./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 05:20:07,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 05:20:07,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 05:20:07,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 05:20:07,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 05:20:07,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 05:20:07,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 05:20:07,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 05:20:07,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 05:20:07,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 05:20:07,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 05:20:07,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 05:20:07,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 05:20:07,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 05:20:07,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 05:20:07,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 05:20:07,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 05:20:07,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 05:20:07,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 05:20:07,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 05:20:07,094 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 05:20:07,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 05:20:07,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 05:20:07,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 05:20:07,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 05:20:07,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 05:20:07,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 05:20:07,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 05:20:07,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 05:20:07,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 05:20:07,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 05:20:07,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 05:20:07,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 05:20:07,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 05:20:07,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 05:20:07,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 05:20:07,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 05:20:07,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 05:20:07,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 05:20:07,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 05:20:07,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 05:20:07,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 05:20:07,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-14 05:20:07,153 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 05:20:07,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 05:20:07,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 05:20:07,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 05:20:07,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 05:20:07,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 05:20:07,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 05:20:07,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 05:20:07,156 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 05:20:07,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 05:20:07,157 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 05:20:07,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 05:20:07,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 05:20:07,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 05:20:07,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 05:20:07,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 05:20:07,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 05:20:07,158 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 05:20:07,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 05:20:07,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 05:20:07,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 05:20:07,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 05:20:07,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 05:20:07,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 05:20:07,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 05:20:07,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 05:20:07,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 05:20:07,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 05:20:07,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 05:20:07,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 05:20:07,161 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 05:20:07,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 05:20:07,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 05:20:07,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2022-07-14 05:20:07,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 05:20:07,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 05:20:07,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 05:20:07,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 05:20:07,411 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 05:20:07,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-07-14 05:20:07,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa576b879/af8d6d94855b4d29bdfe899d3a0cd3bb/FLAGbeea7fca6 [2022-07-14 05:20:08,019 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 05:20:08,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-07-14 05:20:08,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa576b879/af8d6d94855b4d29bdfe899d3a0cd3bb/FLAGbeea7fca6 [2022-07-14 05:20:08,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa576b879/af8d6d94855b4d29bdfe899d3a0cd3bb [2022-07-14 05:20:08,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 05:20:08,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 05:20:08,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 05:20:08,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 05:20:08,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 05:20:08,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 05:20:08" (1/1) ... [2022-07-14 05:20:08,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6fa1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:08, skipping insertion in model container [2022-07-14 05:20:08,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 05:20:08" (1/1) ... [2022-07-14 05:20:08,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 05:20:08,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 05:20:08,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-07-14 05:20:08,859 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-07-14 05:20:08,985 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-07-14 05:20:08,986 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-07-14 05:20:08,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 05:20:09,000 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 05:20:09,024 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-07-14 05:20:09,026 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-07-14 05:20:09,071 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-07-14 05:20:09,071 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-07-14 05:20:09,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 05:20:09,140 INFO L208 MainTranslator]: Completed translation [2022-07-14 05:20:09,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09 WrapperNode [2022-07-14 05:20:09,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 05:20:09,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 05:20:09,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 05:20:09,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 05:20:09,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09" (1/1) ... [2022-07-14 05:20:09,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09" (1/1) ... [2022-07-14 05:20:09,275 INFO L137 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1040 [2022-07-14 05:20:09,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 05:20:09,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 05:20:09,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 05:20:09,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 05:20:09,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09" (1/1) ... [2022-07-14 05:20:09,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09" (1/1) ... [2022-07-14 05:20:09,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09" (1/1) ... [2022-07-14 05:20:09,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09" (1/1) ... [2022-07-14 05:20:09,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09" (1/1) ... [2022-07-14 05:20:09,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09" (1/1) ... [2022-07-14 05:20:09,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09" (1/1) ... [2022-07-14 05:20:09,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 05:20:09,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 05:20:09,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 05:20:09,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 05:20:09,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09" (1/1) ... [2022-07-14 05:20:09,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 05:20:09,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:09,412 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) [2022-07-14 05:20:09,417 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 [2022-07-14 05:20:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 05:20:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-14 05:20:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 05:20:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 05:20:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-07-14 05:20:09,444 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-07-14 05:20:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 05:20:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-14 05:20:09,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-14 05:20:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 05:20:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 05:20:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 05:20:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-07-14 05:20:09,446 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-07-14 05:20:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 05:20:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-07-14 05:20:09,446 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-07-14 05:20:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 05:20:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 05:20:09,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 05:20:09,623 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 05:20:09,628 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 05:20:10,729 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 05:20:10,739 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 05:20:10,740 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2022-07-14 05:20:10,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 05:20:10 BoogieIcfgContainer [2022-07-14 05:20:10,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 05:20:10,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 05:20:10,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 05:20:10,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 05:20:10,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 05:20:08" (1/3) ... [2022-07-14 05:20:10,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432ec840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 05:20:10, skipping insertion in model container [2022-07-14 05:20:10,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:20:09" (2/3) ... [2022-07-14 05:20:10,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432ec840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 05:20:10, skipping insertion in model container [2022-07-14 05:20:10,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 05:20:10" (3/3) ... [2022-07-14 05:20:10,755 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-1.i [2022-07-14 05:20:10,769 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 05:20:10,769 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-14 05:20:10,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 05:20:10,866 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@50d9a42d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2d9eadb3 [2022-07-14 05:20:10,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-14 05:20:10,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 225 states, 203 states have (on average 1.6354679802955665) internal successors, (332), 207 states have internal predecessors, (332), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-14 05:20:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-14 05:20:10,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:10,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:20:10,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash -720802776, now seen corresponding path program 1 times [2022-07-14 05:20:10,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:10,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204532347] [2022-07-14 05:20:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:10,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:20:11,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:11,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204532347] [2022-07-14 05:20:11,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204532347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:20:11,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:20:11,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 05:20:11,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616762243] [2022-07-14 05:20:11,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:20:11,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 05:20:11,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:11,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 05:20:11,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 05:20:11,159 INFO L87 Difference]: Start difference. First operand has 225 states, 203 states have (on average 1.6354679802955665) internal successors, (332), 207 states have internal predecessors, (332), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:11,241 INFO L93 Difference]: Finished difference Result 445 states and 724 transitions. [2022-07-14 05:20:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 05:20:11,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-14 05:20:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:11,262 INFO L225 Difference]: With dead ends: 445 [2022-07-14 05:20:11,263 INFO L226 Difference]: Without dead ends: 218 [2022-07-14 05:20:11,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 05:20:11,280 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:20:11,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:20:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-14 05:20:11,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-07-14 05:20:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 197 states have (on average 1.299492385786802) internal successors, (256), 202 states have internal predecessors, (256), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-14 05:20:11,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 281 transitions. [2022-07-14 05:20:11,356 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 281 transitions. Word has length 8 [2022-07-14 05:20:11,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:11,357 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 281 transitions. [2022-07-14 05:20:11,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:11,357 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 281 transitions. [2022-07-14 05:20:11,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 05:20:11,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:11,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:20:11,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 05:20:11,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:11,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:11,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1810590275, now seen corresponding path program 1 times [2022-07-14 05:20:11,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:11,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982130854] [2022-07-14 05:20:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:11,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:20:11,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:11,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982130854] [2022-07-14 05:20:11,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982130854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:20:11,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:20:11,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 05:20:11,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917339437] [2022-07-14 05:20:11,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:20:11,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 05:20:11,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:11,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 05:20:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 05:20:11,493 INFO L87 Difference]: Start difference. First operand 218 states and 281 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:11,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:11,893 INFO L93 Difference]: Finished difference Result 455 states and 590 transitions. [2022-07-14 05:20:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 05:20:11,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-14 05:20:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:11,895 INFO L225 Difference]: With dead ends: 455 [2022-07-14 05:20:11,895 INFO L226 Difference]: Without dead ends: 346 [2022-07-14 05:20:11,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:20:11,898 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 152 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 05:20:11,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 708 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 05:20:11,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-07-14 05:20:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 220. [2022-07-14 05:20:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 199 states have (on average 1.2964824120603016) internal successors, (258), 204 states have internal predecessors, (258), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-14 05:20:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 283 transitions. [2022-07-14 05:20:11,931 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 283 transitions. Word has length 10 [2022-07-14 05:20:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:11,931 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 283 transitions. [2022-07-14 05:20:11,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 283 transitions. [2022-07-14 05:20:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 05:20:11,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:11,933 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] [2022-07-14 05:20:11,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 05:20:11,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:11,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1082818915, now seen corresponding path program 1 times [2022-07-14 05:20:11,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:11,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096201757] [2022-07-14 05:20:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:11,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:11,992 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:11,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733141310] [2022-07-14 05:20:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:11,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:11,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:11,995 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) [2022-07-14 05:20:12,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 05:20:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:12,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 05:20:12,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:20:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:20:12,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:20:12,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:12,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096201757] [2022-07-14 05:20:12,277 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:20:12,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733141310] [2022-07-14 05:20:12,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733141310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:20:12,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:20:12,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 05:20:12,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484703899] [2022-07-14 05:20:12,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:20:12,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 05:20:12,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:12,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 05:20:12,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:20:12,280 INFO L87 Difference]: Start difference. First operand 220 states and 283 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:12,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:12,345 INFO L93 Difference]: Finished difference Result 457 states and 593 transitions. [2022-07-14 05:20:12,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 05:20:12,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-14 05:20:12,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:12,347 INFO L225 Difference]: With dead ends: 457 [2022-07-14 05:20:12,347 INFO L226 Difference]: Without dead ends: 241 [2022-07-14 05:20:12,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:20:12,351 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 9 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-07-14 05:20:12,352 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] [2022-07-14 05:20:12,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-14 05:20:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2022-07-14 05:20:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 219 states have (on average 1.269406392694064) internal successors, (278), 224 states have internal predecessors, (278), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-14 05:20:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 303 transitions. [2022-07-14 05:20:12,380 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 303 transitions. Word has length 47 [2022-07-14 05:20:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:12,380 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 303 transitions. [2022-07-14 05:20:12,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 303 transitions. [2022-07-14 05:20:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 05:20:12,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:12,386 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] [2022-07-14 05:20:12,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-14 05:20:12,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:12,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:12,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:12,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1223367525, now seen corresponding path program 1 times [2022-07-14 05:20:12,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:12,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914211537] [2022-07-14 05:20:12,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:12,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:12,629 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:12,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45791942] [2022-07-14 05:20:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:12,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:12,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:12,633 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) [2022-07-14 05:20:12,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 05:20:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:12,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 05:20:12,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:20:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:20:12,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:20:12,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:12,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914211537] [2022-07-14 05:20:12,867 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:20:12,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45791942] [2022-07-14 05:20:12,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45791942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:20:12,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:20:12,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 05:20:12,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101199601] [2022-07-14 05:20:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:20:12,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 05:20:12,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 05:20:12,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 05:20:12,869 INFO L87 Difference]: Start difference. First operand 240 states and 303 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:12,937 INFO L93 Difference]: Finished difference Result 469 states and 595 transitions. [2022-07-14 05:20:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 05:20:12,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-14 05:20:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:12,939 INFO L225 Difference]: With dead ends: 469 [2022-07-14 05:20:12,939 INFO L226 Difference]: Without dead ends: 233 [2022-07-14 05:20:12,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:20:12,941 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 223 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 556 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 [2022-07-14 05:20:12,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 556 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:20:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-14 05:20:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 226. [2022-07-14 05:20:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 205 states have (on average 1.2536585365853659) internal successors, (257), 210 states have internal predecessors, (257), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-14 05:20:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 282 transitions. [2022-07-14 05:20:12,949 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 282 transitions. Word has length 47 [2022-07-14 05:20:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:12,949 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 282 transitions. [2022-07-14 05:20:12,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 282 transitions. [2022-07-14 05:20:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 05:20:12,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:12,950 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] [2022-07-14 05:20:12,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 05:20:13,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-14 05:20:13,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash 206381993, now seen corresponding path program 1 times [2022-07-14 05:20:13,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:13,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996521207] [2022-07-14 05:20:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:13,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:13,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:13,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45346823] [2022-07-14 05:20:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:13,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:13,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:13,223 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) [2022-07-14 05:20:13,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 05:20:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:13,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 05:20:13,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:20:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:20:13,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:20:13,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:13,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996521207] [2022-07-14 05:20:13,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:20:13,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45346823] [2022-07-14 05:20:13,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45346823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:20:13,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:20:13,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 05:20:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853384480] [2022-07-14 05:20:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:20:13,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 05:20:13,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 05:20:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 05:20:13,771 INFO L87 Difference]: Start difference. First operand 226 states and 282 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:13,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:13,819 INFO L93 Difference]: Finished difference Result 238 states and 294 transitions. [2022-07-14 05:20:13,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 05:20:13,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-14 05:20:13,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:13,821 INFO L225 Difference]: With dead ends: 238 [2022-07-14 05:20:13,821 INFO L226 Difference]: Without dead ends: 236 [2022-07-14 05:20:13,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 05:20:13,822 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 13 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:20:13,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1336 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:20:13,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-14 05:20:13,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-07-14 05:20:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 212 states have (on average 1.25) internal successors, (265), 218 states have internal predecessors, (265), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-14 05:20:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 292 transitions. [2022-07-14 05:20:13,830 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 292 transitions. Word has length 47 [2022-07-14 05:20:13,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:13,831 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 292 transitions. [2022-07-14 05:20:13,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 292 transitions. [2022-07-14 05:20:13,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 05:20:13,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:13,833 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] [2022-07-14 05:20:13,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 05:20:14,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:14,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:14,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash -806940807, now seen corresponding path program 1 times [2022-07-14 05:20:14,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:14,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878233099] [2022-07-14 05:20:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:14,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:14,151 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:14,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171140186] [2022-07-14 05:20:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:14,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:14,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:14,153 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) [2022-07-14 05:20:14,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 05:20:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:14,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 05:20:14,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:20:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:20:14,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:20:14,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:14,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878233099] [2022-07-14 05:20:14,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:20:14,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171140186] [2022-07-14 05:20:14,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171140186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:20:14,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:20:14,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 05:20:14,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71617593] [2022-07-14 05:20:14,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:20:14,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 05:20:14,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:14,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 05:20:14,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:20:14,692 INFO L87 Difference]: Start difference. First operand 236 states and 292 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:14,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:14,709 INFO L93 Difference]: Finished difference Result 469 states and 582 transitions. [2022-07-14 05:20:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 05:20:14,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-14 05:20:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:14,711 INFO L225 Difference]: With dead ends: 469 [2022-07-14 05:20:14,711 INFO L226 Difference]: Without dead ends: 237 [2022-07-14 05:20:14,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:20:14,713 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 0 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:20:14,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 541 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:20:14,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-14 05:20:14,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-07-14 05:20:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 213 states have (on average 1.2488262910798122) internal successors, (266), 219 states have internal predecessors, (266), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-14 05:20:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 293 transitions. [2022-07-14 05:20:14,721 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 293 transitions. Word has length 58 [2022-07-14 05:20:14,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:14,721 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 293 transitions. [2022-07-14 05:20:14,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 293 transitions. [2022-07-14 05:20:14,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 05:20:14,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:14,723 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] [2022-07-14 05:20:14,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 05:20:14,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:14,948 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:14,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash -413913797, now seen corresponding path program 1 times [2022-07-14 05:20:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:14,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91468415] [2022-07-14 05:20:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:14,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:15,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:15,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113495922] [2022-07-14 05:20:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:15,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:15,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:15,076 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) [2022-07-14 05:20:15,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 05:20:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:15,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 05:20:15,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:20:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:20:15,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:20:15,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:15,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91468415] [2022-07-14 05:20:15,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:20:15,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113495922] [2022-07-14 05:20:15,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113495922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:20:15,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:20:15,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 05:20:15,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623287440] [2022-07-14 05:20:15,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:20:15,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 05:20:15,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 05:20:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:20:15,779 INFO L87 Difference]: Start difference. First operand 237 states and 293 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:15,868 INFO L93 Difference]: Finished difference Result 592 states and 736 transitions. [2022-07-14 05:20:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 05:20:15,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-14 05:20:15,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:15,871 INFO L225 Difference]: With dead ends: 592 [2022-07-14 05:20:15,871 INFO L226 Difference]: Without dead ends: 359 [2022-07-14 05:20:15,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:20:15,872 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 106 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:20:15,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 564 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:20:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-14 05:20:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 345. [2022-07-14 05:20:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 321 states have (on average 1.249221183800623) internal successors, (401), 327 states have internal predecessors, (401), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-14 05:20:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 428 transitions. [2022-07-14 05:20:15,899 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 428 transitions. Word has length 58 [2022-07-14 05:20:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:15,899 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 428 transitions. [2022-07-14 05:20:15,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:20:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 428 transitions. [2022-07-14 05:20:15,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-14 05:20:15,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:15,901 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:20:15,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-14 05:20:16,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:16,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:16,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:16,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1298801861, now seen corresponding path program 1 times [2022-07-14 05:20:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:16,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398671309] [2022-07-14 05:20:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:16,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:16,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:16,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735851306] [2022-07-14 05:20:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:16,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:16,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:16,196 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) [2022-07-14 05:20:16,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 05:20:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:16,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 05:20:16,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:20:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:20:16,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 05:20:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:20:16,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:16,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398671309] [2022-07-14 05:20:16,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:20:16,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735851306] [2022-07-14 05:20:16,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735851306] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-14 05:20:16,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 05:20:16,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2022-07-14 05:20:16,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106857246] [2022-07-14 05:20:16,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:20:16,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 05:20:16,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:16,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 05:20:16,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-14 05:20:16,848 INFO L87 Difference]: Start difference. First operand 345 states and 428 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 05:20:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:17,017 INFO L93 Difference]: Finished difference Result 1228 states and 1566 transitions. [2022-07-14 05:20:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 05:20:17,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-07-14 05:20:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:17,025 INFO L225 Difference]: With dead ends: 1228 [2022-07-14 05:20:17,025 INFO L226 Difference]: Without dead ends: 932 [2022-07-14 05:20:17,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-14 05:20:17,030 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1692 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:20:17,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 855 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:20:17,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-07-14 05:20:17,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 573. [2022-07-14 05:20:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 544 states have (on average 1.2610294117647058) internal successors, (686), 550 states have internal predecessors, (686), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-07-14 05:20:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 718 transitions. [2022-07-14 05:20:17,061 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 718 transitions. Word has length 62 [2022-07-14 05:20:17,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:17,062 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 718 transitions. [2022-07-14 05:20:17,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 05:20:17,062 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 718 transitions. [2022-07-14 05:20:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-14 05:20:17,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:17,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:20:17,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 05:20:17,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:17,288 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1545086991, now seen corresponding path program 1 times [2022-07-14 05:20:17,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:17,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35677447] [2022-07-14 05:20:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:17,361 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:17,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773972741] [2022-07-14 05:20:17,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:17,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:17,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:17,363 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) [2022-07-14 05:20:17,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 05:20:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:17,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 05:20:17,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:20:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-14 05:20:17,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:20:17,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:17,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35677447] [2022-07-14 05:20:17,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:20:17,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773972741] [2022-07-14 05:20:17,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773972741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:20:17,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:20:17,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 05:20:17,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755185463] [2022-07-14 05:20:17,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:20:17,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 05:20:17,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:17,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 05:20:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 05:20:17,893 INFO L87 Difference]: Start difference. First operand 573 states and 718 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 05:20:18,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:18,003 INFO L93 Difference]: Finished difference Result 1078 states and 1360 transitions. [2022-07-14 05:20:18,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 05:20:18,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2022-07-14 05:20:18,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:18,006 INFO L225 Difference]: With dead ends: 1078 [2022-07-14 05:20:18,006 INFO L226 Difference]: Without dead ends: 573 [2022-07-14 05:20:18,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-14 05:20:18,008 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 25 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:20:18,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 991 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:20:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-07-14 05:20:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2022-07-14 05:20:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 544 states have (on average 1.2610294117647058) internal successors, (686), 550 states have internal predecessors, (686), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-14 05:20:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 717 transitions. [2022-07-14 05:20:18,027 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 717 transitions. Word has length 93 [2022-07-14 05:20:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:18,027 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 717 transitions. [2022-07-14 05:20:18,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 05:20:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 717 transitions. [2022-07-14 05:20:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-14 05:20:18,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:18,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:20:18,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-14 05:20:18,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:18,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:18,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:18,244 INFO L85 PathProgramCache]: Analyzing trace with hash -441690957, now seen corresponding path program 1 times [2022-07-14 05:20:18,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:18,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260791474] [2022-07-14 05:20:18,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:18,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:18,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:18,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442760989] [2022-07-14 05:20:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:18,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:18,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:18,288 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) [2022-07-14 05:20:18,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-14 05:20:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:18,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 05:20:18,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:20:18,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-14 05:20:18,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 05:20:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 05:20:18,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:20:18,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:18,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260791474] [2022-07-14 05:20:18,824 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:20:18,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442760989] [2022-07-14 05:20:18,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442760989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:20:18,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:20:18,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 05:20:18,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695319448] [2022-07-14 05:20:18,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:20:18,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 05:20:18,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 05:20:18,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 05:20:18,826 INFO L87 Difference]: Start difference. First operand 573 states and 717 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 05:20:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:19,083 INFO L93 Difference]: Finished difference Result 779 states and 994 transitions. [2022-07-14 05:20:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 05:20:19,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 98 [2022-07-14 05:20:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:19,088 INFO L225 Difference]: With dead ends: 779 [2022-07-14 05:20:19,088 INFO L226 Difference]: Without dead ends: 766 [2022-07-14 05:20:19,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:20:19,089 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 107 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 05:20:19,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 720 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 05:20:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-07-14 05:20:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 577. [2022-07-14 05:20:19,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 548 states have (on average 1.2591240875912408) internal successors, (690), 554 states have internal predecessors, (690), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-14 05:20:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 721 transitions. [2022-07-14 05:20:19,111 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 721 transitions. Word has length 98 [2022-07-14 05:20:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:19,111 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 721 transitions. [2022-07-14 05:20:19,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 05:20:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 721 transitions. [2022-07-14 05:20:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-14 05:20:19,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:19,113 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:20:19,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-14 05:20:19,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-14 05:20:19,328 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1451857612, now seen corresponding path program 1 times [2022-07-14 05:20:19,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:19,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228277484] [2022-07-14 05:20:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:19,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:19,373 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:19,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591631913] [2022-07-14 05:20:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:19,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:19,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:19,375 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) [2022-07-14 05:20:19,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-14 05:20:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:20,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-14 05:20:20,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:20:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-14 05:20:20,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:20:20,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:20,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228277484] [2022-07-14 05:20:20,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:20:20,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591631913] [2022-07-14 05:20:20,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591631913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:20:20,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:20:20,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 05:20:20,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144624044] [2022-07-14 05:20:20,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:20:20,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 05:20:20,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:20,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 05:20:20,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-14 05:20:20,073 INFO L87 Difference]: Start difference. First operand 577 states and 721 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 05:20:20,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:20,209 INFO L93 Difference]: Finished difference Result 1094 states and 1379 transitions. [2022-07-14 05:20:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 05:20:20,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 110 [2022-07-14 05:20:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:20,213 INFO L225 Difference]: With dead ends: 1094 [2022-07-14 05:20:20,213 INFO L226 Difference]: Without dead ends: 582 [2022-07-14 05:20:20,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-14 05:20:20,215 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 18 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:20:20,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1788 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:20:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-07-14 05:20:20,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2022-07-14 05:20:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 552 states have (on average 1.2590579710144927) internal successors, (695), 559 states have internal predecessors, (695), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-07-14 05:20:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 727 transitions. [2022-07-14 05:20:20,237 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 727 transitions. Word has length 110 [2022-07-14 05:20:20,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:20,237 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 727 transitions. [2022-07-14 05:20:20,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 05:20:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 727 transitions. [2022-07-14 05:20:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-14 05:20:20,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:20,239 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:20:20,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-14 05:20:20,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:20,455 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:20,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1710945854, now seen corresponding path program 1 times [2022-07-14 05:20:20,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:20,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040857263] [2022-07-14 05:20:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:20,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:20,501 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:20,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075183455] [2022-07-14 05:20:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:20,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:20,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:20,504 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:20:20,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-14 05:20:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:20:21,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-14 05:20:21,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:20:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 05:20:21,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 05:20:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 05:20:21,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:21,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040857263] [2022-07-14 05:20:21,809 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:20:21,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075183455] [2022-07-14 05:20:21,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075183455] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 05:20:21,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 05:20:21,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2022-07-14 05:20:21,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061489318] [2022-07-14 05:20:21,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 05:20:21,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 05:20:21,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:21,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 05:20:21,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-14 05:20:21,810 INFO L87 Difference]: Start difference. First operand 582 states and 727 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-14 05:20:22,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:22,092 INFO L93 Difference]: Finished difference Result 1117 states and 1411 transitions. [2022-07-14 05:20:22,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 05:20:22,093 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2022-07-14 05:20:22,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:22,095 INFO L225 Difference]: With dead ends: 1117 [2022-07-14 05:20:22,096 INFO L226 Difference]: Without dead ends: 598 [2022-07-14 05:20:22,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-07-14 05:20:22,097 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 34 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 05:20:22,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2051 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 05:20:22,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-07-14 05:20:22,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 595. [2022-07-14 05:20:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 564 states have (on average 1.2641843971631206) internal successors, (713), 571 states have internal predecessors, (713), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-07-14 05:20:22,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 745 transitions. [2022-07-14 05:20:22,115 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 745 transitions. Word has length 112 [2022-07-14 05:20:22,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:22,116 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 745 transitions. [2022-07-14 05:20:22,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-14 05:20:22,116 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 745 transitions. [2022-07-14 05:20:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-14 05:20:22,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:22,117 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:20:22,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-14 05:20:22,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-14 05:20:22,340 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:22,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:22,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2135958996, now seen corresponding path program 2 times [2022-07-14 05:20:22,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:22,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566934486] [2022-07-14 05:20:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:22,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:22,381 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:22,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796735551] [2022-07-14 05:20:22,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 05:20:22,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:22,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:22,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:20:22,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-14 05:20:25,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 05:20:25,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 05:20:25,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-14 05:20:25,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:20:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-14 05:20:26,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 05:20:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-14 05:20:26,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:20:26,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566934486] [2022-07-14 05:20:26,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:20:26,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796735551] [2022-07-14 05:20:26,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796735551] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 05:20:26,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 05:20:26,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2022-07-14 05:20:26,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858176415] [2022-07-14 05:20:26,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 05:20:26,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-14 05:20:26,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:20:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-14 05:20:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-14 05:20:26,254 INFO L87 Difference]: Start difference. First operand 595 states and 745 transitions. Second operand has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-14 05:20:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:20:27,165 INFO L93 Difference]: Finished difference Result 1210 states and 1528 transitions. [2022-07-14 05:20:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-14 05:20:27,166 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-07-14 05:20:27,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:20:27,169 INFO L225 Difference]: With dead ends: 1210 [2022-07-14 05:20:27,169 INFO L226 Difference]: Without dead ends: 613 [2022-07-14 05:20:27,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2022-07-14 05:20:27,171 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 283 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 05:20:27,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 3077 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 05:20:27,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-07-14 05:20:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 601. [2022-07-14 05:20:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 570 states have (on average 1.2614035087719297) internal successors, (719), 577 states have internal predecessors, (719), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-07-14 05:20:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 751 transitions. [2022-07-14 05:20:27,194 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 751 transitions. Word has length 116 [2022-07-14 05:20:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:20:27,194 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 751 transitions. [2022-07-14 05:20:27,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-14 05:20:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 751 transitions. [2022-07-14 05:20:27,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-14 05:20:27,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:20:27,196 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:20:27,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-14 05:20:27,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-14 05:20:27,412 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:20:27,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:20:27,412 INFO L85 PathProgramCache]: Analyzing trace with hash -224218713, now seen corresponding path program 3 times [2022-07-14 05:20:27,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:20:27,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428053087] [2022-07-14 05:20:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:20:27,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:20:27,462 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:20:27,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996504542] [2022-07-14 05:20:27,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 05:20:27,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:20:27,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:20:27,469 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:20:27,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process