./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.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_FNV_test4-2.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 834766c90c3d5af368509ae691087999af545dba19d7eed6a5d75f823cbb2437 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 04:30:36,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 04:30:36,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 04:30:36,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 04:30:36,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 04:30:36,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 04:30:36,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 04:30:36,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 04:30:36,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 04:30:36,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 04:30:36,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 04:30:36,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 04:30:36,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 04:30:36,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 04:30:36,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 04:30:36,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 04:30:36,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 04:30:36,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 04:30:36,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 04:30:36,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 04:30:36,089 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 04:30:36,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 04:30:36,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 04:30:36,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 04:30:36,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 04:30:36,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 04:30:36,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 04:30:36,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 04:30:36,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 04:30:36,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 04:30:36,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 04:30:36,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 04:30:36,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 04:30:36,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 04:30:36,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 04:30:36,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 04:30:36,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 04:30:36,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 04:30:36,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 04:30:36,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 04:30:36,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 04:30:36,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 04:30:36,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 04:30:36,149 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 04:30:36,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 04:30:36,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 04:30:36,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 04:30:36,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 04:30:36,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 04:30:36,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 04:30:36,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 04:30:36,152 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 04:30:36,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 04:30:36,153 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 04:30:36,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 04:30:36,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 04:30:36,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 04:30:36,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 04:30:36,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 04:30:36,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 04:30:36,154 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 04:30:36,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 04:30:36,156 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 04:30:36,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 04:30:36,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 04:30:36,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 04:30:36,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 04:30:36,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 04:30:36,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 04:30:36,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 04:30:36,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 04:30:36,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 04:30:36,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 04:30:36,158 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 04:30:36,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 04:30:36,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 04:30:36,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 834766c90c3d5af368509ae691087999af545dba19d7eed6a5d75f823cbb2437 [2022-07-20 04:30:36,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 04:30:36,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 04:30:36,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 04:30:36,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 04:30:36,450 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 04:30:36,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i [2022-07-20 04:30:36,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a894cdb6/0c015e817e9f4076b954c55717f95d35/FLAG286440e19 [2022-07-20 04:30:37,003 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 04:30:37,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i [2022-07-20 04:30:37,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a894cdb6/0c015e817e9f4076b954c55717f95d35/FLAG286440e19 [2022-07-20 04:30:37,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a894cdb6/0c015e817e9f4076b954c55717f95d35 [2022-07-20 04:30:37,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 04:30:37,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 04:30:37,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 04:30:37,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 04:30:37,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 04:30:37,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:30:37" (1/1) ... [2022-07-20 04:30:37,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc3058f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:37, skipping insertion in model container [2022-07-20 04:30:37,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:30:37" (1/1) ... [2022-07-20 04:30:37,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 04:30:37,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 04:30:37,940 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_FNV_test4-2.i[33021,33034] [2022-07-20 04:30:38,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 04:30:38,062 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 04:30:38,085 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_FNV_test4-2.i[33021,33034] [2022-07-20 04:30:38,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 04:30:38,237 INFO L208 MainTranslator]: Completed translation [2022-07-20 04:30:38,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38 WrapperNode [2022-07-20 04:30:38,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 04:30:38,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 04:30:38,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 04:30:38,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 04:30:38,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38" (1/1) ... [2022-07-20 04:30:38,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38" (1/1) ... [2022-07-20 04:30:38,351 INFO L137 Inliner]: procedures = 177, calls = 400, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1308 [2022-07-20 04:30:38,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 04:30:38,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 04:30:38,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 04:30:38,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 04:30:38,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38" (1/1) ... [2022-07-20 04:30:38,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38" (1/1) ... [2022-07-20 04:30:38,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38" (1/1) ... [2022-07-20 04:30:38,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38" (1/1) ... [2022-07-20 04:30:38,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38" (1/1) ... [2022-07-20 04:30:38,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38" (1/1) ... [2022-07-20 04:30:38,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38" (1/1) ... [2022-07-20 04:30:38,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 04:30:38,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 04:30:38,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 04:30:38,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 04:30:38,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38" (1/1) ... [2022-07-20 04:30:38,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 04:30:38,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:30:38,521 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 04:30:38,543 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 04:30:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 04:30:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-20 04:30:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-20 04:30:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 04:30:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 04:30:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 04:30:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 04:30:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 04:30:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 04:30:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 04:30:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 04:30:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 04:30:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 04:30:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 04:30:38,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 04:30:38,807 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 04:30:38,809 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 04:30:40,109 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 04:30:40,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 04:30:40,122 INFO L299 CfgBuilder]: Removed 69 assume(true) statements. [2022-07-20 04:30:40,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:30:40 BoogieIcfgContainer [2022-07-20 04:30:40,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 04:30:40,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 04:30:40,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 04:30:40,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 04:30:40,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:30:37" (1/3) ... [2022-07-20 04:30:40,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219bdba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:30:40, skipping insertion in model container [2022-07-20 04:30:40,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:30:38" (2/3) ... [2022-07-20 04:30:40,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219bdba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:30:40, skipping insertion in model container [2022-07-20 04:30:40,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:30:40" (3/3) ... [2022-07-20 04:30:40,131 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test4-2.i [2022-07-20 04:30:40,143 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 04:30:40,144 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 04:30:40,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 04:30:40,229 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@153069c4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1a8980e6 [2022-07-20 04:30:40,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 04:30:40,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 220 states have (on average 1.6818181818181819) internal successors, (370), 231 states have internal predecessors, (370), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-20 04:30:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-20 04:30:40,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:30:40,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 04:30:40,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:30:40,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:30:40,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1526554564, now seen corresponding path program 1 times [2022-07-20 04:30:40,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:30:40,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010455469] [2022-07-20 04:30:40,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:40,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:30:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:30:40,385 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 04:30:40,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:30:40,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010455469] [2022-07-20 04:30:40,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010455469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:30:40,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:30:40,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 04:30:40,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397798069] [2022-07-20 04:30:40,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:30:40,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 04:30:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:30:40,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 04:30:40,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 04:30:40,442 INFO L87 Difference]: Start difference. First operand has 240 states, 220 states have (on average 1.6818181818181819) internal successors, (370), 231 states have internal predecessors, (370), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) 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) [2022-07-20 04:30:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:30:40,513 INFO L93 Difference]: Finished difference Result 648 states and 1103 transitions. [2022-07-20 04:30:40,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 04:30:40,516 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 [2022-07-20 04:30:40,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:30:40,527 INFO L225 Difference]: With dead ends: 648 [2022-07-20 04:30:40,528 INFO L226 Difference]: Without dead ends: 377 [2022-07-20 04:30:40,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 04:30:40,535 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 211 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 652 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 [2022-07-20 04:30:40,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 652 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 04:30:40,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-07-20 04:30:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 208. [2022-07-20 04:30:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 189 states have (on average 1.3227513227513228) internal successors, (250), 199 states have internal predecessors, (250), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-20 04:30:40,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 282 transitions. [2022-07-20 04:30:40,606 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 282 transitions. Word has length 10 [2022-07-20 04:30:40,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:30:40,607 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 282 transitions. [2022-07-20 04:30:40,607 INFO L496 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) [2022-07-20 04:30:40,608 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 282 transitions. [2022-07-20 04:30:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 04:30:40,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:30:40,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:40,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 04:30:40,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:30:40,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:30:40,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1951190789, now seen corresponding path program 1 times [2022-07-20 04:30:40,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:30:40,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024345228] [2022-07-20 04:30:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:40,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:30:40,863 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:30:40,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519981306] [2022-07-20 04:30:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:40,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:40,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:30:40,867 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 04:30:40,898 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 04:30:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:30:41,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 04:30:41,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:30:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:30:41,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:30:41,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:30:41,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024345228] [2022-07-20 04:30:41,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:30:41,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519981306] [2022-07-20 04:30:41,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519981306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:30:41,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:30:41,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 04:30:41,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513762954] [2022-07-20 04:30:41,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:30:41,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 04:30:41,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:30:41,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 04:30:41,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 04:30:41,972 INFO L87 Difference]: Start difference. First operand 208 states and 282 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 04:30:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:30:42,107 INFO L93 Difference]: Finished difference Result 434 states and 592 transitions. [2022-07-20 04:30:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 04:30:42,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 108 [2022-07-20 04:30:42,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:30:42,110 INFO L225 Difference]: With dead ends: 434 [2022-07-20 04:30:42,110 INFO L226 Difference]: Without dead ends: 229 [2022-07-20 04:30:42,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 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 04:30:42,113 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 9 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 507 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 [2022-07-20 04:30:42,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 507 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 04:30:42,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-20 04:30:42,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2022-07-20 04:30:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 209 states have (on average 1.291866028708134) internal successors, (270), 219 states have internal predecessors, (270), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-20 04:30:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 302 transitions. [2022-07-20 04:30:42,133 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 302 transitions. Word has length 108 [2022-07-20 04:30:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:30:42,134 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 302 transitions. [2022-07-20 04:30:42,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 04:30:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 302 transitions. [2022-07-20 04:30:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 04:30:42,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:30:42,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:42,200 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 04:30:42,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:42,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:30:42,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:30:42,364 INFO L85 PathProgramCache]: Analyzing trace with hash -724801593, now seen corresponding path program 1 times [2022-07-20 04:30:42,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:30:42,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000280447] [2022-07-20 04:30:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:42,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:30:42,591 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:30:42,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294228632] [2022-07-20 04:30:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:42,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:42,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:30:42,594 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 04:30:42,596 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 04:30:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:30:43,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 04:30:43,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:30:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:30:43,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:30:43,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:30:43,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000280447] [2022-07-20 04:30:43,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:30:43,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294228632] [2022-07-20 04:30:43,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294228632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:30:43,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:30:43,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 04:30:43,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447322734] [2022-07-20 04:30:43,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:30:43,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 04:30:43,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:30:43,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 04:30:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 04:30:43,788 INFO L87 Difference]: Start difference. First operand 228 states and 302 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 04:30:43,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:30:43,859 INFO L93 Difference]: Finished difference Result 474 states and 632 transitions. [2022-07-20 04:30:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 04:30:43,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 108 [2022-07-20 04:30:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:30:43,862 INFO L225 Difference]: With dead ends: 474 [2022-07-20 04:30:43,862 INFO L226 Difference]: Without dead ends: 249 [2022-07-20 04:30:43,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 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 04:30:43,864 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 8 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 509 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 [2022-07-20 04:30:43,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 509 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 04:30:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-20 04:30:43,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 248. [2022-07-20 04:30:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 229 states have (on average 1.2663755458515285) internal successors, (290), 239 states have internal predecessors, (290), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-20 04:30:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 322 transitions. [2022-07-20 04:30:43,877 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 322 transitions. Word has length 108 [2022-07-20 04:30:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:30:43,877 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 322 transitions. [2022-07-20 04:30:43,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 04:30:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 322 transitions. [2022-07-20 04:30:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 04:30:43,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:30:43,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:43,914 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 04:30:44,095 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,SelfDestructingSolverStorable2 [2022-07-20 04:30:44,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:30:44,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:30:44,096 INFO L85 PathProgramCache]: Analyzing trace with hash -652415035, now seen corresponding path program 1 times [2022-07-20 04:30:44,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:30:44,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832775638] [2022-07-20 04:30:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:44,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:30:44,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:30:44,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112808018] [2022-07-20 04:30:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:44,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:44,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:30:44,336 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 04:30:44,344 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 04:30:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:30:45,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 2989 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 04:30:45,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:30:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:30:45,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:30:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:30:45,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832775638] [2022-07-20 04:30:45,588 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:30:45,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112808018] [2022-07-20 04:30:45,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112808018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:30:45,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:30:45,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 04:30:45,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213665522] [2022-07-20 04:30:45,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:30:45,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 04:30:45,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:30:45,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 04:30:45,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 04:30:45,591 INFO L87 Difference]: Start difference. First operand 248 states and 322 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 04:30:45,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:30:45,656 INFO L93 Difference]: Finished difference Result 485 states and 633 transitions. [2022-07-20 04:30:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 04:30:45,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 108 [2022-07-20 04:30:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:30:45,658 INFO L225 Difference]: With dead ends: 485 [2022-07-20 04:30:45,658 INFO L226 Difference]: Without dead ends: 240 [2022-07-20 04:30:45,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 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 04:30:45,660 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 228 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 540 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 04:30:45,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 540 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 04:30:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-20 04:30:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 234. [2022-07-20 04:30:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 215 states have (on average 1.2511627906976743) internal successors, (269), 225 states have internal predecessors, (269), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-20 04:30:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 301 transitions. [2022-07-20 04:30:45,670 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 301 transitions. Word has length 108 [2022-07-20 04:30:45,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:30:45,670 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 301 transitions. [2022-07-20 04:30:45,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 04:30:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 301 transitions. [2022-07-20 04:30:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 04:30:45,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:30:45,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:45,701 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 04:30:45,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:45,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:30:45,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:30:45,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2044262665, now seen corresponding path program 1 times [2022-07-20 04:30:45,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:30:45,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261343800] [2022-07-20 04:30:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:45,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:30:46,043 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:30:46,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372454190] [2022-07-20 04:30:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:46,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:46,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:30:46,048 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 04:30:46,059 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 04:30:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:30:47,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 04:30:47,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:30:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:30:47,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:30:47,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:30:47,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261343800] [2022-07-20 04:30:47,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:30:47,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372454190] [2022-07-20 04:30:47,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372454190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:30:47,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:30:47,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 04:30:47,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497942797] [2022-07-20 04:30:47,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:30:47,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 04:30:47,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:30:47,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 04:30:47,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 04:30:47,336 INFO L87 Difference]: Start difference. First operand 234 states and 301 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 04:30:47,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:30:47,466 INFO L93 Difference]: Finished difference Result 546 states and 700 transitions. [2022-07-20 04:30:47,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 04:30:47,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 108 [2022-07-20 04:30:47,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:30:47,468 INFO L225 Difference]: With dead ends: 546 [2022-07-20 04:30:47,468 INFO L226 Difference]: Without dead ends: 315 [2022-07-20 04:30:47,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 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 04:30:47,469 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 220 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 04:30:47,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1028 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 04:30:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-20 04:30:47,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 220. [2022-07-20 04:30:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 201 states have (on average 1.2338308457711442) internal successors, (248), 211 states have internal predecessors, (248), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-20 04:30:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 280 transitions. [2022-07-20 04:30:47,489 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 280 transitions. Word has length 108 [2022-07-20 04:30:47,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:30:47,490 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 280 transitions. [2022-07-20 04:30:47,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 04:30:47,490 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 280 transitions. [2022-07-20 04:30:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 04:30:47,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:30:47,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:47,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-20 04:30:47,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:47,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:30:47,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:30:47,705 INFO L85 PathProgramCache]: Analyzing trace with hash 456470147, now seen corresponding path program 1 times [2022-07-20 04:30:47,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:30:47,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914133004] [2022-07-20 04:30:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:47,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:30:47,849 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:30:47,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195640133] [2022-07-20 04:30:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:47,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:47,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:30:47,852 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 04:30:47,862 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 04:30:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:30:49,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 04:30:49,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:30:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:30:49,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 04:30:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 04:30:49,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:30:49,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914133004] [2022-07-20 04:30:49,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:30:49,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195640133] [2022-07-20 04:30:49,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195640133] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 04:30:49,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 04:30:49,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-20 04:30:49,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651279042] [2022-07-20 04:30:49,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 04:30:49,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 04:30:49,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:30:49,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 04:30:49,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-20 04:30:49,550 INFO L87 Difference]: Start difference. First operand 220 states and 280 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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 04:30:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:30:49,664 INFO L93 Difference]: Finished difference Result 797 states and 999 transitions. [2022-07-20 04:30:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 04:30:49,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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 108 [2022-07-20 04:30:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:30:49,669 INFO L225 Difference]: With dead ends: 797 [2022-07-20 04:30:49,669 INFO L226 Difference]: Without dead ends: 766 [2022-07-20 04:30:49,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-20 04:30:49,670 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1313 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 04:30:49,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 1000 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 04:30:49,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-07-20 04:30:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-07-20 04:30:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 729 states have (on average 1.2043895747599451) internal successors, (878), 739 states have internal predecessors, (878), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-20 04:30:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 946 transitions. [2022-07-20 04:30:49,697 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 946 transitions. Word has length 108 [2022-07-20 04:30:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:30:49,698 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 946 transitions. [2022-07-20 04:30:49,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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 04:30:49,698 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 946 transitions. [2022-07-20 04:30:49,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-07-20 04:30:49,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:30:49,704 INFO L195 NwaCegarLoop]: 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, 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] [2022-07-20 04:30:49,741 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 04:30:49,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:49,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:30:49,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:30:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2044829992, now seen corresponding path program 2 times [2022-07-20 04:30:49,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:30:49,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970565355] [2022-07-20 04:30:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:49,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:30:50,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:30:50,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446827553] [2022-07-20 04:30:50,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 04:30:50,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:50,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:30:50,508 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 04:30:50,510 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 04:30:52,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 04:30:52,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 04:30:52,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 04:30:52,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:30:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2022-07-20 04:30:53,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:30:53,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:30:53,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970565355] [2022-07-20 04:30:53,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:30:53,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446827553] [2022-07-20 04:30:53,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446827553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:30:53,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:30:53,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 04:30:53,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847325552] [2022-07-20 04:30:53,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:30:53,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 04:30:53,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:30:53,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 04:30:53,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 04:30:53,499 INFO L87 Difference]: Start difference. First operand 766 states and 946 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 04:30:53,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:30:53,872 INFO L93 Difference]: Finished difference Result 1385 states and 1717 transitions. [2022-07-20 04:30:53,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 04:30:53,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 402 [2022-07-20 04:30:53,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:30:53,878 INFO L225 Difference]: With dead ends: 1385 [2022-07-20 04:30:53,879 INFO L226 Difference]: Without dead ends: 764 [2022-07-20 04:30:53,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 04:30:53,881 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 65 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 04:30:53,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 728 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 04:30:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-07-20 04:30:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2022-07-20 04:30:53,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 727 states have (on average 1.203576341127923) internal successors, (875), 737 states have internal predecessors, (875), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-20 04:30:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 943 transitions. [2022-07-20 04:30:53,974 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 943 transitions. Word has length 402 [2022-07-20 04:30:53,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:30:53,975 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 943 transitions. [2022-07-20 04:30:53,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 04:30:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 943 transitions. [2022-07-20 04:30:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-07-20 04:30:53,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:30:53,987 INFO L195 NwaCegarLoop]: 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, 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] [2022-07-20 04:30:54,016 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 04:30:54,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:54,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:30:54,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:30:54,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2065716649, now seen corresponding path program 1 times [2022-07-20 04:30:54,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:30:54,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897759055] [2022-07-20 04:30:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:54,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:30:54,715 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:30:54,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99394838] [2022-07-20 04:30:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:30:54,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:30:54,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:30:54,717 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 04:30:54,718 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 04:30:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 04:30:58,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 10791 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 04:30:58,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:30:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 04:30:59,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 04:30:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 04:30:59,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:30:59,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897759055] [2022-07-20 04:30:59,797 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:30:59,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99394838] [2022-07-20 04:30:59,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99394838] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 04:30:59,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 04:30:59,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-20 04:30:59,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388948728] [2022-07-20 04:30:59,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 04:30:59,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 04:30:59,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:30:59,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 04:30:59,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-20 04:30:59,803 INFO L87 Difference]: Start difference. First operand 764 states and 943 transitions. Second operand has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 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) [2022-07-20 04:31:00,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:31:00,143 INFO L93 Difference]: Finished difference Result 1887 states and 2331 transitions. [2022-07-20 04:31:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 04:31:00,144 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 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 417 [2022-07-20 04:31:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:31:00,154 INFO L225 Difference]: With dead ends: 1887 [2022-07-20 04:31:00,154 INFO L226 Difference]: Without dead ends: 1856 [2022-07-20 04:31:00,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-20 04:31:00,156 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 2743 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2799 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 04:31:00,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2799 Valid, 2395 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 04:31:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2022-07-20 04:31:00,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1856. [2022-07-20 04:31:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1783 states have (on average 1.1974200785193494) internal successors, (2135), 1793 states have internal predecessors, (2135), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2022-07-20 04:31:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2275 transitions. [2022-07-20 04:31:00,212 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2275 transitions. Word has length 417 [2022-07-20 04:31:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:31:00,213 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2275 transitions. [2022-07-20 04:31:00,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 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) [2022-07-20 04:31:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2275 transitions. [2022-07-20 04:31:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2022-07-20 04:31:00,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:31:00,245 INFO L195 NwaCegarLoop]: 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, 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] [2022-07-20 04:31:00,315 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 04:31:00,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:31:00,460 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:31:00,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:31:00,460 INFO L85 PathProgramCache]: Analyzing trace with hash -613485165, now seen corresponding path program 2 times [2022-07-20 04:31:00,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:31:00,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119075341] [2022-07-20 04:31:00,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:31:00,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:31:01,806 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:31:01,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351933168] [2022-07-20 04:31:01,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 04:31:01,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:31:01,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:31:01,808 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 04:31:01,809 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 04:31:10,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 04:31:10,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 04:31:10,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 28173 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 04:31:10,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 04:31:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4406 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4081 trivial. 0 not checked. [2022-07-20 04:31:11,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 04:31:11,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 04:31:11,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119075341] [2022-07-20 04:31:11,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 04:31:11,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351933168] [2022-07-20 04:31:11,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351933168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 04:31:11,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 04:31:11,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 04:31:11,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202641293] [2022-07-20 04:31:11,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 04:31:11,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 04:31:11,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 04:31:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 04:31:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 04:31:11,084 INFO L87 Difference]: Start difference. First operand 1856 states and 2275 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 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 04:31:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 04:31:11,175 INFO L93 Difference]: Finished difference Result 3654 states and 4484 transitions. [2022-07-20 04:31:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 04:31:11,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 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 1005 [2022-07-20 04:31:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 04:31:11,185 INFO L225 Difference]: With dead ends: 3654 [2022-07-20 04:31:11,186 INFO L226 Difference]: Without dead ends: 1854 [2022-07-20 04:31:11,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 1003 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 04:31:11,191 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 15 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 04:31:11,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 517 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 04:31:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2022-07-20 04:31:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1854. [2022-07-20 04:31:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1781 states have (on average 1.197080291970803) internal successors, (2132), 1791 states have internal predecessors, (2132), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2022-07-20 04:31:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2272 transitions. [2022-07-20 04:31:11,246 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2272 transitions. Word has length 1005 [2022-07-20 04:31:11,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 04:31:11,246 INFO L495 AbstractCegarLoop]: Abstraction has 1854 states and 2272 transitions. [2022-07-20 04:31:11,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 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 04:31:11,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2272 transitions. [2022-07-20 04:31:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2022-07-20 04:31:11,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 04:31:11,260 INFO L195 NwaCegarLoop]: 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, 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, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:11,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-20 04:31:11,475 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,SelfDestructingSolverStorable8 [2022-07-20 04:31:11,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 04:31:11,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 04:31:11,476 INFO L85 PathProgramCache]: Analyzing trace with hash -213100270, now seen corresponding path program 1 times [2022-07-20 04:31:11,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 04:31:11,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587593908] [2022-07-20 04:31:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:31:11,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 04:31:12,718 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 04:31:12,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707927480] [2022-07-20 04:31:12,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 04:31:12,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 04:31:12,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 04:31:12,721 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 04:31:12,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process