./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.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 efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 22:51:53,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 22:51:53,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 22:51:53,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 22:51:53,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 22:51:53,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 22:51:53,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 22:51:53,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 22:51:53,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 22:51:53,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 22:51:53,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 22:51:53,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 22:51:53,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 22:51:54,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 22:51:54,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 22:51:54,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 22:51:54,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 22:51:54,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 22:51:54,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 22:51:54,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 22:51:54,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 22:51:54,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 22:51:54,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 22:51:54,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 22:51:54,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 22:51:54,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 22:51:54,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 22:51:54,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 22:51:54,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 22:51:54,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 22:51:54,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 22:51:54,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 22:51:54,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 22:51:54,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 22:51:54,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 22:51:54,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 22:51:54,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 22:51:54,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 22:51:54,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 22:51:54,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 22:51:54,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 22:51:54,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 22:51:54,061 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 22:51:54,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 22:51:54,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 22:51:54,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 22:51:54,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 22:51:54,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 22:51:54,064 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 22:51:54,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 22:51:54,064 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 22:51:54,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 22:51:54,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 22:51:54,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 22:51:54,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 22:51:54,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 22:51:54,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 22:51:54,066 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 22:51:54,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 22:51:54,066 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 22:51:54,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 22:51:54,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 22:51:54,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 22:51:54,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 22:51:54,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:51:54,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 22:51:54,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 22:51:54,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 22:51:54,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 22:51:54,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 22:51:54,069 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 22:51:54,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 22:51:54,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 22:51:54,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 22:51:54,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 [2021-11-06 22:51:54,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 22:51:54,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 22:51:54,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 22:51:54,338 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 22:51:54,343 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 22:51:54,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2021-11-06 22:51:54,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0ce10382/90e74339b8c6473aa5b2bbc7605d324f/FLAGc3e0301ad [2021-11-06 22:51:54,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 22:51:54,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2021-11-06 22:51:54,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0ce10382/90e74339b8c6473aa5b2bbc7605d324f/FLAGc3e0301ad [2021-11-06 22:51:55,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0ce10382/90e74339b8c6473aa5b2bbc7605d324f [2021-11-06 22:51:55,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 22:51:55,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 22:51:55,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 22:51:55,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 22:51:55,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 22:51:55,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:55,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61383d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55, skipping insertion in model container [2021-11-06 22:51:55,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:55,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 22:51:55,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 22:51:55,606 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i[33021,33034] [2021-11-06 22:51:55,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:51:55,760 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 22:51:55,790 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i[33021,33034] [2021-11-06 22:51:55,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:51:55,893 INFO L208 MainTranslator]: Completed translation [2021-11-06 22:51:55,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55 WrapperNode [2021-11-06 22:51:55,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 22:51:55,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 22:51:55,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 22:51:55,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 22:51:55,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:55,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:56,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 22:51:56,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 22:51:56,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 22:51:56,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 22:51:56,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:56,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:56,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:56,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:56,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:56,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:56,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:56,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 22:51:56,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 22:51:56,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 22:51:56,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 22:51:56,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55" (1/1) ... [2021-11-06 22:51:56,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:51:56,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:51:56,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 22:51:56,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 22:51:56,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 22:51:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 22:51:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 22:51:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 22:51:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 22:51:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 22:51:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 22:51:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 22:51:56,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 22:51:56,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 22:51:57,582 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 22:51:57,583 INFO L299 CfgBuilder]: Removed 115 assume(true) statements. [2021-11-06 22:51:57,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:57 BoogieIcfgContainer [2021-11-06 22:51:57,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 22:51:57,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 22:51:57,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 22:51:57,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 22:51:57,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:51:55" (1/3) ... [2021-11-06 22:51:57,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bee4094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:57, skipping insertion in model container [2021-11-06 22:51:57,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:55" (2/3) ... [2021-11-06 22:51:57,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bee4094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:57, skipping insertion in model container [2021-11-06 22:51:57,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:57" (3/3) ... [2021-11-06 22:51:57,597 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test4-3.i [2021-11-06 22:51:57,601 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 22:51:57,601 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-06 22:51:57,648 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 22:51:57,654 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 22:51:57,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-06 22:51:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 260 states have (on average 1.726923076923077) internal successors, (449), 270 states have internal predecessors, (449), 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) [2021-11-06 22:51:57,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 22:51:57,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:57,683 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:51:57,684 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:51:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:57,688 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-06 22:51:57,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:57,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237439340] [2021-11-06 22:51:57,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:57,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:51:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:51:57,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:57,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237439340] [2021-11-06 22:51:57,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237439340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:51:57,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:51:57,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 22:51:57,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045075399] [2021-11-06 22:51:57,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 22:51:57,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:57,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 22:51:57,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 22:51:57,847 INFO L87 Difference]: Start difference. First operand has 271 states, 260 states have (on average 1.726923076923077) internal successors, (449), 270 states have internal predecessors, (449), 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) 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) [2021-11-06 22:51:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:51:57,899 INFO L93 Difference]: Finished difference Result 540 states and 896 transitions. [2021-11-06 22:51:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 22:51:57,900 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 [2021-11-06 22:51:57,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:51:57,908 INFO L225 Difference]: With dead ends: 540 [2021-11-06 22:51:57,908 INFO L226 Difference]: Without dead ends: 217 [2021-11-06 22:51:57,911 INFO L786 BasicCegarLoop]: 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 [2021-11-06 22:51:57,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-06 22:51:57,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-06 22:51:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 216 states have internal predecessors, (282), 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) [2021-11-06 22:51:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-06 22:51:57,949 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-06 22:51:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:51:57,949 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-06 22:51:57,949 INFO L471 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) [2021-11-06 22:51:57,949 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-06 22:51:57,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 22:51:57,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:57,950 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:51:57,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 22:51:57,950 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:51:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:57,954 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-06 22:51:57,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:57,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494437112] [2021-11-06 22:51:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:57,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:51:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:51:58,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:58,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494437112] [2021-11-06 22:51:58,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494437112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:51:58,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:51:58,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:51:58,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041523367] [2021-11-06 22:51:58,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:51:58,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:58,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:51:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:51:58,026 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-06 22:51:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:51:58,065 INFO L93 Difference]: Finished difference Result 432 states and 562 transitions. [2021-11-06 22:51:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:51:58,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 [2021-11-06 22:51:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:51:58,068 INFO L225 Difference]: With dead ends: 432 [2021-11-06 22:51:58,068 INFO L226 Difference]: Without dead ends: 387 [2021-11-06 22:51:58,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:51:58,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-06 22:51:58,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 218. [2021-11-06 22:51:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 208 states have (on average 1.3605769230769231) internal successors, (283), 217 states have internal predecessors, (283), 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) [2021-11-06 22:51:58,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2021-11-06 22:51:58,083 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 8 [2021-11-06 22:51:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:51:58,083 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2021-11-06 22:51:58,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-06 22:51:58,083 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2021-11-06 22:51:58,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 22:51:58,087 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:58,087 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:51:58,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 22:51:58,087 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:51:58,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:58,088 INFO L85 PathProgramCache]: Analyzing trace with hash -137963571, now seen corresponding path program 1 times [2021-11-06 22:51:58,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:58,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681317890] [2021-11-06 22:51:58,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:58,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:58,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:51:58,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772006351] [2021-11-06 22:51:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:58,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:51:58,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:51:58,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:51:58,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 22:51:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:51:58,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:51:58,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:51:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:51:58,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:58,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681317890] [2021-11-06 22:51:58,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:51:58,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772006351] [2021-11-06 22:51:58,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772006351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:51:58,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:51:58,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:51:58,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344162262] [2021-11-06 22:51:58,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:51:58,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:58,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:51:58,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:51:58,633 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-06 22:51:58,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:51:58,696 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2021-11-06 22:51:58,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:51:58,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-11-06 22:51:58,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:51:58,698 INFO L225 Difference]: With dead ends: 454 [2021-11-06 22:51:58,698 INFO L226 Difference]: Without dead ends: 239 [2021-11-06 22:51:58,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:51:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-06 22:51:58,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-11-06 22:51:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 228 states have (on average 1.3289473684210527) internal successors, (303), 237 states have internal predecessors, (303), 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) [2021-11-06 22:51:58,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 303 transitions. [2021-11-06 22:51:58,710 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 303 transitions. Word has length 106 [2021-11-06 22:51:58,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:51:58,711 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 303 transitions. [2021-11-06 22:51:58,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-06 22:51:58,711 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 303 transitions. [2021-11-06 22:51:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 22:51:58,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:58,714 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:51:58,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 22:51:58,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:51:58,936 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:51:58,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:58,937 INFO L85 PathProgramCache]: Analyzing trace with hash 62310097, now seen corresponding path program 1 times [2021-11-06 22:51:58,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:58,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821809992] [2021-11-06 22:51:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:58,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:58,958 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:51:58,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728410320] [2021-11-06 22:51:58,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:58,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:51:58,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:51:58,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:51:58,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 22:51:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:51:59,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:51:59,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:51:59,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:51:59,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:59,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821809992] [2021-11-06 22:51:59,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:51:59,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728410320] [2021-11-06 22:51:59,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728410320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:51:59,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:51:59,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:51:59,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347944303] [2021-11-06 22:51:59,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:51:59,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:59,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:51:59,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:51:59,444 INFO L87 Difference]: Start difference. First operand 238 states and 303 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-06 22:51:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:51:59,516 INFO L93 Difference]: Finished difference Result 494 states and 634 transitions. [2021-11-06 22:51:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:51:59,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-11-06 22:51:59,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:51:59,519 INFO L225 Difference]: With dead ends: 494 [2021-11-06 22:51:59,519 INFO L226 Difference]: Without dead ends: 259 [2021-11-06 22:51:59,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:51:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-06 22:51:59,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2021-11-06 22:51:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 248 states have (on average 1.3024193548387097) internal successors, (323), 257 states have internal predecessors, (323), 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) [2021-11-06 22:51:59,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2021-11-06 22:51:59,538 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 106 [2021-11-06 22:51:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:51:59,540 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2021-11-06 22:51:59,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-06 22:51:59,540 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2021-11-06 22:51:59,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 22:51:59,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:59,549 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:51:59,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 22:51:59,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-06 22:51:59,763 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:51:59,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash -426500019, now seen corresponding path program 1 times [2021-11-06 22:51:59,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:59,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031033553] [2021-11-06 22:51:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:59,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:59,782 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:51:59,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239636504] [2021-11-06 22:51:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:59,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:51:59,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:51:59,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:51:59,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 22:52:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:52:00,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:52:00,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:52:00,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:00,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031033553] [2021-11-06 22:52:00,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:00,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239636504] [2021-11-06 22:52:00,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239636504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:52:00,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:52:00,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:52:00,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308102181] [2021-11-06 22:52:00,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:52:00,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:00,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:52:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:52:00,263 INFO L87 Difference]: Start difference. First operand 258 states and 323 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 22:52:00,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:00,322 INFO L93 Difference]: Finished difference Result 505 states and 635 transitions. [2021-11-06 22:52:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:52:00,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 106 [2021-11-06 22:52:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:00,323 INFO L225 Difference]: With dead ends: 505 [2021-11-06 22:52:00,323 INFO L226 Difference]: Without dead ends: 250 [2021-11-06 22:52:00,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:52:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-06 22:52:00,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-11-06 22:52:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 234 states have (on average 1.2905982905982907) internal successors, (302), 243 states have internal predecessors, (302), 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) [2021-11-06 22:52:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions. [2021-11-06 22:52:00,329 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 106 [2021-11-06 22:52:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:00,330 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions. [2021-11-06 22:52:00,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 22:52:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions. [2021-11-06 22:52:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 22:52:00,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:00,331 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:52:00,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 22:52:00,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:00,544 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:52:00,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1791075329, now seen corresponding path program 1 times [2021-11-06 22:52:00,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:00,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891883539] [2021-11-06 22:52:00,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:00,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:00,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:00,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217987545] [2021-11-06 22:52:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:00,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:00,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:00,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:52:00,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 22:52:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:52:00,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:52:00,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:52:01,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:01,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891883539] [2021-11-06 22:52:01,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:01,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217987545] [2021-11-06 22:52:01,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217987545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:52:01,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:52:01,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:52:01,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645171913] [2021-11-06 22:52:01,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:52:01,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:01,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:52:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:52:01,047 INFO L87 Difference]: Start difference. First operand 244 states and 302 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 22:52:01,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:01,117 INFO L93 Difference]: Finished difference Result 566 states and 702 transitions. [2021-11-06 22:52:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:52:01,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 106 [2021-11-06 22:52:01,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:01,120 INFO L225 Difference]: With dead ends: 566 [2021-11-06 22:52:01,120 INFO L226 Difference]: Without dead ends: 325 [2021-11-06 22:52:01,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:52:01,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-06 22:52:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 230. [2021-11-06 22:52:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 220 states have (on average 1.2772727272727273) internal successors, (281), 229 states have internal predecessors, (281), 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) [2021-11-06 22:52:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2021-11-06 22:52:01,126 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 106 [2021-11-06 22:52:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:01,126 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2021-11-06 22:52:01,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 22:52:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2021-11-06 22:52:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 22:52:01,127 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:01,127 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:52:01,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 22:52:01,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:01,347 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:52:01,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:01,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1369189005, now seen corresponding path program 1 times [2021-11-06 22:52:01,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:01,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374122973] [2021-11-06 22:52:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:01,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:01,371 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:01,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209420403] [2021-11-06 22:52:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:01,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:01,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:01,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:52:01,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 22:52:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:52:01,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:52:01,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:52:01,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:01,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374122973] [2021-11-06 22:52:01,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:01,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209420403] [2021-11-06 22:52:01,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209420403] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:52:01,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:52:01,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-06 22:52:01,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328932897] [2021-11-06 22:52:01,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:52:01,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:52:01,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:52:01,912 INFO L87 Difference]: Start difference. First operand 230 states and 281 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 22:52:01,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:01,937 INFO L93 Difference]: Finished difference Result 638 states and 780 transitions. [2021-11-06 22:52:01,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:52:01,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 106 [2021-11-06 22:52:01,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:01,940 INFO L225 Difference]: With dead ends: 638 [2021-11-06 22:52:01,940 INFO L226 Difference]: Without dead ends: 593 [2021-11-06 22:52:01,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:52:01,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-06 22:52:01,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 412. [2021-11-06 22:52:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 402 states have (on average 1.2512437810945274) internal successors, (503), 411 states have internal predecessors, (503), 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) [2021-11-06 22:52:01,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 503 transitions. [2021-11-06 22:52:01,951 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 503 transitions. Word has length 106 [2021-11-06 22:52:01,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:01,952 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 503 transitions. [2021-11-06 22:52:01,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 22:52:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 503 transitions. [2021-11-06 22:52:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-06 22:52:01,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:01,954 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:52:01,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-06 22:52:02,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:02,163 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:52:02,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:02,164 INFO L85 PathProgramCache]: Analyzing trace with hash 548829604, now seen corresponding path program 2 times [2021-11-06 22:52:02,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:02,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737776741] [2021-11-06 22:52:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:02,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:02,184 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:02,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482579298] [2021-11-06 22:52:02,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:52:02,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:02,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:02,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:52:02,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 22:52:02,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 22:52:02,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:52:02,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 22:52:02,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-06 22:52:03,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:03,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737776741] [2021-11-06 22:52:03,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:03,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482579298] [2021-11-06 22:52:03,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482579298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:52:03,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:52:03,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:52:03,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144109451] [2021-11-06 22:52:03,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:52:03,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:03,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:52:03,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:52:03,553 INFO L87 Difference]: Start difference. First operand 412 states and 503 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 22:52:03,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:03,771 INFO L93 Difference]: Finished difference Result 677 states and 831 transitions. [2021-11-06 22:52:03,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:52:03,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 204 [2021-11-06 22:52:03,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:03,777 INFO L225 Difference]: With dead ends: 677 [2021-11-06 22:52:03,777 INFO L226 Difference]: Without dead ends: 410 [2021-11-06 22:52:03,778 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:52:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-06 22:52:03,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-06 22:52:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 400 states have (on average 1.25) internal successors, (500), 409 states have internal predecessors, (500), 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) [2021-11-06 22:52:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 500 transitions. [2021-11-06 22:52:03,788 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 500 transitions. Word has length 204 [2021-11-06 22:52:03,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:03,788 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 500 transitions. [2021-11-06 22:52:03,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-06 22:52:03,788 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 500 transitions. [2021-11-06 22:52:03,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-06 22:52:03,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:03,792 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 22:52:03,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 22:52:04,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:04,008 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:52:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:04,008 INFO L85 PathProgramCache]: Analyzing trace with hash -7696284, now seen corresponding path program 1 times [2021-11-06 22:52:04,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:04,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42504745] [2021-11-06 22:52:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:04,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:04,046 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:04,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107404899] [2021-11-06 22:52:04,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:04,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:04,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:04,048 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) [2021-11-06 22:52:04,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 22:52:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:52:04,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 22:52:04,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:52:05,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:05,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42504745] [2021-11-06 22:52:05,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:05,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107404899] [2021-11-06 22:52:05,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107404899] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:52:05,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:52:05,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-06 22:52:05,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528045412] [2021-11-06 22:52:05,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 22:52:05,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 22:52:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:52:05,044 INFO L87 Difference]: Start difference. First operand 410 states and 500 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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) [2021-11-06 22:52:05,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:05,078 INFO L93 Difference]: Finished difference Result 818 states and 999 transitions. [2021-11-06 22:52:05,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 22:52:05,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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 211 [2021-11-06 22:52:05,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:05,082 INFO L225 Difference]: With dead ends: 818 [2021-11-06 22:52:05,082 INFO L226 Difference]: Without dead ends: 773 [2021-11-06 22:52:05,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:52:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-11-06 22:52:05,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 592. [2021-11-06 22:52:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 582 states have (on average 1.2405498281786942) internal successors, (722), 591 states have internal predecessors, (722), 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) [2021-11-06 22:52:05,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 722 transitions. [2021-11-06 22:52:05,095 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 722 transitions. Word has length 211 [2021-11-06 22:52:05,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:05,096 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 722 transitions. [2021-11-06 22:52:05,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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) [2021-11-06 22:52:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 722 transitions. [2021-11-06 22:52:05,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-06 22:52:05,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:05,100 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:52:05,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-06 22:52:05,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:05,320 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:52:05,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:05,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1450675781, now seen corresponding path program 2 times [2021-11-06 22:52:05,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:05,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429364194] [2021-11-06 22:52:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:05,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:05,338 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:05,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135234512] [2021-11-06 22:52:05,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:52:05,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:05,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:05,340 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) [2021-11-06 22:52:05,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 22:52:05,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 22:52:05,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:52:05,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:52:05,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:52:06,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:06,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429364194] [2021-11-06 22:52:06,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:06,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135234512] [2021-11-06 22:52:06,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135234512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:52:06,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:52:06,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-06 22:52:06,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102954459] [2021-11-06 22:52:06,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 22:52:06,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:06,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 22:52:06,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 22:52:06,653 INFO L87 Difference]: Start difference. First operand 592 states and 722 transitions. Second operand has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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) [2021-11-06 22:52:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:06,699 INFO L93 Difference]: Finished difference Result 1000 states and 1221 transitions. [2021-11-06 22:52:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 22:52:06,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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 309 [2021-11-06 22:52:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:06,703 INFO L225 Difference]: With dead ends: 1000 [2021-11-06 22:52:06,703 INFO L226 Difference]: Without dead ends: 955 [2021-11-06 22:52:06,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 22:52:06,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-11-06 22:52:06,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 774. [2021-11-06 22:52:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 764 states have (on average 1.2356020942408377) internal successors, (944), 773 states have internal predecessors, (944), 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) [2021-11-06 22:52:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 944 transitions. [2021-11-06 22:52:06,741 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 944 transitions. Word has length 309 [2021-11-06 22:52:06,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:06,742 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 944 transitions. [2021-11-06 22:52:06,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.5) internal successors, (309), 6 states have internal predecessors, (309), 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) [2021-11-06 22:52:06,742 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 944 transitions. [2021-11-06 22:52:06,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-06 22:52:06,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:06,747 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:52:06,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 22:52:06,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 22:52:06,964 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:52:06,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:06,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1217332562, now seen corresponding path program 3 times [2021-11-06 22:52:06,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:06,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906138015] [2021-11-06 22:52:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:06,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:06,984 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:06,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579347774] [2021-11-06 22:52:06,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 22:52:06,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:06,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:06,986 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) [2021-11-06 22:52:06,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 22:52:07,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 22:52:07,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:52:07,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:52:07,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2021-11-06 22:52:09,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:09,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906138015] [2021-11-06 22:52:09,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:09,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579347774] [2021-11-06 22:52:09,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579347774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:52:09,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:52:09,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:52:09,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563434529] [2021-11-06 22:52:09,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:52:09,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:09,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:52:09,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:52:09,329 INFO L87 Difference]: Start difference. First operand 774 states and 944 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-11-06 22:52:09,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:09,380 INFO L93 Difference]: Finished difference Result 1490 states and 1822 transitions. [2021-11-06 22:52:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:52:09,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 407 [2021-11-06 22:52:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:09,385 INFO L225 Difference]: With dead ends: 1490 [2021-11-06 22:52:09,385 INFO L226 Difference]: Without dead ends: 772 [2021-11-06 22:52:09,386 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:52:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-06 22:52:09,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2021-11-06 22:52:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 762 states have (on average 1.2349081364829397) internal successors, (941), 771 states have internal predecessors, (941), 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) [2021-11-06 22:52:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 941 transitions. [2021-11-06 22:52:09,402 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 941 transitions. Word has length 407 [2021-11-06 22:52:09,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:09,403 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 941 transitions. [2021-11-06 22:52:09,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-11-06 22:52:09,403 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 941 transitions. [2021-11-06 22:52:09,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-11-06 22:52:09,409 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:09,409 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:52:09,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 22:52:09,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:09,636 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:52:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2077967202, now seen corresponding path program 1 times [2021-11-06 22:52:09,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:09,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335135036] [2021-11-06 22:52:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:09,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:09,691 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:09,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824402183] [2021-11-06 22:52:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:09,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:09,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:09,694 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) [2021-11-06 22:52:09,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 22:52:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:52:10,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 22:52:10,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:52:11,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:11,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335135036] [2021-11-06 22:52:11,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:11,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824402183] [2021-11-06 22:52:11,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824402183] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:52:11,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:52:11,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-06 22:52:11,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402831412] [2021-11-06 22:52:11,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 22:52:11,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:11,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 22:52:11,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 22:52:11,501 INFO L87 Difference]: Start difference. First operand 772 states and 941 transitions. Second operand has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 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) [2021-11-06 22:52:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:11,551 INFO L93 Difference]: Finished difference Result 1180 states and 1440 transitions. [2021-11-06 22:52:11,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 22:52:11,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 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 414 [2021-11-06 22:52:11,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:11,556 INFO L225 Difference]: With dead ends: 1180 [2021-11-06 22:52:11,556 INFO L226 Difference]: Without dead ends: 1135 [2021-11-06 22:52:11,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 22:52:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-06 22:52:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 954. [2021-11-06 22:52:11,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 944 states have (on average 1.2319915254237288) internal successors, (1163), 953 states have internal predecessors, (1163), 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) [2021-11-06 22:52:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1163 transitions. [2021-11-06 22:52:11,575 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1163 transitions. Word has length 414 [2021-11-06 22:52:11,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:11,576 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1163 transitions. [2021-11-06 22:52:11,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 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) [2021-11-06 22:52:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1163 transitions. [2021-11-06 22:52:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2021-11-06 22:52:11,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:11,580 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:52:11,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 22:52:11,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-06 22:52:11,807 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:52:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:11,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1990200007, now seen corresponding path program 2 times [2021-11-06 22:52:11,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:11,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033294074] [2021-11-06 22:52:11,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:11,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:11,828 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:11,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689756223] [2021-11-06 22:52:11,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:52:11,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:11,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:11,829 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) [2021-11-06 22:52:11,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 22:52:12,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 22:52:12,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:52:12,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 22:52:12,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:52:13,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:13,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033294074] [2021-11-06 22:52:13,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:13,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689756223] [2021-11-06 22:52:13,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689756223] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:52:13,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:52:13,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-06 22:52:13,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618399674] [2021-11-06 22:52:13,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 22:52:13,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:13,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 22:52:13,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 22:52:13,935 INFO L87 Difference]: Start difference. First operand 954 states and 1163 transitions. Second operand has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 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) [2021-11-06 22:52:14,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:14,011 INFO L93 Difference]: Finished difference Result 1362 states and 1662 transitions. [2021-11-06 22:52:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 22:52:14,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 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 512 [2021-11-06 22:52:14,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:14,017 INFO L225 Difference]: With dead ends: 1362 [2021-11-06 22:52:14,017 INFO L226 Difference]: Without dead ends: 1317 [2021-11-06 22:52:14,018 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 22:52:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2021-11-06 22:52:14,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1136. [2021-11-06 22:52:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1126 states have (on average 1.2300177619893429) internal successors, (1385), 1135 states have internal predecessors, (1385), 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) [2021-11-06 22:52:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1385 transitions. [2021-11-06 22:52:14,047 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1385 transitions. Word has length 512 [2021-11-06 22:52:14,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:14,047 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1385 transitions. [2021-11-06 22:52:14,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 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) [2021-11-06 22:52:14,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1385 transitions. [2021-11-06 22:52:14,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-06 22:52:14,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:14,054 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:52:14,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 22:52:14,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 22:52:14,255 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 22:52:14,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:14,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1529530032, now seen corresponding path program 3 times [2021-11-06 22:52:14,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:14,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057646764] [2021-11-06 22:52:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:14,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:14,288 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:14,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419397683] [2021-11-06 22:52:14,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 22:52:14,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:14,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:14,290 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) [2021-11-06 22:52:14,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15