./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_SAX_test1-1.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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 05:37:10,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 05:37:10,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 05:37:10,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 05:37:10,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 05:37:10,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 05:37:10,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 05:37:10,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 05:37:10,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 05:37:10,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 05:37:10,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 05:37:10,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 05:37:10,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 05:37:10,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 05:37:10,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 05:37:10,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 05:37:10,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 05:37:10,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 05:37:10,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 05:37:10,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 05:37:10,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 05:37:10,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 05:37:10,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 05:37:10,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 05:37:10,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 05:37:10,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 05:37:10,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 05:37:10,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 05:37:10,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 05:37:10,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 05:37:10,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 05:37:10,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 05:37:10,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 05:37:10,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 05:37:10,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 05:37:10,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 05:37:10,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 05:37:10,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 05:37:10,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 05:37:10,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 05:37:10,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 05:37:10,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 05:37:11,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 05:37:11,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 05:37:11,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 05:37:11,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 05:37:11,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 05:37:11,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 05:37:11,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 05:37:11,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 05:37:11,022 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 05:37:11,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 05:37:11,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 05:37:11,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 05:37:11,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 05:37:11,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 05:37:11,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 05:37:11,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 05:37:11,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 05:37:11,024 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 05:37:11,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 05:37:11,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 05:37:11,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 05:37:11,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 05:37:11,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 05:37:11,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 05:37:11,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:37:11,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 05:37:11,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 05:37:11,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 05:37:11,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 05:37:11,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 05:37:11,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 05:37:11,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 05:37:11,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 05:37:11,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 05:37:11,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2021-12-16 05:37:11,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 05:37:11,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 05:37:11,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 05:37:11,273 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 05:37:11,273 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 05:37:11,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-12-16 05:37:11,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2140a21f8/d673e263dfed4f1f807c621849bc8af0/FLAG7b05366be [2021-12-16 05:37:11,798 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 05:37:11,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-12-16 05:37:11,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2140a21f8/d673e263dfed4f1f807c621849bc8af0/FLAG7b05366be [2021-12-16 05:37:12,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2140a21f8/d673e263dfed4f1f807c621849bc8af0 [2021-12-16 05:37:12,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 05:37:12,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 05:37:12,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 05:37:12,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 05:37:12,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 05:37:12,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@430d0a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12, skipping insertion in model container [2021-12-16 05:37:12,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 05:37:12,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 05:37:12,395 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_SAX_test1-1.i[33021,33034] [2021-12-16 05:37:12,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:37:12,485 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 05:37:12,508 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_SAX_test1-1.i[33021,33034] [2021-12-16 05:37:12,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:37:12,553 INFO L208 MainTranslator]: Completed translation [2021-12-16 05:37:12,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12 WrapperNode [2021-12-16 05:37:12,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 05:37:12,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 05:37:12,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 05:37:12,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 05:37:12,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,637 INFO L137 Inliner]: procedures = 177, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 621 [2021-12-16 05:37:12,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 05:37:12,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 05:37:12,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 05:37:12,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 05:37:12,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 05:37:12,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 05:37:12,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 05:37:12,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 05:37:12,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12" (1/1) ... [2021-12-16 05:37:12,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:37:12,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:37:12,769 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) [2021-12-16 05:37:12,774 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 [2021-12-16 05:37:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 05:37:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 05:37:12,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 05:37:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 05:37:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 05:37:12,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 05:37:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 05:37:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 05:37:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 05:37:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 05:37:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 05:37:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 05:37:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 05:37:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 05:37:12,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 05:37:12,996 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 05:37:12,997 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 05:37:13,605 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 05:37:13,613 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 05:37:13,614 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-12-16 05:37:13,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:37:13 BoogieIcfgContainer [2021-12-16 05:37:13,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 05:37:13,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 05:37:13,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 05:37:13,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 05:37:13,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:37:12" (1/3) ... [2021-12-16 05:37:13,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b130399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:37:13, skipping insertion in model container [2021-12-16 05:37:13,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:37:12" (2/3) ... [2021-12-16 05:37:13,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b130399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:37:13, skipping insertion in model container [2021-12-16 05:37:13,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:37:13" (3/3) ... [2021-12-16 05:37:13,622 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2021-12-16 05:37:13,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 05:37:13,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 05:37:13,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 05:37:13,678 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 05:37:13,678 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 05:37:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 122 states have internal predecessors, (185), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 05:37:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-16 05:37:13,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:37:13,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:37:13,710 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:37:13,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:37:13,721 INFO L85 PathProgramCache]: Analyzing trace with hash -388532060, now seen corresponding path program 1 times [2021-12-16 05:37:13,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:37:13,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136588032] [2021-12-16 05:37:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:37:13,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:37:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:37:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:37:13,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:37:13,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136588032] [2021-12-16 05:37:13,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136588032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:37:13,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:37:13,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 05:37:13,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774423789] [2021-12-16 05:37:13,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:37:13,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:37:13,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:37:13,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:37:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:37:13,939 INFO L87 Difference]: Start difference. First operand has 128 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 122 states have internal predecessors, (185), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-16 05:37:14,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:37:14,073 INFO L93 Difference]: Finished difference Result 341 states and 579 transitions. [2021-12-16 05:37:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:37:14,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2021-12-16 05:37:14,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:37:14,094 INFO L225 Difference]: With dead ends: 341 [2021-12-16 05:37:14,097 INFO L226 Difference]: Without dead ends: 211 [2021-12-16 05:37:14,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:37:14,105 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 107 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:37:14,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 345 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:37:14,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-16 05:37:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 125. [2021-12-16 05:37:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 109 states have (on average 1.3394495412844036) internal successors, (146), 119 states have internal predecessors, (146), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 05:37:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 172 transitions. [2021-12-16 05:37:14,189 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 172 transitions. Word has length 10 [2021-12-16 05:37:14,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:37:14,189 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 172 transitions. [2021-12-16 05:37:14,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-16 05:37:14,190 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 172 transitions. [2021-12-16 05:37:14,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-16 05:37:14,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:37:14,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:37:14,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 05:37:14,197 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:37:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:37:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1583744873, now seen corresponding path program 1 times [2021-12-16 05:37:14,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:37:14,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842032894] [2021-12-16 05:37:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:37:14,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:37:14,347 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:37:14,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622407411] [2021-12-16 05:37:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:37:14,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:37:14,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:37:14,349 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) [2021-12-16 05:37:14,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 05:37:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:37:14,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 05:37:14,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:37:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:37:15,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:37:15,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:37:15,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842032894] [2021-12-16 05:37:15,049 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 05:37:15,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622407411] [2021-12-16 05:37:15,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622407411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:37:15,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:37:15,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 05:37:15,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919639717] [2021-12-16 05:37:15,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:37:15,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:37:15,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:37:15,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:37:15,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:37:15,061 INFO L87 Difference]: Start difference. First operand 125 states and 172 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-12-16 05:37:15,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:37:15,150 INFO L93 Difference]: Finished difference Result 268 states and 372 transitions. [2021-12-16 05:37:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:37:15,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 61 [2021-12-16 05:37:15,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:37:15,152 INFO L225 Difference]: With dead ends: 268 [2021-12-16 05:37:15,152 INFO L226 Difference]: Without dead ends: 146 [2021-12-16 05:37:15,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:37:15,154 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 9 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:37:15,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 287 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:37:15,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-16 05:37:15,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2021-12-16 05:37:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 129 states have (on average 1.2868217054263567) internal successors, (166), 139 states have internal predecessors, (166), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 05:37:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 192 transitions. [2021-12-16 05:37:15,162 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 192 transitions. Word has length 61 [2021-12-16 05:37:15,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:37:15,162 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 192 transitions. [2021-12-16 05:37:15,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-12-16 05:37:15,163 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 192 transitions. [2021-12-16 05:37:15,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-16 05:37:15,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:37:15,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:37:15,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 05:37:15,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:37:15,384 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:37:15,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:37:15,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1230656491, now seen corresponding path program 1 times [2021-12-16 05:37:15,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:37:15,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916286995] [2021-12-16 05:37:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:37:15,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:37:15,487 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:37:15,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500421598] [2021-12-16 05:37:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:37:15,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:37:15,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:37:15,498 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) [2021-12-16 05:37:15,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 05:37:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:37:15,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 05:37:15,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:37:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:37:16,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:37:16,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:37:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916286995] [2021-12-16 05:37:16,088 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 05:37:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500421598] [2021-12-16 05:37:16,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500421598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:37:16,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:37:16,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:37:16,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880810186] [2021-12-16 05:37:16,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:37:16,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:37:16,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:37:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:37:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:37:16,090 INFO L87 Difference]: Start difference. First operand 145 states and 192 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-12-16 05:37:16,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:37:16,150 INFO L93 Difference]: Finished difference Result 279 states and 373 transitions. [2021-12-16 05:37:16,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:37:16,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 61 [2021-12-16 05:37:16,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:37:16,152 INFO L225 Difference]: With dead ends: 279 [2021-12-16 05:37:16,152 INFO L226 Difference]: Without dead ends: 137 [2021-12-16 05:37:16,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:37:16,157 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 124 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 317 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 [2021-12-16 05:37:16,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 317 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:37:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-16 05:37:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2021-12-16 05:37:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 115 states have (on average 1.2608695652173914) internal successors, (145), 125 states have internal predecessors, (145), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-16 05:37:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 171 transitions. [2021-12-16 05:37:16,177 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 171 transitions. Word has length 61 [2021-12-16 05:37:16,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:37:16,178 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 171 transitions. [2021-12-16 05:37:16,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-12-16 05:37:16,179 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 171 transitions. [2021-12-16 05:37:16,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-16 05:37:16,182 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:37:16,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:37:16,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 05:37:16,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-16 05:37:16,399 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:37:16,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:37:16,400 INFO L85 PathProgramCache]: Analyzing trace with hash -758509789, now seen corresponding path program 1 times [2021-12-16 05:37:16,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:37:16,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571547561] [2021-12-16 05:37:16,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:37:16,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:37:16,476 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:37:16,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523556498] [2021-12-16 05:37:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:37:16,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:37:16,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:37:16,478 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) [2021-12-16 05:37:16,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 05:37:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:37:16,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 05:37:16,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:37:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:37:17,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:37:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:37:17,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:37:17,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571547561] [2021-12-16 05:37:17,208 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 05:37:17,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523556498] [2021-12-16 05:37:17,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523556498] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:37:17,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 05:37:17,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-16 05:37:17,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259166604] [2021-12-16 05:37:17,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 05:37:17,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:37:17,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:37:17,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:37:17,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:37:17,210 INFO L87 Difference]: Start difference. First operand 131 states and 171 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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) [2021-12-16 05:37:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:37:17,267 INFO L93 Difference]: Finished difference Result 441 states and 563 transitions. [2021-12-16 05:37:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:37:17,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 61 [2021-12-16 05:37:17,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:37:17,270 INFO L225 Difference]: With dead ends: 441 [2021-12-16 05:37:17,271 INFO L226 Difference]: Without dead ends: 410 [2021-12-16 05:37:17,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:37:17,272 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 468 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:37:17,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 612 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:37:17,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-12-16 05:37:17,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-12-16 05:37:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 385 states have (on average 1.2103896103896103) internal successors, (466), 395 states have internal predecessors, (466), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-16 05:37:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 510 transitions. [2021-12-16 05:37:17,304 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 510 transitions. Word has length 61 [2021-12-16 05:37:17,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:37:17,305 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 510 transitions. [2021-12-16 05:37:17,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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) [2021-12-16 05:37:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 510 transitions. [2021-12-16 05:37:17,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-16 05:37:17,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:37:17,309 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:37:17,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 05:37:17,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:37:17,532 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:37:17,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:37:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash -188814364, now seen corresponding path program 2 times [2021-12-16 05:37:17,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:37:17,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160776987] [2021-12-16 05:37:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:37:17,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:37:17,793 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:37:17,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165822450] [2021-12-16 05:37:17,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 05:37:17,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:37:17,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:37:17,808 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) [2021-12-16 05:37:17,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 05:37:18,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 05:37:18,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 05:37:18,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 05:37:18,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:37:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-12-16 05:37:19,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:37:19,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:37:19,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160776987] [2021-12-16 05:37:19,516 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 05:37:19,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165822450] [2021-12-16 05:37:19,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165822450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:37:19,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:37:19,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:37:19,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787247792] [2021-12-16 05:37:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:37:19,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:37:19,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:37:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:37:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:37:19,518 INFO L87 Difference]: Start difference. First operand 410 states and 510 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-12-16 05:37:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:37:19,671 INFO L93 Difference]: Finished difference Result 762 states and 954 transitions. [2021-12-16 05:37:19,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:37:19,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 214 [2021-12-16 05:37:19,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:37:19,673 INFO L225 Difference]: With dead ends: 762 [2021-12-16 05:37:19,673 INFO L226 Difference]: Without dead ends: 408 [2021-12-16 05:37:19,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:37:19,674 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 15 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:37:19,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 442 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:37:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-16 05:37:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2021-12-16 05:37:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 383 states have (on average 1.2088772845953002) internal successors, (463), 393 states have internal predecessors, (463), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-16 05:37:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 507 transitions. [2021-12-16 05:37:19,692 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 507 transitions. Word has length 214 [2021-12-16 05:37:19,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:37:19,694 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 507 transitions. [2021-12-16 05:37:19,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-12-16 05:37:19,694 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 507 transitions. [2021-12-16 05:37:19,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-12-16 05:37:19,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:37:19,699 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:37:19,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 05:37:19,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:37:19,919 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:37:19,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:37:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1697940859, now seen corresponding path program 1 times [2021-12-16 05:37:19,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:37:19,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982370852] [2021-12-16 05:37:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:37:19,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:37:20,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:37:20,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340892135] [2021-12-16 05:37:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:37:20,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:37:20,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:37:20,192 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) [2021-12-16 05:37:20,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 05:37:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:37:21,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 5059 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 05:37:21,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:37:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 05:37:22,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:37:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 05:37:22,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:37:22,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982370852] [2021-12-16 05:37:22,840 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 05:37:22,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340892135] [2021-12-16 05:37:22,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340892135] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:37:22,840 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 05:37:22,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-12-16 05:37:22,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411376987] [2021-12-16 05:37:22,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 05:37:22,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 05:37:22,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:37:22,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 05:37:22,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 05:37:22,842 INFO L87 Difference]: Start difference. First operand 408 states and 507 transitions. Second operand has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 05:37:23,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:37:23,013 INFO L93 Difference]: Finished difference Result 997 states and 1241 transitions. [2021-12-16 05:37:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 05:37:23,014 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 229 [2021-12-16 05:37:23,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:37:23,017 INFO L225 Difference]: With dead ends: 997 [2021-12-16 05:37:23,018 INFO L226 Difference]: Without dead ends: 966 [2021-12-16 05:37:23,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 05:37:23,018 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 1477 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:37:23,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 1467 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:37:23,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-12-16 05:37:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2021-12-16 05:37:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 923 states have (on average 1.1971830985915493) internal successors, (1105), 933 states have internal predecessors, (1105), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2021-12-16 05:37:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1185 transitions. [2021-12-16 05:37:23,035 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1185 transitions. Word has length 229 [2021-12-16 05:37:23,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:37:23,036 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1185 transitions. [2021-12-16 05:37:23,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.0) internal successors, (432), 12 states have internal predecessors, (432), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 05:37:23,036 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1185 transitions. [2021-12-16 05:37:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2021-12-16 05:37:23,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:37:23,042 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2021-12-16 05:37:23,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 05:37:23,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:37:23,255 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 05:37:23,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:37:23,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1369564891, now seen corresponding path program 2 times [2021-12-16 05:37:23,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:37:23,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541117592] [2021-12-16 05:37:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:37:23,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:37:23,756 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 05:37:23,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523454853] [2021-12-16 05:37:23,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 05:37:23,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:37:23,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:37:23,757 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) [2021-12-16 05:37:23,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process