./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 834766c90c3d5af368509ae691087999af545dba19d7eed6a5d75f823cbb2437 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 22:51:52,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 22:51:52,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 22:51:52,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 22:51:52,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 22:51:52,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 22:51:52,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 22:51:52,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 22:51:52,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 22:51:52,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 22:51:52,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 22:51:52,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 22:51:52,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 22:51:52,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 22:51:52,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 22:51:52,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 22:51:52,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 22:51:52,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 22:51:52,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 22:51:52,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 22:51:52,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 22:51:52,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 22:51:52,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 22:51:52,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 22:51:52,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 22:51:52,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 22:51:52,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 22:51:52,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 22:51:52,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 22:51:52,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 22:51:52,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 22:51:52,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 22:51:52,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 22:51:52,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 22:51:52,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 22:51:52,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 22:51:52,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 22:51:52,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 22:51:52,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 22:51:52,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 22:51:52,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 22:51:52,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 22:51:52,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 22:51:52,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 22:51:52,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 22:51:52,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 22:51:52,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 22:51:52,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 22:51:52,173 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 22:51:52,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 22:51:52,173 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 22:51:52,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 22:51:52,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 22:51:52,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 22:51:52,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 22:51:52,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 22:51:52,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 22:51:52,175 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 22:51:52,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 22:51:52,175 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 22:51:52,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 22:51:52,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 22:51:52,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 22:51:52,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 22:51:52,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:51:52,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 22:51:52,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 22:51:52,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 22:51:52,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 22:51:52,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 22:51:52,184 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 22:51:52,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 22:51:52,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 22:51:52,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 22:51:52,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 834766c90c3d5af368509ae691087999af545dba19d7eed6a5d75f823cbb2437 [2021-11-06 22:51:52,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 22:51:52,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 22:51:52,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 22:51:52,367 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 22:51:52,368 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 22:51:52,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i [2021-11-06 22:51:52,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80e658aa8/4b260c2fe91649beaea4a3ea424f9ade/FLAG7d819f557 [2021-11-06 22:51:52,867 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 22:51:52,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i [2021-11-06 22:51:52,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80e658aa8/4b260c2fe91649beaea4a3ea424f9ade/FLAG7d819f557 [2021-11-06 22:51:52,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80e658aa8/4b260c2fe91649beaea4a3ea424f9ade [2021-11-06 22:51:52,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 22:51:52,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 22:51:52,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 22:51:52,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 22:51:52,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 22:51:52,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:52" (1/1) ... [2021-11-06 22:51:52,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d8e046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:52, skipping insertion in model container [2021-11-06 22:51:52,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:52" (1/1) ... [2021-11-06 22:51:52,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 22:51:52,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 22:51:53,258 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_test4-2.i[33021,33034] [2021-11-06 22:51:53,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:51:53,404 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 22:51:53,432 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_test4-2.i[33021,33034] [2021-11-06 22:51:53,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:51:53,515 INFO L208 MainTranslator]: Completed translation [2021-11-06 22:51:53,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53 WrapperNode [2021-11-06 22:51:53,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 22:51:53,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 22:51:53,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 22:51:53,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 22:51:53,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53" (1/1) ... [2021-11-06 22:51:53,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53" (1/1) ... [2021-11-06 22:51:53,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 22:51:53,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 22:51:53,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 22:51:53,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 22:51:53,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53" (1/1) ... [2021-11-06 22:51:53,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53" (1/1) ... [2021-11-06 22:51:53,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53" (1/1) ... [2021-11-06 22:51:53,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53" (1/1) ... [2021-11-06 22:51:53,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53" (1/1) ... [2021-11-06 22:51:53,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53" (1/1) ... [2021-11-06 22:51:53,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53" (1/1) ... [2021-11-06 22:51:53,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 22:51:53,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 22:51:53,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 22:51:53,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 22:51:53,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53" (1/1) ... [2021-11-06 22:51:53,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:51:53,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:51:53,747 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 22:51:53,769 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 22:51:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 22:51:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 22:51:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 22:51:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 22:51:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 22:51:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 22:51:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 22:51:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 22:51:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 22:51:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 22:51:54,830 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 22:51:54,830 INFO L299 CfgBuilder]: Removed 107 assume(true) statements. [2021-11-06 22:51:54,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:54 BoogieIcfgContainer [2021-11-06 22:51:54,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 22:51:54,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 22:51:54,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 22:51:54,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 22:51:54,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:51:52" (1/3) ... [2021-11-06 22:51:54,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7190c958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:54, skipping insertion in model container [2021-11-06 22:51:54,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:53" (2/3) ... [2021-11-06 22:51:54,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7190c958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:54, skipping insertion in model container [2021-11-06 22:51:54,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:54" (3/3) ... [2021-11-06 22:51:54,839 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test4-2.i [2021-11-06 22:51:54,842 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 22:51:54,842 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-06 22:51:54,872 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 22:51:54,877 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 22:51:54,877 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-06 22:51:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 239 states have (on average 1.7238493723849373) internal successors, (412), 249 states have internal predecessors, (412), 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 22:51:54,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 22:51:54,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:54,893 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:51:54,894 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 22:51:54,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:54,898 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-06 22:51:54,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:54,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613325426] [2021-11-06 22:51:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:54,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:51:55,021 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 22:51:55,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:55,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613325426] [2021-11-06 22:51:55,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613325426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:51:55,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:51:55,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 22:51:55,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410061093] [2021-11-06 22:51:55,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 22:51:55,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:55,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 22:51:55,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 22:51:55,041 INFO L87 Difference]: Start difference. First operand has 250 states, 239 states have (on average 1.7238493723849373) internal successors, (412), 249 states have internal predecessors, (412), 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 22:51:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:51:55,071 INFO L93 Difference]: Finished difference Result 498 states and 822 transitions. [2021-11-06 22:51:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 22:51:55,072 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 22:51:55,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:51:55,082 INFO L225 Difference]: With dead ends: 498 [2021-11-06 22:51:55,082 INFO L226 Difference]: Without dead ends: 217 [2021-11-06 22:51:55,084 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 22:51:55,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-06 22:51:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-06 22:51:55,123 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 22:51:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-06 22:51:55,126 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-06 22:51:55,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:51:55,126 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-06 22:51:55,126 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 22:51:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-06 22:51:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 22:51:55,127 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:55,127 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:51:55,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 22:51:55,128 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 22:51:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-06 22:51:55,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:55,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383649815] [2021-11-06 22:51:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:55,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:51:55,162 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 22:51:55,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:55,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383649815] [2021-11-06 22:51:55,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383649815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:51:55,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:51:55,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:51:55,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892876297] [2021-11-06 22:51:55,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:51:55,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:51:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:51:55,166 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 22:51:55,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:51:55,190 INFO L93 Difference]: Finished difference Result 432 states and 562 transitions. [2021-11-06 22:51:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:51:55,191 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 22:51:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:51:55,193 INFO L225 Difference]: With dead ends: 432 [2021-11-06 22:51:55,193 INFO L226 Difference]: Without dead ends: 387 [2021-11-06 22:51:55,194 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 22:51:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-06 22:51:55,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 218. [2021-11-06 22:51:55,205 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 22:51:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2021-11-06 22:51:55,206 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 8 [2021-11-06 22:51:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:51:55,207 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2021-11-06 22:51:55,207 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 22:51:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2021-11-06 22:51:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 22:51:55,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:55,210 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 22:51:55,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 22:51:55,211 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 22:51:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash -137963571, now seen corresponding path program 1 times [2021-11-06 22:51:55,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:55,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435310780] [2021-11-06 22:51:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:55,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:55,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:51:55,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141883210] [2021-11-06 22:51:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:55,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:51:55,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:51:55,246 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 22:51:55,278 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 22:51:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:51:55,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:51:55,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:51:55,642 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 22:51:55,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:55,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435310780] [2021-11-06 22:51:55,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:51:55,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141883210] [2021-11-06 22:51:55,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141883210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:51:55,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:51:55,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:51:55,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257298820] [2021-11-06 22:51:55,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:51:55,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:55,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:51:55,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:51:55,645 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 22:51:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:51:55,699 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2021-11-06 22:51:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:51:55,700 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 22:51:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:51:55,701 INFO L225 Difference]: With dead ends: 454 [2021-11-06 22:51:55,701 INFO L226 Difference]: Without dead ends: 239 [2021-11-06 22:51:55,702 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 22:51:55,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-06 22:51:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-11-06 22:51:55,709 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 22:51:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 303 transitions. [2021-11-06 22:51:55,710 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 303 transitions. Word has length 106 [2021-11-06 22:51:55,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:51:55,710 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 303 transitions. [2021-11-06 22:51:55,710 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 22:51:55,710 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 303 transitions. [2021-11-06 22:51:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 22:51:55,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:55,713 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 22:51:55,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 22:51:55,931 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 22:51:55,932 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 22:51:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash 62310097, now seen corresponding path program 1 times [2021-11-06 22:51:55,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:55,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045229204] [2021-11-06 22:51:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:55,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:55,973 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:51:55,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440944984] [2021-11-06 22:51:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:55,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:51:55,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:51:55,988 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 22:51:56,035 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 22:51:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:51:56,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:51:56,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:51:56,419 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 22:51:56,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:56,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045229204] [2021-11-06 22:51:56,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:51:56,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440944984] [2021-11-06 22:51:56,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440944984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:51:56,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:51:56,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:51:56,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875660538] [2021-11-06 22:51:56,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:51:56,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:51:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:51:56,422 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 22:51:56,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:51:56,478 INFO L93 Difference]: Finished difference Result 494 states and 634 transitions. [2021-11-06 22:51:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:51:56,479 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 22:51:56,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:51:56,480 INFO L225 Difference]: With dead ends: 494 [2021-11-06 22:51:56,480 INFO L226 Difference]: Without dead ends: 259 [2021-11-06 22:51:56,480 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 22:51:56,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-06 22:51:56,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2021-11-06 22:51:56,485 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 22:51:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2021-11-06 22:51:56,486 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 106 [2021-11-06 22:51:56,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:51:56,486 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2021-11-06 22:51:56,486 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 22:51:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2021-11-06 22:51:56,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 22:51:56,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:56,488 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 22:51:56,522 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 22:51:56,706 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 22:51:56,706 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 22:51:56,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:56,707 INFO L85 PathProgramCache]: Analyzing trace with hash -426500019, now seen corresponding path program 1 times [2021-11-06 22:51:56,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:56,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754523236] [2021-11-06 22:51:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:56,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:56,718 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:51:56,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836627615] [2021-11-06 22:51:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:56,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:51:56,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:51:56,736 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 22:51:56,737 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 22:51:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:51:56,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:51:56,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:51:57,136 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 22:51:57,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:57,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754523236] [2021-11-06 22:51:57,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:51:57,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836627615] [2021-11-06 22:51:57,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836627615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:51:57,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:51:57,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:51:57,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409375173] [2021-11-06 22:51:57,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:51:57,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:51:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:51:57,139 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 22:51:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:51:57,190 INFO L93 Difference]: Finished difference Result 505 states and 635 transitions. [2021-11-06 22:51:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:51:57,191 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 22:51:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:51:57,192 INFO L225 Difference]: With dead ends: 505 [2021-11-06 22:51:57,192 INFO L226 Difference]: Without dead ends: 250 [2021-11-06 22:51:57,192 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 22:51:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-06 22:51:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-11-06 22:51:57,196 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 22:51:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions. [2021-11-06 22:51:57,196 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 106 [2021-11-06 22:51:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:51:57,197 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions. [2021-11-06 22:51:57,197 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 22:51:57,197 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions. [2021-11-06 22:51:57,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 22:51:57,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:57,198 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 22:51:57,233 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 22:51:57,416 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 22:51:57,416 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 22:51:57,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1791075329, now seen corresponding path program 1 times [2021-11-06 22:51:57,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:57,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486507249] [2021-11-06 22:51:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:57,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:57,428 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:51:57,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001295503] [2021-11-06 22:51:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:57,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:51:57,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:51:57,429 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 22:51:57,430 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 22:51:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:51:57,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:51:57,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:51:57,805 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 22:51:57,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:57,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486507249] [2021-11-06 22:51:57,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:51:57,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001295503] [2021-11-06 22:51:57,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001295503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:51:57,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:51:57,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:51:57,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698426275] [2021-11-06 22:51:57,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:51:57,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:57,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:51:57,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:51:57,807 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 22:51:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:51:57,865 INFO L93 Difference]: Finished difference Result 566 states and 702 transitions. [2021-11-06 22:51:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:51:57,866 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 22:51:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:51:57,867 INFO L225 Difference]: With dead ends: 566 [2021-11-06 22:51:57,867 INFO L226 Difference]: Without dead ends: 325 [2021-11-06 22:51:57,867 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 22:51:57,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-06 22:51:57,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 230. [2021-11-06 22:51:57,871 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 22:51:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2021-11-06 22:51:57,871 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 106 [2021-11-06 22:51:57,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:51:57,872 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2021-11-06 22:51:57,872 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 22:51:57,872 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2021-11-06 22:51:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 22:51:57,873 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:57,873 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 22:51:57,891 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 22:51:58,090 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 22:51:58,091 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 22:51:58,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:58,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1369189005, now seen corresponding path program 1 times [2021-11-06 22:51:58,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:58,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478752041] [2021-11-06 22:51:58,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:58,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:58,125 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:51:58,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135163583] [2021-11-06 22:51:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:58,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:51:58,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:51:58,144 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 22:51:58,155 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 22:51:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:51:58,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:51:58,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:51:58,656 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 22:51:58,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:58,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478752041] [2021-11-06 22:51:58,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:51:58,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135163583] [2021-11-06 22:51:58,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135163583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:51:58,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:51:58,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-06 22:51:58,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092155409] [2021-11-06 22:51:58,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:51:58,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:51:58,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:51:58,657 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 22:51:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:51:58,678 INFO L93 Difference]: Finished difference Result 638 states and 780 transitions. [2021-11-06 22:51:58,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:51:58,678 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 22:51:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:51:58,680 INFO L225 Difference]: With dead ends: 638 [2021-11-06 22:51:58,680 INFO L226 Difference]: Without dead ends: 593 [2021-11-06 22:51:58,681 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 22:51:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-06 22:51:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 412. [2021-11-06 22:51:58,687 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 22:51:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 503 transitions. [2021-11-06 22:51:58,687 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 503 transitions. Word has length 106 [2021-11-06 22:51:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:51:58,688 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 503 transitions. [2021-11-06 22:51:58,688 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 22:51:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 503 transitions. [2021-11-06 22:51:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-06 22:51:58,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:51:58,689 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 22:51:58,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 22:51:58,889 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 22:51:58,890 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 22:51:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:51:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash 548829604, now seen corresponding path program 2 times [2021-11-06 22:51:58,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:51:58,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572701184] [2021-11-06 22:51:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:51:58,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:51:58,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:51:58,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574138799] [2021-11-06 22:51:58,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:51:58,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:51:58,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:51:58,904 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 22:51:58,935 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 22:51:59,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 22:51:59,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:51:59,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 22:51:59,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:51:59,996 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 22:51:59,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:51:59,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572701184] [2021-11-06 22:51:59,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:51:59,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574138799] [2021-11-06 22:51:59,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574138799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:51:59,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:51:59,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:51:59,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207629245] [2021-11-06 22:51:59,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:51:59,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:51:59,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:51:59,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:51:59,999 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 22:52:00,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:00,285 INFO L93 Difference]: Finished difference Result 677 states and 831 transitions. [2021-11-06 22:52:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:52:00,285 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 22:52:00,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:00,287 INFO L225 Difference]: With dead ends: 677 [2021-11-06 22:52:00,288 INFO L226 Difference]: Without dead ends: 410 [2021-11-06 22:52:00,289 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 22:52:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-06 22:52:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-06 22:52:00,294 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 22:52:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 500 transitions. [2021-11-06 22:52:00,310 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 500 transitions. Word has length 204 [2021-11-06 22:52:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:00,310 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 500 transitions. [2021-11-06 22:52:00,311 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 22:52:00,311 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 500 transitions. [2021-11-06 22:52:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-06 22:52:00,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:00,312 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 22:52:00,331 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 22:52:00,529 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 22:52:00,530 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 22:52:00,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:00,530 INFO L85 PathProgramCache]: Analyzing trace with hash -7696284, now seen corresponding path program 1 times [2021-11-06 22:52:00,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:00,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120542746] [2021-11-06 22:52:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:00,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:00,544 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:00,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318065117] [2021-11-06 22:52:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:00,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:00,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:00,568 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 22:52:00,595 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 22:52:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:52:01,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 22:52:01,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:01,462 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 22:52:01,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:01,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120542746] [2021-11-06 22:52:01,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:01,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318065117] [2021-11-06 22:52:01,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318065117] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:52:01,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:52:01,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-06 22:52:01,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3887451] [2021-11-06 22:52:01,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 22:52:01,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 22:52:01,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:52:01,465 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 22:52:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:01,498 INFO L93 Difference]: Finished difference Result 818 states and 999 transitions. [2021-11-06 22:52:01,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 22:52:01,499 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 22:52:01,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:01,501 INFO L225 Difference]: With dead ends: 818 [2021-11-06 22:52:01,501 INFO L226 Difference]: Without dead ends: 773 [2021-11-06 22:52:01,501 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 22:52:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-11-06 22:52:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 592. [2021-11-06 22:52:01,510 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 22:52:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 722 transitions. [2021-11-06 22:52:01,511 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 722 transitions. Word has length 211 [2021-11-06 22:52:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:01,511 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 722 transitions. [2021-11-06 22:52:01,511 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 22:52:01,511 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 722 transitions. [2021-11-06 22:52:01,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-06 22:52:01,513 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:01,514 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 22:52:01,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 22:52:01,747 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 22:52:01,748 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 22:52:01,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:01,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1450675781, now seen corresponding path program 2 times [2021-11-06 22:52:01,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:01,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78039770] [2021-11-06 22:52:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:01,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:01,763 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:01,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787296763] [2021-11-06 22:52:01,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:52:01,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:01,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:01,766 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 22:52:01,767 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 22:52:02,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 22:52:02,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:52:02,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:52:02,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:03,123 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 22:52:03,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:03,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78039770] [2021-11-06 22:52:03,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:03,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787296763] [2021-11-06 22:52:03,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787296763] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:52:03,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:52:03,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-06 22:52:03,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617945470] [2021-11-06 22:52:03,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 22:52:03,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:03,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 22:52:03,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 22:52:03,127 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 22:52:03,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:03,179 INFO L93 Difference]: Finished difference Result 1000 states and 1221 transitions. [2021-11-06 22:52:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 22:52:03,179 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 22:52:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:03,182 INFO L225 Difference]: With dead ends: 1000 [2021-11-06 22:52:03,182 INFO L226 Difference]: Without dead ends: 955 [2021-11-06 22:52:03,183 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 22:52:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2021-11-06 22:52:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 774. [2021-11-06 22:52:03,195 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 22:52:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 944 transitions. [2021-11-06 22:52:03,196 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 944 transitions. Word has length 309 [2021-11-06 22:52:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:03,197 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 944 transitions. [2021-11-06 22:52:03,197 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 22:52:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 944 transitions. [2021-11-06 22:52:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-06 22:52:03,200 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:03,200 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 22:52:03,237 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 22:52:03,420 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 22:52:03,420 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 22:52:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:03,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1217332562, now seen corresponding path program 3 times [2021-11-06 22:52:03,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:03,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229783480] [2021-11-06 22:52:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:03,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:03,441 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:03,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744398941] [2021-11-06 22:52:03,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 22:52:03,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:03,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:03,442 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 22:52:03,443 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 22:52:04,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 22:52:04,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:52:04,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:52:04,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:05,586 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 22:52:05,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:05,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229783480] [2021-11-06 22:52:05,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:05,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744398941] [2021-11-06 22:52:05,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744398941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:52:05,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:52:05,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:52:05,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410374809] [2021-11-06 22:52:05,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:52:05,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:05,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:52:05,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:52:05,590 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 22:52:05,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:05,632 INFO L93 Difference]: Finished difference Result 1490 states and 1822 transitions. [2021-11-06 22:52:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:52:05,633 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 22:52:05,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:05,635 INFO L225 Difference]: With dead ends: 1490 [2021-11-06 22:52:05,635 INFO L226 Difference]: Without dead ends: 772 [2021-11-06 22:52:05,636 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 22:52:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-06 22:52:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2021-11-06 22:52:05,647 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 22:52:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 941 transitions. [2021-11-06 22:52:05,649 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 941 transitions. Word has length 407 [2021-11-06 22:52:05,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:05,649 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 941 transitions. [2021-11-06 22:52:05,649 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 22:52:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 941 transitions. [2021-11-06 22:52:05,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-11-06 22:52:05,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:05,653 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 22:52:05,687 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 22:52:05,872 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 22:52:05,873 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 22:52:05,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2077967202, now seen corresponding path program 1 times [2021-11-06 22:52:05,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:05,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857296000] [2021-11-06 22:52:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:05,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:05,896 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:05,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663933995] [2021-11-06 22:52:05,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:05,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:05,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:05,898 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 22:52:05,924 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 22:52:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:52:06,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 22:52:06,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:07,678 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 22:52:07,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:07,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857296000] [2021-11-06 22:52:07,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:07,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663933995] [2021-11-06 22:52:07,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663933995] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:52:07,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:52:07,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-06 22:52:07,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964861821] [2021-11-06 22:52:07,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 22:52:07,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:07,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 22:52:07,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 22:52:07,680 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 22:52:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:07,719 INFO L93 Difference]: Finished difference Result 1180 states and 1440 transitions. [2021-11-06 22:52:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 22:52:07,719 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 22:52:07,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:07,722 INFO L225 Difference]: With dead ends: 1180 [2021-11-06 22:52:07,722 INFO L226 Difference]: Without dead ends: 1135 [2021-11-06 22:52:07,723 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 22:52:07,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-06 22:52:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 954. [2021-11-06 22:52:07,734 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 22:52:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1163 transitions. [2021-11-06 22:52:07,736 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1163 transitions. Word has length 414 [2021-11-06 22:52:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:07,736 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1163 transitions. [2021-11-06 22:52:07,736 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 22:52:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1163 transitions. [2021-11-06 22:52:07,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2021-11-06 22:52:07,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:07,742 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 22:52:07,780 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 22:52:07,959 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 22:52:07,959 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 22:52:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1990200007, now seen corresponding path program 2 times [2021-11-06 22:52:07,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:07,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034545574] [2021-11-06 22:52:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:07,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:07,978 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:07,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621495260] [2021-11-06 22:52:07,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:52:07,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:07,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:07,979 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 22:52:07,980 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 22:52:09,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 22:52:09,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:52:09,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 22:52:09,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:52:10,179 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 22:52:10,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:52:10,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034545574] [2021-11-06 22:52:10,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:52:10,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621495260] [2021-11-06 22:52:10,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621495260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:52:10,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:52:10,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-06 22:52:10,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354121550] [2021-11-06 22:52:10,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 22:52:10,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:52:10,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 22:52:10,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 22:52:10,181 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 22:52:10,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:52:10,243 INFO L93 Difference]: Finished difference Result 1362 states and 1662 transitions. [2021-11-06 22:52:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 22:52:10,244 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 22:52:10,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:52:10,248 INFO L225 Difference]: With dead ends: 1362 [2021-11-06 22:52:10,248 INFO L226 Difference]: Without dead ends: 1317 [2021-11-06 22:52:10,248 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 22:52:10,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2021-11-06 22:52:10,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1136. [2021-11-06 22:52:10,265 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 22:52:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1385 transitions. [2021-11-06 22:52:10,267 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1385 transitions. Word has length 512 [2021-11-06 22:52:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:52:10,268 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1385 transitions. [2021-11-06 22:52:10,268 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 22:52:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1385 transitions. [2021-11-06 22:52:10,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-06 22:52:10,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:52:10,271 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 22:52:10,295 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 22:52:10,495 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 22:52:10,495 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 22:52:10,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:52:10,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1529530032, now seen corresponding path program 3 times [2021-11-06 22:52:10,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:52:10,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192125147] [2021-11-06 22:52:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:52:10,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:52:10,549 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:52:10,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809935685] [2021-11-06 22:52:10,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 22:52:10,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:52:10,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:52:10,553 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 22:52:10,554 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