./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f1f34940ecf685c2c1201858b264ccb53eb3034d3cb9952a1b49bb437c42dde1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 04:35:47,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 04:35:47,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 04:35:47,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 04:35:47,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 04:35:47,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 04:35:47,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 04:35:47,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 04:35:47,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 04:35:47,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 04:35:47,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 04:35:47,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 04:35:47,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 04:35:47,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 04:35:47,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 04:35:47,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 04:35:47,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 04:35:47,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 04:35:47,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 04:35:47,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 04:35:47,917 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 04:35:47,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 04:35:47,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 04:35:47,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 04:35:47,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 04:35:47,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 04:35:47,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 04:35:47,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 04:35:47,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 04:35:47,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 04:35:47,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 04:35:47,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 04:35:47,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 04:35:47,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 04:35:47,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 04:35:47,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 04:35:47,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 04:35:47,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 04:35:47,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 04:35:47,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 04:35:47,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 04:35:47,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 04:35:47,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 04:35:47,970 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 04:35:47,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 04:35:47,971 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 04:35:47,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 04:35:47,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 04:35:47,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 04:35:47,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 04:35:47,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 04:35:47,974 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 04:35:47,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 04:35:47,975 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 04:35:47,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 04:35:47,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 04:35:47,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 04:35:47,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 04:35:47,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 04:35:47,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 04:35:47,976 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 04:35:47,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 04:35:47,977 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 04:35:47,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 04:35:47,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 04:35:47,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 04:35:47,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 04:35:47,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 04:35:47,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 04:35:47,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 04:35:47,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 04:35:47,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 04:35:47,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 04:35:47,980 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 04:35:47,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 04:35:47,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 04:35:47,980 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1f34940ecf685c2c1201858b264ccb53eb3034d3cb9952a1b49bb437c42dde1 [2022-07-20 04:35:48,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 04:35:48,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 04:35:48,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 04:35:48,205 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 04:35:48,206 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 04:35:48,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i [2022-07-20 04:35:48,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65861c7a/2ba67d1022fb49319f69657d60901c38/FLAGb69f2641c [2022-07-20 04:35:48,739 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 04:35:48,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i [2022-07-20 04:35:48,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65861c7a/2ba67d1022fb49319f69657d60901c38/FLAGb69f2641c [2022-07-20 04:35:48,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65861c7a/2ba67d1022fb49319f69657d60901c38 [2022-07-20 04:35:48,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 04:35:48,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 04:35:48,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 04:35:48,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 04:35:48,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 04:35:48,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:35:48" (1/1) ... [2022-07-20 04:35:48,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5462bb74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:48, skipping insertion in model container [2022-07-20 04:35:48,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:35:48" (1/1) ... [2022-07-20 04:35:48,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 04:35:48,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 04:35:49,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i[33021,33034] [2022-07-20 04:35:49,226 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i[44590,44603] [2022-07-20 04:35:49,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 04:35:49,249 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 04:35:49,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i[33021,33034] [2022-07-20 04:35:49,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i[44590,44603] [2022-07-20 04:35:49,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 04:35:49,364 INFO L208 MainTranslator]: Completed translation [2022-07-20 04:35:49,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49 WrapperNode [2022-07-20 04:35:49,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 04:35:49,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 04:35:49,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 04:35:49,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 04:35:49,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49" (1/1) ... [2022-07-20 04:35:49,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49" (1/1) ... [2022-07-20 04:35:49,472 INFO L137 Inliner]: procedures = 177, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1026 [2022-07-20 04:35:49,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 04:35:49,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 04:35:49,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 04:35:49,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 04:35:49,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49" (1/1) ... [2022-07-20 04:35:49,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49" (1/1) ... [2022-07-20 04:35:49,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49" (1/1) ... [2022-07-20 04:35:49,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49" (1/1) ... [2022-07-20 04:35:49,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49" (1/1) ... [2022-07-20 04:35:49,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49" (1/1) ... [2022-07-20 04:35:49,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49" (1/1) ... [2022-07-20 04:35:49,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 04:35:49,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 04:35:49,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 04:35:49,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 04:35:49,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49" (1/1) ... [2022-07-20 04:35:49,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 04:35:49,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:35:49,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 04:35:49,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 04:35:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 04:35:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-20 04:35:49,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-20 04:35:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 04:35:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 04:35:49,614 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 04:35:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 04:35:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 04:35:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 04:35:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 04:35:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-20 04:35:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 04:35:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 04:35:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 04:35:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 04:35:49,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 04:35:49,771 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 04:35:49,772 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 04:35:50,659 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 04:35:50,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 04:35:50,669 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2022-07-20 04:35:50,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:35:50 BoogieIcfgContainer [2022-07-20 04:35:50,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 04:35:50,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 04:35:50,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 04:35:50,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 04:35:50,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:35:48" (1/3) ... [2022-07-20 04:35:50,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bac5b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:35:50, skipping insertion in model container [2022-07-20 04:35:50,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:35:49" (2/3) ... [2022-07-20 04:35:50,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bac5b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:35:50, skipping insertion in model container [2022-07-20 04:35:50,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:35:50" (3/3) ... [2022-07-20 04:35:50,679 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test3-1.i [2022-07-20 04:35:50,689 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 04:35:50,689 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-20 04:35:50,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 04:35:50,756 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@550b7000, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6d9dc0b6 [2022-07-20 04:35:50,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-20 04:35:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 189 states have (on average 1.693121693121693) internal successors, (320), 196 states have internal predecessors, (320), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 04:35:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-20 04:35:50,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:35:50,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:35:50,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:35:50,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:35:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash -858857507, now seen corresponding path program 1 times [2022-07-20 04:35:50,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:35:50,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312387124] [2022-07-20 04:35:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:50,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:35:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:35:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:35:50,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:35:50,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312387124] [2022-07-20 04:35:50,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312387124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:35:50,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:35:50,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 04:35:50,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079120161] [2022-07-20 04:35:50,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:35:50,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-20 04:35:50,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:35:50,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-20 04:35:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 04:35:50,944 INFO L87 Difference]: Start difference. First operand has 202 states, 189 states have (on average 1.693121693121693) internal successors, (320), 196 states have internal predecessors, (320), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 04:35:50,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:35:50,997 INFO L93 Difference]: Finished difference Result 402 states and 675 transitions. [2022-07-20 04:35:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-20 04:35:50,998 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-20 04:35:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:35:51,009 INFO L225 Difference]: With dead ends: 402 [2022-07-20 04:35:51,009 INFO L226 Difference]: Without dead ends: 198 [2022-07-20 04:35:51,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 04:35:51,016 INFO L413 NwaCegarLoop]: 267 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, 267 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 [2022-07-20 04:35:51,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 04:35:51,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-20 04:35:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-07-20 04:35:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 186 states have (on average 1.3279569892473118) internal successors, (247), 192 states have internal predecessors, (247), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 04:35:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2022-07-20 04:35:51,079 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 9 [2022-07-20 04:35:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:35:51,080 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2022-07-20 04:35:51,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 04:35:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2022-07-20 04:35:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-20 04:35:51,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:35:51,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:35:51,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 04:35:51,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:35:51,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:35:51,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1463774514, now seen corresponding path program 1 times [2022-07-20 04:35:51,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:35:51,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067489953] [2022-07-20 04:35:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:51,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:35:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:35:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:35:51,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:35:51,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067489953] [2022-07-20 04:35:51,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067489953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:35:51,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:35:51,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 04:35:51,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317574322] [2022-07-20 04:35:51,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:35:51,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 04:35:51,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:35:51,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 04:35:51,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 04:35:51,145 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 04:35:51,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:35:51,413 INFO L93 Difference]: Finished difference Result 431 states and 581 transitions. [2022-07-20 04:35:51,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 04:35:51,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-20 04:35:51,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:35:51,416 INFO L225 Difference]: With dead ends: 431 [2022-07-20 04:35:51,416 INFO L226 Difference]: Without dead ends: 327 [2022-07-20 04:35:51,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 04:35:51,418 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 158 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 04:35:51,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 653 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 04:35:51,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-20 04:35:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 200. [2022-07-20 04:35:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 188 states have (on average 1.324468085106383) internal successors, (249), 194 states have internal predecessors, (249), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 04:35:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 265 transitions. [2022-07-20 04:35:51,429 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 265 transitions. Word has length 14 [2022-07-20 04:35:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:35:51,429 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 265 transitions. [2022-07-20 04:35:51,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 04:35:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 265 transitions. [2022-07-20 04:35:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-20 04:35:51,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:35:51,431 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:35:51,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 04:35:51,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:35:51,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:35:51,432 INFO L85 PathProgramCache]: Analyzing trace with hash -921461318, now seen corresponding path program 1 times [2022-07-20 04:35:51,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:35:51,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15043979] [2022-07-20 04:35:51,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:51,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:35:51,538 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:35:51,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920283312] [2022-07-20 04:35:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:51,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:51,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:35:51,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 04:35:51,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 04:35:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:35:52,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 1599 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 04:35:52,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:35:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:35:52,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:35:52,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:35:52,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15043979] [2022-07-20 04:35:52,084 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:35:52,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920283312] [2022-07-20 04:35:52,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920283312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:35:52,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:35:52,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 04:35:52,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154837380] [2022-07-20 04:35:52,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:35:52,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 04:35:52,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:35:52,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 04:35:52,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 04:35:52,087 INFO L87 Difference]: Start difference. First operand 200 states and 265 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 04:35:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:35:52,134 INFO L93 Difference]: Finished difference Result 417 states and 557 transitions. [2022-07-20 04:35:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 04:35:52,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-20 04:35:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:35:52,135 INFO L225 Difference]: With dead ends: 417 [2022-07-20 04:35:52,135 INFO L226 Difference]: Without dead ends: 221 [2022-07-20 04:35:52,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 04:35:52,137 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 9 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 04:35:52,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 471 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 04:35:52,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-20 04:35:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2022-07-20 04:35:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 208 states have (on average 1.2932692307692308) internal successors, (269), 214 states have internal predecessors, (269), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 04:35:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 285 transitions. [2022-07-20 04:35:52,164 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 285 transitions. Word has length 66 [2022-07-20 04:35:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:35:52,165 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 285 transitions. [2022-07-20 04:35:52,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 04:35:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 285 transitions. [2022-07-20 04:35:52,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-20 04:35:52,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:35:52,171 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:35:52,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 04:35:52,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:52,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:35:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:35:52,394 INFO L85 PathProgramCache]: Analyzing trace with hash -568372936, now seen corresponding path program 1 times [2022-07-20 04:35:52,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:35:52,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964603189] [2022-07-20 04:35:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:52,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:35:52,472 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:35:52,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120070779] [2022-07-20 04:35:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:52,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:52,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:35:52,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 04:35:52,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 04:35:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:35:53,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 04:35:53,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:35:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:35:53,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:35:53,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:35:53,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964603189] [2022-07-20 04:35:53,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:35:53,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120070779] [2022-07-20 04:35:53,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120070779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:35:53,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:35:53,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 04:35:53,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560981531] [2022-07-20 04:35:53,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:35:53,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 04:35:53,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:35:53,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 04:35:53,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 04:35:53,155 INFO L87 Difference]: Start difference. First operand 220 states and 285 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 04:35:53,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:35:53,213 INFO L93 Difference]: Finished difference Result 428 states and 558 transitions. [2022-07-20 04:35:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 04:35:53,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-20 04:35:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:35:53,215 INFO L225 Difference]: With dead ends: 428 [2022-07-20 04:35:53,215 INFO L226 Difference]: Without dead ends: 212 [2022-07-20 04:35:53,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 04:35:53,218 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 226 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 04:35:53,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 499 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 04:35:53,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-20 04:35:53,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2022-07-20 04:35:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 194 states have (on average 1.2783505154639174) internal successors, (248), 200 states have internal predecessors, (248), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 04:35:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 264 transitions. [2022-07-20 04:35:53,229 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 264 transitions. Word has length 66 [2022-07-20 04:35:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:35:53,229 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 264 transitions. [2022-07-20 04:35:53,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 04:35:53,229 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 264 transitions. [2022-07-20 04:35:53,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-20 04:35:53,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:35:53,231 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:35:53,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 04:35:53,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-20 04:35:53,453 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:35:53,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:35:53,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1138787002, now seen corresponding path program 1 times [2022-07-20 04:35:53,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:35:53,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706791771] [2022-07-20 04:35:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:53,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:35:53,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:35:53,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932489435] [2022-07-20 04:35:53,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:53,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:53,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:35:53,535 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 04:35:53,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 04:35:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:35:54,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1587 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 04:35:54,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:35:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:35:54,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:35:54,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:35:54,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706791771] [2022-07-20 04:35:54,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:35:54,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932489435] [2022-07-20 04:35:54,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932489435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:35:54,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:35:54,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 04:35:54,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429828636] [2022-07-20 04:35:54,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:35:54,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 04:35:54,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:35:54,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 04:35:54,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 04:35:54,205 INFO L87 Difference]: Start difference. First operand 206 states and 264 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 04:35:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:35:54,263 INFO L93 Difference]: Finished difference Result 532 states and 686 transitions. [2022-07-20 04:35:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 04:35:54,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-20 04:35:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:35:54,265 INFO L225 Difference]: With dead ends: 532 [2022-07-20 04:35:54,265 INFO L226 Difference]: Without dead ends: 330 [2022-07-20 04:35:54,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 04:35:54,266 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 113 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 04:35:54,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 550 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 04:35:54,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-07-20 04:35:54,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 312. [2022-07-20 04:35:54,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 300 states have (on average 1.27) internal successors, (381), 306 states have internal predecessors, (381), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 04:35:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 397 transitions. [2022-07-20 04:35:54,273 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 397 transitions. Word has length 66 [2022-07-20 04:35:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:35:54,273 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 397 transitions. [2022-07-20 04:35:54,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 04:35:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 397 transitions. [2022-07-20 04:35:54,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-20 04:35:54,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:35:54,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:35:54,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 04:35:54,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:54,496 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:35:54,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:35:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1268606516, now seen corresponding path program 1 times [2022-07-20 04:35:54,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:35:54,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430487882] [2022-07-20 04:35:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:54,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:35:54,535 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:35:54,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110987704] [2022-07-20 04:35:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:54,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:54,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:35:54,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 04:35:54,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 04:35:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:35:55,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 04:35:55,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:35:55,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-20 04:35:55,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2022-07-20 04:35:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-20 04:35:55,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:35:55,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:35:55,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430487882] [2022-07-20 04:35:55,091 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:35:55,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110987704] [2022-07-20 04:35:55,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110987704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:35:55,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:35:55,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 04:35:55,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057672017] [2022-07-20 04:35:55,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:35:55,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 04:35:55,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:35:55,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 04:35:55,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 04:35:55,094 INFO L87 Difference]: Start difference. First operand 312 states and 397 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 04:35:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:35:55,359 INFO L93 Difference]: Finished difference Result 427 states and 554 transitions. [2022-07-20 04:35:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 04:35:55,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2022-07-20 04:35:55,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:35:55,361 INFO L225 Difference]: With dead ends: 427 [2022-07-20 04:35:55,361 INFO L226 Difference]: Without dead ends: 406 [2022-07-20 04:35:55,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 04:35:55,362 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 102 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 04:35:55,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 674 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 04:35:55,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-07-20 04:35:55,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 314. [2022-07-20 04:35:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 302 states have (on average 1.2682119205298013) internal successors, (383), 308 states have internal predecessors, (383), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 04:35:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 399 transitions. [2022-07-20 04:35:55,370 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 399 transitions. Word has length 81 [2022-07-20 04:35:55,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:35:55,371 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 399 transitions. [2022-07-20 04:35:55,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 04:35:55,371 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 399 transitions. [2022-07-20 04:35:55,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-20 04:35:55,372 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:35:55,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:35:55,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-20 04:35:55,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:55,585 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:35:55,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:35:55,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1512236935, now seen corresponding path program 1 times [2022-07-20 04:35:55,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:35:55,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993712055] [2022-07-20 04:35:55,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:55,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:35:55,647 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:35:55,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656467083] [2022-07-20 04:35:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:55,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:55,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:35:55,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 04:35:55,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-20 04:35:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:35:56,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 04:35:56,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:35:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-20 04:35:56,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:35:56,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:35:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993712055] [2022-07-20 04:35:56,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:35:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656467083] [2022-07-20 04:35:56,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656467083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:35:56,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:35:56,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 04:35:56,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271589095] [2022-07-20 04:35:56,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:35:56,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 04:35:56,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:35:56,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 04:35:56,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 04:35:56,163 INFO L87 Difference]: Start difference. First operand 314 states and 399 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 04:35:56,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:35:56,208 INFO L93 Difference]: Finished difference Result 521 states and 685 transitions. [2022-07-20 04:35:56,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 04:35:56,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-07-20 04:35:56,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:35:56,210 INFO L225 Difference]: With dead ends: 521 [2022-07-20 04:35:56,210 INFO L226 Difference]: Without dead ends: 356 [2022-07-20 04:35:56,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 04:35:56,211 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 8 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 04:35:56,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 459 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 04:35:56,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-07-20 04:35:56,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 354. [2022-07-20 04:35:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 342 states have (on average 1.236842105263158) internal successors, (423), 348 states have internal predecessors, (423), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 04:35:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 439 transitions. [2022-07-20 04:35:56,219 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 439 transitions. Word has length 111 [2022-07-20 04:35:56,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:35:56,219 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 439 transitions. [2022-07-20 04:35:56,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 04:35:56,219 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 439 transitions. [2022-07-20 04:35:56,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-20 04:35:56,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:35:56,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:35:56,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-20 04:35:56,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:56,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:35:56,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:35:56,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1771613111, now seen corresponding path program 1 times [2022-07-20 04:35:56,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:35:56,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876831705] [2022-07-20 04:35:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:56,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:35:56,524 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:35:56,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364035150] [2022-07-20 04:35:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:56,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:56,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:35:56,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 04:35:56,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-20 04:35:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:35:57,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 04:35:57,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:35:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-20 04:35:57,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:35:57,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:35:57,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876831705] [2022-07-20 04:35:57,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:35:57,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364035150] [2022-07-20 04:35:57,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364035150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:35:57,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:35:57,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 04:35:57,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313311524] [2022-07-20 04:35:57,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:35:57,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 04:35:57,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:35:57,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 04:35:57,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 04:35:57,068 INFO L87 Difference]: Start difference. First operand 354 states and 439 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 04:35:57,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:35:57,122 INFO L93 Difference]: Finished difference Result 536 states and 680 transitions. [2022-07-20 04:35:57,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 04:35:57,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-07-20 04:35:57,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:35:57,123 INFO L225 Difference]: With dead ends: 536 [2022-07-20 04:35:57,123 INFO L226 Difference]: Without dead ends: 331 [2022-07-20 04:35:57,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 04:35:57,124 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 120 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 04:35:57,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 586 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 04:35:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-07-20 04:35:57,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2022-07-20 04:35:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 314 states have (on average 1.213375796178344) internal successors, (381), 320 states have internal predecessors, (381), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 04:35:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2022-07-20 04:35:57,132 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 111 [2022-07-20 04:35:57,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:35:57,132 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2022-07-20 04:35:57,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 04:35:57,132 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2022-07-20 04:35:57,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-20 04:35:57,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:35:57,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:35:57,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-20 04:35:57,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:57,354 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:35:57,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:35:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1365745725, now seen corresponding path program 1 times [2022-07-20 04:35:57,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:35:57,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037672404] [2022-07-20 04:35:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:57,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:35:57,390 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:35:57,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711339571] [2022-07-20 04:35:57,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:57,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:57,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:35:57,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 04:35:57,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-20 04:35:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:35:57,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 04:35:57,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:35:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 04:35:58,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:35:58,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:35:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037672404] [2022-07-20 04:35:58,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:35:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711339571] [2022-07-20 04:35:58,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711339571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:35:58,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:35:58,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 04:35:58,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579787608] [2022-07-20 04:35:58,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:35:58,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 04:35:58,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:35:58,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 04:35:58,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 04:35:58,021 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 04:35:58,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:35:58,439 INFO L93 Difference]: Finished difference Result 720 states and 898 transitions. [2022-07-20 04:35:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 04:35:58,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-07-20 04:35:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:35:58,441 INFO L225 Difference]: With dead ends: 720 [2022-07-20 04:35:58,441 INFO L226 Difference]: Without dead ends: 442 [2022-07-20 04:35:58,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 04:35:58,442 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 446 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 04:35:58,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 508 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 04:35:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-07-20 04:35:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 410. [2022-07-20 04:35:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 398 states have (on average 1.2185929648241205) internal successors, (485), 404 states have internal predecessors, (485), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 04:35:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 501 transitions. [2022-07-20 04:35:58,454 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 501 transitions. Word has length 111 [2022-07-20 04:35:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:35:58,454 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 501 transitions. [2022-07-20 04:35:58,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 04:35:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 501 transitions. [2022-07-20 04:35:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-20 04:35:58,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:35:58,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:35:58,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-20 04:35:58,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:58,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:35:58,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:35:58,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1916658931, now seen corresponding path program 1 times [2022-07-20 04:35:58,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:35:58,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548913522] [2022-07-20 04:35:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:35:58,699 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:35:58,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078204804] [2022-07-20 04:35:58,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:35:58,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:35:58,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:35:58,701 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 04:35:58,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-20 04:36:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:36:05,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 203 conjunts are in the unsatisfiable core [2022-07-20 04:36:05,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:36:05,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2022-07-20 04:36:05,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-20 04:36:05,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 04:36:05,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 14 [2022-07-20 04:36:05,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 04:36:05,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-20 04:36:05,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 04:36:05,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-20 04:36:05,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 04:36:05,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-20 04:36:05,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 04:36:05,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-20 04:36:05,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-20 04:36:05,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 04:36:05,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 04:36:05,864 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-20 04:36:05,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 34 treesize of output 41 [2022-07-20 04:36:05,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-07-20 04:36:05,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 13 [2022-07-20 04:36:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:36:06,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:36:06,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:36:06,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548913522] [2022-07-20 04:36:06,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:36:06,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078204804] [2022-07-20 04:36:06,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078204804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:36:06,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:36:06,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 04:36:06,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895922473] [2022-07-20 04:36:06,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:36:06,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 04:36:06,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:36:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 04:36:06,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-20 04:36:06,087 INFO L87 Difference]: Start difference. First operand 410 states and 501 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 04:36:06,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:36:06,436 INFO L93 Difference]: Finished difference Result 773 states and 950 transitions. [2022-07-20 04:36:06,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 04:36:06,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 118 [2022-07-20 04:36:06,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:36:06,439 INFO L225 Difference]: With dead ends: 773 [2022-07-20 04:36:06,439 INFO L226 Difference]: Without dead ends: 412 [2022-07-20 04:36:06,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-20 04:36:06,440 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 43 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 04:36:06,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1041 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 238 Invalid, 0 Unknown, 197 Unchecked, 0.3s Time] [2022-07-20 04:36:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-07-20 04:36:06,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2022-07-20 04:36:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 400 states have (on average 1.2175) internal successors, (487), 405 states have internal predecessors, (487), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 04:36:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 503 transitions. [2022-07-20 04:36:06,450 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 503 transitions. Word has length 118 [2022-07-20 04:36:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:36:06,450 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 503 transitions. [2022-07-20 04:36:06,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 04:36:06,450 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 503 transitions. [2022-07-20 04:36:06,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-20 04:36:06,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:36:06,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:36:06,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-20 04:36:06,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-20 04:36:06,673 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:36:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:36:06,674 INFO L85 PathProgramCache]: Analyzing trace with hash 870640575, now seen corresponding path program 1 times [2022-07-20 04:36:06,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:36:06,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84849705] [2022-07-20 04:36:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:36:06,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:36:06,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:36:06,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003304177] [2022-07-20 04:36:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:36:06,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:36:06,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:36:06,750 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 04:36:06,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-20 04:36:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:36:11,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 04:36:11,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:36:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 04:36:11,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 04:36:12,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 04:36:12,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:36:12,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84849705] [2022-07-20 04:36:12,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:36:12,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003304177] [2022-07-20 04:36:12,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003304177] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 04:36:12,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 04:36:12,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-07-20 04:36:12,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500419420] [2022-07-20 04:36:12,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:36:12,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 04:36:12,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:36:12,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 04:36:12,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-20 04:36:12,021 INFO L87 Difference]: Start difference. First operand 412 states and 503 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 04:36:12,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:36:12,045 INFO L93 Difference]: Finished difference Result 772 states and 950 transitions. [2022-07-20 04:36:12,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 04:36:12,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 119 [2022-07-20 04:36:12,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:36:12,049 INFO L225 Difference]: With dead ends: 772 [2022-07-20 04:36:12,049 INFO L226 Difference]: Without dead ends: 416 [2022-07-20 04:36:12,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-20 04:36:12,050 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 6 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 04:36:12,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 487 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 04:36:12,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-07-20 04:36:12,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2022-07-20 04:36:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 403 states have (on average 1.2208436724565757) internal successors, (492), 409 states have internal predecessors, (492), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-20 04:36:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 509 transitions. [2022-07-20 04:36:12,063 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 509 transitions. Word has length 119 [2022-07-20 04:36:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:36:12,063 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 509 transitions. [2022-07-20 04:36:12,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-20 04:36:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 509 transitions. [2022-07-20 04:36:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-20 04:36:12,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:36:12,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:36:12,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-20 04:36:12,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:36:12,287 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:36:12,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:36:12,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1353137643, now seen corresponding path program 2 times [2022-07-20 04:36:12,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:36:12,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796189298] [2022-07-20 04:36:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:36:12,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:36:12,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:36:12,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143727760] [2022-07-20 04:36:12,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 04:36:12,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:36:12,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:36:12,335 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 04:36:12,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-20 04:37:11,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 04:37:11,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 04:37:11,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-20 04:37:11,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:37:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 04:37:11,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 04:37:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 04:37:11,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:37:11,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796189298] [2022-07-20 04:37:11,848 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:37:11,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143727760] [2022-07-20 04:37:11,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143727760] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 04:37:11,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 04:37:11,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-20 04:37:11,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188001047] [2022-07-20 04:37:11,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 04:37:11,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 04:37:11,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:37:11,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 04:37:11,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-20 04:37:11,850 INFO L87 Difference]: Start difference. First operand 416 states and 509 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 04:37:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:37:11,964 INFO L93 Difference]: Finished difference Result 790 states and 973 transitions. [2022-07-20 04:37:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 04:37:11,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-07-20 04:37:11,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:37:11,967 INFO L225 Difference]: With dead ends: 790 [2022-07-20 04:37:11,967 INFO L226 Difference]: Without dead ends: 424 [2022-07-20 04:37:11,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-07-20 04:37:11,968 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 12 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 04:37:11,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1221 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 04:37:11,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-07-20 04:37:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 422. [2022-07-20 04:37:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 408 states have (on average 1.2205882352941178) internal successors, (498), 415 states have internal predecessors, (498), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-20 04:37:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 515 transitions. [2022-07-20 04:37:11,978 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 515 transitions. Word has length 120 [2022-07-20 04:37:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:37:11,978 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 515 transitions. [2022-07-20 04:37:11,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 04:37:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 515 transitions. [2022-07-20 04:37:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-20 04:37:11,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:37:11,980 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:37:12,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-20 04:37:12,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-20 04:37:12,212 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:37:12,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:37:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash -330840653, now seen corresponding path program 3 times [2022-07-20 04:37:12,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:37:12,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428569634] [2022-07-20 04:37:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:37:12,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:37:12,323 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:37:12,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387455022] [2022-07-20 04:37:12,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-20 04:37:12,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:37:12,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:37:12,334 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 04:37:12,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process