1634733556, now seen corresponding path program 1 times [2022-11-21 08:23:58,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:23:58,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057748109] [2022-11-21 08:23:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:23:58,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:23:58,549 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:23:58,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826122053] [2022-11-21 08:23:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:23:58,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:23:58,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:23:58,551 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:23:58,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 08:23:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 08:23:58,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-21 08:23:58,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:23:58,717 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 10 treesize of output 8 [2022-11-21 08:23:58,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:58,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-21 08:23:58,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-21 08:23:58,782 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:23:58,791 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:23:58,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:58,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:58,900 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 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-21 08:23:59,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:23:59,644 INFO L321 Elim1Store]: treesize reduction 30, result has 49.2 percent of original size [2022-11-21 08:23:59,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 56 [2022-11-21 08:23:59,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:00,009 INFO L321 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2022-11-21 08:24:00,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 79 [2022-11-21 08:24:01,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:01,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:01,075 INFO L321 Elim1Store]: treesize reduction 30, result has 49.2 percent of original size [2022-11-21 08:24:01,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 90 [2022-11-21 08:24:01,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:01,530 INFO L321 Elim1Store]: treesize reduction 62, result has 10.1 percent of original size [2022-11-21 08:24:01,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 72 [2022-11-21 08:24:02,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 41 [2022-11-21 08:24:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:24:02,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:24:04,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:24:04,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057748109] [2022-11-21 08:24:04,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:24:04,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826122053] [2022-11-21 08:24:04,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826122053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:24:04,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:24:04,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-11-21 08:24:04,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516892242] [2022-11-21 08:24:04,309 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:24:04,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 08:24:04,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:24:04,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 08:24:04,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1433, Unknown=0, NotChecked=0, Total=1640 [2022-11-21 08:24:04,311 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 26 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 08:24:07,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:24:07,200 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2022-11-21 08:24:07,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 08:24:07,200 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 26 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43 [2022-11-21 08:24:07,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:24:07,202 INFO L225 Difference]: With dead ends: 153 [2022-11-21 08:24:07,202 INFO L226 Difference]: Without dead ends: 143 [2022-11-21 08:24:07,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=371, Invalid=2709, Unknown=0, NotChecked=0, Total=3080 [2022-11-21 08:24:07,204 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 80 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 08:24:07,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 308 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 08:24:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-21 08:24:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 138. [2022-11-21 08:24:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 117 states have internal predecessors, (133), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-21 08:24:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2022-11-21 08:24:07,262 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 43 [2022-11-21 08:24:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:24:07,262 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2022-11-21 08:24:07,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 26 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 08:24:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2022-11-21 08:24:07,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 08:24:07,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:24:07,264 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:24:07,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-21 08:24:07,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 08:24:07,466 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:24:07,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:24:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1217172475, now seen corresponding path program 9 times [2022-11-21 08:24:07,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:24:07,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450313163] [2022-11-21 08:24:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:24:07,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:24:07,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:24:07,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933646214] [2022-11-21 08:24:07,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 08:24:07,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:24:07,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:24:07,512 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:24:07,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-21 08:24:07,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 08:24:07,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:24:07,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 08:24:07,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:24:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:24:07,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:24:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 08:24:08,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:24:08,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450313163] [2022-11-21 08:24:08,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:24:08,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933646214] [2022-11-21 08:24:08,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933646214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 08:24:08,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 08:24:08,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-11-21 08:24:08,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255901961] [2022-11-21 08:24:08,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 08:24:08,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 08:24:08,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:24:08,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 08:24:08,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-11-21 08:24:08,037 INFO L87 Difference]: Start difference. First operand 138 states and 153 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:24:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:24:08,675 INFO L93 Difference]: Finished difference Result 223 states and 242 transitions. [2022-11-21 08:24:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 08:24:08,676 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-11-21 08:24:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:24:08,680 INFO L225 Difference]: With dead ends: 223 [2022-11-21 08:24:08,681 INFO L226 Difference]: Without dead ends: 207 [2022-11-21 08:24:08,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 08:24:08,683 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 189 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 08:24:08,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 161 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 08:24:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-21 08:24:08,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 169. [2022-11-21 08:24:08,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 144 states have (on average 1.1458333333333333) internal successors, (165), 144 states have internal predecessors, (165), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-21 08:24:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 189 transitions. [2022-11-21 08:24:08,752 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 189 transitions. Word has length 43 [2022-11-21 08:24:08,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:24:08,752 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 189 transitions. [2022-11-21 08:24:08,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 08:24:08,753 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 189 transitions. [2022-11-21 08:24:08,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-21 08:24:08,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:24:08,754 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:24:08,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-21 08:24:08,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:24:08,961 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:24:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:24:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2118573319, now seen corresponding path program 10 times [2022-11-21 08:24:08,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:24:08,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78201576] [2022-11-21 08:24:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:24:08,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:24:08,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:24:08,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269730213] [2022-11-21 08:24:08,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 08:24:08,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:24:08,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:24:08,985 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:24:09,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-21 08:24:09,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 08:24:09,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:24:09,238 WARN L261 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-21 08:24:09,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:24:09,257 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 10 treesize of output 8 [2022-11-21 08:24:09,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-21 08:24:09,300 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:24:09,305 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 27 treesize of output 26 [2022-11-21 08:24:09,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,410 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 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-21 08:24:09,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 73 [2022-11-21 08:24:09,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 91 [2022-11-21 08:24:09,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:09,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:10,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 111 [2022-11-21 08:24:11,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,318 INFO L321 Elim1Store]: treesize reduction 78, result has 48.7 percent of original size [2022-11-21 08:24:11,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 5 case distinctions, treesize of input 102 treesize of output 158 [2022-11-21 08:24:11,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:11,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:12,200 INFO L321 Elim1Store]: treesize reduction 128, result has 49.2 percent of original size [2022-11-21 08:24:12,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 15 case distinctions, treesize of input 154 treesize of output 255 [2022-11-21 08:24:18,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:18,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:18,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:18,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 08:24:18,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 11 disjoint index pairs (out of 66 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 378 treesize of output 158 [2022-11-21 08:24:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:24:18,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:24:24,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:24:24,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78201576] [2022-11-21 08:24:24,970 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:24:24,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269730213] [2022-11-21 08:24:24,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269730213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:24:24,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:24:24,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-11-21 08:24:24,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364127928] [2022-11-21 08:24:24,970 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:24:24,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-21 08:24:24,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:24:24,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-21 08:24:24,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2167, Unknown=1, NotChecked=0, Total=2450 [2022-11-21 08:24:24,972 INFO L87 Difference]: Start difference. First operand 169 states and 189 transitions. Second operand has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 31 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:24:35,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:24:35,574 INFO L93 Difference]: Finished difference Result 228 states and 260 transitions. [2022-11-21 08:24:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-21 08:24:35,575 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 31 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-21 08:24:35,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:24:35,577 INFO L225 Difference]: With dead ends: 228 [2022-11-21 08:24:35,577 INFO L226 Difference]: Without dead ends: 224 [2022-11-21 08:24:35,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=722, Invalid=4679, Unknown=1, NotChecked=0, Total=5402 [2022-11-21 08:24:35,580 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 98 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 08:24:35,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 439 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 08:24:35,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-21 08:24:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 174. [2022-11-21 08:24:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 149 states have (on average 1.1476510067114094) internal successors, (171), 149 states have internal predecessors, (171), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-21 08:24:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 195 transitions. [2022-11-21 08:24:35,659 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 195 transitions. Word has length 45 [2022-11-21 08:24:35,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:24:35,660 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 195 transitions. [2022-11-21 08:24:35,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 31 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:24:35,660 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 195 transitions. [2022-11-21 08:24:35,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-21 08:24:35,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:24:35,662 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:24:35,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-21 08:24:35,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:24:35,862 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:24:35,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:24:35,863 INFO L85 PathProgramCache]: Analyzing trace with hash 182249271, now seen corresponding path program 5 times [2022-11-21 08:24:35,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:24:35,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084482123] [2022-11-21 08:24:35,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:24:35,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:24:35,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:24:35,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246703572] [2022-11-21 08:24:35,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 08:24:35,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:24:35,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:24:35,884 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:24:35,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-21 08:24:36,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-21 08:24:36,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:24:36,147 WARN L261 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-21 08:24:36,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:24:36,186 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 18 treesize of output 16 [2022-11-21 08:24:36,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-21 08:24:36,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-21 08:24:36,259 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:24:36,271 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:24:36,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,412 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 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-21 08:24:36,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 61 [2022-11-21 08:24:36,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2022-11-21 08:24:36,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-21 08:24:36,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-21 08:24:36,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:36,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 91 [2022-11-21 08:24:37,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:37,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:37,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:37,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:37,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:37,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:37,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:37,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:37,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 111 [2022-11-21 08:24:38,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:38,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:38,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:38,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:38,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:38,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:38,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:38,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:38,528 INFO L321 Elim1Store]: treesize reduction 78, result has 48.7 percent of original size [2022-11-21 08:24:38,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 5 case distinctions, treesize of input 102 treesize of output 158 [2022-11-21 08:24:39,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:39,133 INFO L321 Elim1Store]: treesize reduction 68, result has 36.4 percent of original size [2022-11-21 08:24:39,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 27 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 4 case distinctions, treesize of input 139 treesize of output 188 [2022-11-21 08:24:43,078 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 08:24:43,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 11 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 10 case distinctions, treesize of input 221 treesize of output 241 [2022-11-21 08:24:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:24:44,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:24:48,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:24:48,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084482123] [2022-11-21 08:24:48,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:24:48,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246703572] [2022-11-21 08:24:48,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246703572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:24:48,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:24:48,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-11-21 08:24:48,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097302483] [2022-11-21 08:24:48,082 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:24:48,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-21 08:24:48,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:24:48,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-21 08:24:48,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2146, Unknown=0, NotChecked=0, Total=2450 [2022-11-21 08:24:48,084 INFO L87 Difference]: Start difference. First operand 174 states and 195 transitions. Second operand has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 31 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:24:55,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 08:24:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:24:56,027 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2022-11-21 08:24:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 08:24:56,027 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 31 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-21 08:24:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:24:56,028 INFO L225 Difference]: With dead ends: 194 [2022-11-21 08:24:56,028 INFO L226 Difference]: Without dead ends: 190 [2022-11-21 08:24:56,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=499, Invalid=3407, Unknown=0, NotChecked=0, Total=3906 [2022-11-21 08:24:56,030 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 92 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-21 08:24:56,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 402 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1150 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-21 08:24:56,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-21 08:24:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 171. [2022-11-21 08:24:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 146 states have (on average 1.143835616438356) internal successors, (167), 146 states have internal predecessors, (167), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-21 08:24:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 191 transitions. [2022-11-21 08:24:56,088 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 191 transitions. Word has length 45 [2022-11-21 08:24:56,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:24:56,089 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 191 transitions. [2022-11-21 08:24:56,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 31 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 08:24:56,089 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 191 transitions. [2022-11-21 08:24:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-21 08:24:56,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:24:56,090 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:24:56,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-21 08:24:56,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:24:56,296 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:24:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:24:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash 571342256, now seen corresponding path program 2 times [2022-11-21 08:24:56,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:24:56,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626163991] [2022-11-21 08:24:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:24:56,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:24:56,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:24:56,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621243932] [2022-11-21 08:24:56,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 08:24:56,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:24:56,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:24:56,312 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:24:56,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-21 08:24:56,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 08:24:56,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:24:56,519 WARN L261 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-21 08:24:56,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:24:56,551 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 10 treesize of output 8 [2022-11-21 08:24:56,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:56,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-21 08:24:56,604 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:24:56,609 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 27 treesize of output 26 [2022-11-21 08:24:56,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:56,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:56,715 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 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-21 08:24:56,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:56,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:56,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:56,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:56,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 73 [2022-11-21 08:24:57,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:57,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:57,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:57,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:57,883 INFO L321 Elim1Store]: treesize reduction 46, result has 48.9 percent of original size [2022-11-21 08:24:57,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 98 [2022-11-21 08:24:58,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:58,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:58,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:58,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:58,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:58,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:24:58,460 INFO L321 Elim1Store]: treesize reduction 50, result has 49.5 percent of original size [2022-11-21 08:24:58,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 144 [2022-11-21 08:25:00,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:00,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:00,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:00,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:00,226 INFO L321 Elim1Store]: treesize reduction 46, result has 48.9 percent of original size [2022-11-21 08:25:00,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 113 [2022-11-21 08:25:01,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:01,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:01,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:01,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:01,135 INFO L321 Elim1Store]: treesize reduction 124, result has 17.3 percent of original size [2022-11-21 08:25:01,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 125 treesize of output 116 [2022-11-21 08:25:02,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2022-11-21 08:25:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 08:25:02,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 08:25:03,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 08:25:03,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626163991] [2022-11-21 08:25:03,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 08:25:03,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621243932] [2022-11-21 08:25:03,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621243932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 08:25:03,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 08:25:03,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-11-21 08:25:03,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582635150] [2022-11-21 08:25:03,570 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 08:25:03,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 08:25:03,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 08:25:03,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 08:25:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1888, Unknown=0, NotChecked=0, Total=2162 [2022-11-21 08:25:03,572 INFO L87 Difference]: Start difference. First operand 171 states and 191 transitions. Second operand has 35 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 30 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 08:25:07,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 08:25:07,085 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2022-11-21 08:25:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 08:25:07,086 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 30 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-21 08:25:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 08:25:07,088 INFO L225 Difference]: With dead ends: 199 [2022-11-21 08:25:07,088 INFO L226 Difference]: Without dead ends: 187 [2022-11-21 08:25:07,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=457, Invalid=3083, Unknown=0, NotChecked=0, Total=3540 [2022-11-21 08:25:07,090 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 08:25:07,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 345 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 08:25:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-21 08:25:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 181. [2022-11-21 08:25:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 154 states have (on average 1.1428571428571428) internal successors, (176), 154 states have internal predecessors, (176), 13 states have call successors, (13), 13 states have call predecessors, (13), 13 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-21 08:25:07,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 202 transitions. [2022-11-21 08:25:07,184 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 202 transitions. Word has length 47 [2022-11-21 08:25:07,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 08:25:07,184 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 202 transitions. [2022-11-21 08:25:07,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 30 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 08:25:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 202 transitions. [2022-11-21 08:25:07,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-21 08:25:07,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 08:25:07,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 08:25:07,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-21 08:25:07,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:25:07,389 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 08:25:07,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 08:25:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash -439774994, now seen corresponding path program 3 times [2022-11-21 08:25:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 08:25:07,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145803968] [2022-11-21 08:25:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 08:25:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 08:25:07,405 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 08:25:07,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785271215] [2022-11-21 08:25:07,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 08:25:07,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 08:25:07,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 08:25:07,407 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 08:25:07,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea6420a8-8ab4-4fc5-a102-fdbdafd1fc9c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-21 08:25:07,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 08:25:07,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 08:25:07,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-21 08:25:07,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 08:25:07,753 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 10 treesize of output 8 [2022-11-21 08:25:07,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:07,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-21 08:25:07,791 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 08:25:07,796 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 27 treesize of output 26 [2022-11-21 08:25:07,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:07,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-21 08:25:07,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:07,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 22 [2022-11-21 08:25:07,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:07,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-21 08:25:08,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:08,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2022-11-21 08:25:08,502 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-21 08:25:08,502 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 18 treesize of output 22 [2022-11-21 08:25:08,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:08,537 INFO L321 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-11-21 08:25:08,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2022-11-21 08:25:11,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:11,464 INFO L321 Elim1Store]: treesize reduction 66, result has 33.3 percent of original size [2022-11-21 08:25:11,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 88 [2022-11-21 08:25:11,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:11,901 INFO L321 Elim1Store]: treesize reduction 164, result has 15.5 percent of original size [2022-11-21 08:25:11,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 118 treesize of output 116 [2022-11-21 08:25:23,015 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 08:25:28,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:28,817 INFO L321 Elim1Store]: treesize reduction 110, result has 43.3 percent of original size [2022-11-21 08:25:28,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 125 treesize of output 192 [2022-11-21 08:25:30,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:30,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:30,857 INFO L321 Elim1Store]: treesize reduction 144, result has 35.4 percent of original size [2022-11-21 08:25:30,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 147 treesize of output 201 [2022-11-21 08:25:34,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:34,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 08:25:35,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 08:25:35,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 4 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 50 case distinctions, treesize of input 279 treesize of output 879 [2022-11-21 08:26:16,403 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:26:20,839 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:26:25,108 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:26:29,160 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:26:29,538 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:26:29,726 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:26:48,933 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:26:50,750 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:26:52,523 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:26:54,510 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:26:56,385 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:03,007 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:03,500 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:04,028 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:06,288 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:06,850 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:08,109 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:10,628 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:12,852 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:13,052 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:13,849 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:14,271 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:14,731 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:15,635 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:16,974 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:17,418 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:17,970 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:19,175 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:19,517 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:19,944 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:20,601 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:22,029 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:24,484 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:24,970 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:25,487 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:25,700 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:26,891 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:28,568 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:29,090 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:30,384 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:30,847 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:31,434 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:31,888 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:32,736 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:33,994 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:34,387 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:34,561 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:35,786 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:36,189 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:36,555 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:36,983 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:39,284 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:40,128 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:40,565 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:41,088 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:41,758 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:42,943 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:44,999 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:45,455 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:46,397 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:46,940 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:48,713 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:49,655 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:51,425 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:51,963 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:53,557 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:54,381 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:55,279 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:27:55,995 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:57,535 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:58,353 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:59,106 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:27:59,743 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:00,194 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:00,915 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:01,413 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:02,458 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:03,009 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:04,648 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:06,881 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:07,412 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:07,638 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:08,594 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:09,200 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:09,646 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:10,196 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:11,054 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:12,517 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:14,648 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:16,044 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:16,554 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:19,472 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:19,788 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:20,234 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:20,795 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:22,410 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:22,826 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:23,414 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:23,734 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:24,183 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:25,271 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:25,828 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:26,292 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:26,837 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:28,384 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:29,553 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:29,784 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:30,732 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:31,485 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:32,688 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:33,457 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:33,919 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:34,450 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:35,137 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:36,879 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:38,871 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:39,463 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:39,838 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:41,852 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:42,488 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:42,837 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:43,620 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:44,068 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:44,645 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:45,399 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:46,312 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:46,701 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:47,259 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:47,996 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:48,835 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:28:49,557 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:50,318 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:51,223 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:52,052 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:52,931 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:53,275 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:53,985 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:54,193 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:54,743 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:56,172 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:56,454 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:56,731 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:58,462 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:58,813 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:28:59,828 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:00,160 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:00,780 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:01,161 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:01,491 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:02,381 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:04,644 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:04,916 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:05,188 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:06,869 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:07,206 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:08,212 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:08,536 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:09,246 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:09,597 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:12,122 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:12,328 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:14,071 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:15,813 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:21,186 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:21,571 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:22,218 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:29:23,032 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:29:23,944 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:29:24,659 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:25,949 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:26,922 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:27,554 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:30,091 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:35,030 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:36,555 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:37,561 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:40,423 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:41,984 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:42,980 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:43,670 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:44,459 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:44,926 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:29:48,631 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:51,001 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:51,432 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:52,217 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:52,680 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:29:53,270 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:55,435 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:57,129 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:29:59,685 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:00,254 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:01,018 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:01,695 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:02,483 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:02,932 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:04,273 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:06,127 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:08,469 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:09,597 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:10,039 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:10,626 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:11,444 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:13,560 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:17,025 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:17,984 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:18,790 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:19,911 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:20,304 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:20,893 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:21,631 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:22,487 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:23,204 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:24,291 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:25,141 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:25,697 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:27,948 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:28,400 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:28,863 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:29,456 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:31,265 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:31,767 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:32,442 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:33,252 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:33,716 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:35,204 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:35,910 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:36,429 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:36,889 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:37,465 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:38,362 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:38,816 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:40,078 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:41,267 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:42,336 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:42,716 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:43,160 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:43,863 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:44,052 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:44,657 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:45,896 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:47,969 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:50,021 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:51,018 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:51,837 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:52,344 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:30:52,992 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:54,321 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:57,045 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:58,912 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:30:59,896 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:00,579 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:01,376 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:01,853 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-11-21 08:31:08,059 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:18,339 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:18,614 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:19,021 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:21,027 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:24,298 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:24,884 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:29,317 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:32,360 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:35,299 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:35,748 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:39,498 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:39,830 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:40,165 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:41,734 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:44,432 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-21 08:31:44,952 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.