./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 22:35:55,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 22:35:55,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 22:35:55,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 22:35:55,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 22:35:55,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 22:35:55,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 22:35:55,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 22:35:55,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 22:35:55,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 22:35:55,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 22:35:55,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 22:35:55,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 22:35:55,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 22:35:55,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 22:35:55,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 22:35:55,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 22:35:55,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 22:35:55,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 22:35:55,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 22:35:55,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 22:35:55,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 22:35:55,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 22:35:55,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 22:35:55,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 22:35:55,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 22:35:55,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 22:35:55,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 22:35:55,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 22:35:55,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 22:35:55,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 22:35:55,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 22:35:55,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 22:35:55,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 22:35:55,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 22:35:55,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 22:35:55,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 22:35:55,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 22:35:55,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 22:35:55,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 22:35:55,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 22:35:55,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 22:35:55,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 22:35:55,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 22:35:55,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 22:35:55,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 22:35:55,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 22:35:55,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 22:35:55,762 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 22:35:55,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 22:35:55,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 22:35:55,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 22:35:55,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 22:35:55,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 22:35:55,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 22:35:55,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 22:35:55,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 22:35:55,764 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 22:35:55,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 22:35:55,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 22:35:55,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 22:35:55,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 22:35:55,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 22:35:55,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 22:35:55,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:35:55,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 22:35:55,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 22:35:55,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 22:35:55,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 22:35:55,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 22:35:55,767 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 22:35:55,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 22:35:55,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 22:35:55,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 22:35:55,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 [2021-11-06 22:35:55,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 22:35:55,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 22:35:55,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 22:35:55,995 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 22:35:55,995 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 22:35:55,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-06 22:35:56,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bcb5f4b3/363efade269a4bbb8af5f357409a239b/FLAG0d751c9d3 [2021-11-06 22:35:56,458 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 22:35:56,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-06 22:35:56,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bcb5f4b3/363efade269a4bbb8af5f357409a239b/FLAG0d751c9d3 [2021-11-06 22:35:56,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bcb5f4b3/363efade269a4bbb8af5f357409a239b [2021-11-06 22:35:56,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 22:35:56,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 22:35:56,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 22:35:56,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 22:35:56,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 22:35:56,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:35:56" (1/1) ... [2021-11-06 22:35:56,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70318a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:56, skipping insertion in model container [2021-11-06 22:35:56,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:35:56" (1/1) ... [2021-11-06 22:35:56,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 22:35:56,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 22:35:57,116 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_BER_test5-3.i[33021,33034] [2021-11-06 22:35:57,221 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_BER_test5-3.i[49681,49694] [2021-11-06 22:35:57,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:35:57,251 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 22:35:57,268 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_BER_test5-3.i[33021,33034] [2021-11-06 22:35:57,332 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_BER_test5-3.i[49681,49694] [2021-11-06 22:35:57,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:35:57,367 INFO L208 MainTranslator]: Completed translation [2021-11-06 22:35:57,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57 WrapperNode [2021-11-06 22:35:57,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 22:35:57,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 22:35:57,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 22:35:57,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 22:35:57,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57" (1/1) ... [2021-11-06 22:35:57,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57" (1/1) ... [2021-11-06 22:35:57,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 22:35:57,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 22:35:57,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 22:35:57,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 22:35:57,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57" (1/1) ... [2021-11-06 22:35:57,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57" (1/1) ... [2021-11-06 22:35:57,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57" (1/1) ... [2021-11-06 22:35:57,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57" (1/1) ... [2021-11-06 22:35:57,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57" (1/1) ... [2021-11-06 22:35:57,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57" (1/1) ... [2021-11-06 22:35:57,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57" (1/1) ... [2021-11-06 22:35:57,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 22:35:57,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 22:35:57,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 22:35:57,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 22:35:57,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57" (1/1) ... [2021-11-06 22:35:57,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:35:57,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:35:57,594 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 22:35:57,611 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 22:35:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 22:35:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 22:35:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 22:35:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 22:35:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 22:35:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 22:35:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 22:35:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 22:35:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 22:35:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 22:35:57,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 22:35:58,811 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 22:35:58,811 INFO L299 CfgBuilder]: Removed 128 assume(true) statements. [2021-11-06 22:35:58,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:35:58 BoogieIcfgContainer [2021-11-06 22:35:58,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 22:35:58,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 22:35:58,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 22:35:58,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 22:35:58,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:35:56" (1/3) ... [2021-11-06 22:35:58,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b96b228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:35:58, skipping insertion in model container [2021-11-06 22:35:58,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:57" (2/3) ... [2021-11-06 22:35:58,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b96b228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:35:58, skipping insertion in model container [2021-11-06 22:35:58,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:35:58" (3/3) ... [2021-11-06 22:35:58,819 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-3.i [2021-11-06 22:35:58,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 22:35:58,822 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-06 22:35:58,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 22:35:58,871 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 22:35:58,871 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-06 22:35:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 301 states have (on average 1.7242524916943522) internal successors, (519), 307 states have internal predecessors, (519), 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 22:35:58,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 22:35:58,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:35:58,896 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:35:58,897 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:35:58,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:35:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-06 22:35:58,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:35:58,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758744563] [2021-11-06 22:35:58,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:35:58,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:35:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:35:59,015 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 22:35:59,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:35:59,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758744563] [2021-11-06 22:35:59,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758744563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:35:59,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:35:59,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 22:35:59,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581714758] [2021-11-06 22:35:59,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 22:35:59,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:35:59,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 22:35:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 22:35:59,032 INFO L87 Difference]: Start difference. First operand has 308 states, 301 states have (on average 1.7242524916943522) internal successors, (519), 307 states have internal predecessors, (519), 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 22:35:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:35:59,066 INFO L93 Difference]: Finished difference Result 614 states and 1036 transitions. [2021-11-06 22:35:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 22:35:59,067 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 22:35:59,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:35:59,073 INFO L225 Difference]: With dead ends: 614 [2021-11-06 22:35:59,073 INFO L226 Difference]: Without dead ends: 254 [2021-11-06 22:35:59,079 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 22:35:59,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-06 22:35:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-06 22:35:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.342741935483871) internal successors, (333), 253 states have internal predecessors, (333), 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 22:35:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-06 22:35:59,126 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-06 22:35:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:35:59,127 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-06 22:35:59,127 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 22:35:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-06 22:35:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 22:35:59,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:35:59,129 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] [2021-11-06 22:35:59,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 22:35:59,130 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:35:59,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:35:59,132 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-06 22:35:59,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:35:59,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611494185] [2021-11-06 22:35:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:35:59,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:35:59,166 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:35:59,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665786997] [2021-11-06 22:35:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:35:59,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:35:59,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:35:59,169 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 22:35:59,174 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 22:35:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:35:59,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 22:35:59,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:35:59,441 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 22:35:59,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:35:59,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611494185] [2021-11-06 22:35:59,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:35:59,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665786997] [2021-11-06 22:35:59,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665786997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:35:59,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:35:59,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:35:59,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378196521] [2021-11-06 22:35:59,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:35:59,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:35:59,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:35:59,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:35:59,461 INFO L87 Difference]: Start difference. First operand 254 states and 333 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 22:35:59,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:35:59,497 INFO L93 Difference]: Finished difference Result 587 states and 769 transitions. [2021-11-06 22:35:59,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:35:59,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-06 22:35:59,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:35:59,502 INFO L225 Difference]: With dead ends: 587 [2021-11-06 22:35:59,502 INFO L226 Difference]: Without dead ends: 505 [2021-11-06 22:35:59,504 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 22:35:59,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-06 22:35:59,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 255. [2021-11-06 22:35:59,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 249 states have (on average 1.3413654618473896) internal successors, (334), 254 states have internal predecessors, (334), 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 22:35:59,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 334 transitions. [2021-11-06 22:35:59,522 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 334 transitions. Word has length 42 [2021-11-06 22:35:59,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:35:59,523 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 334 transitions. [2021-11-06 22:35:59,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 22:35:59,524 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 334 transitions. [2021-11-06 22:35:59,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 22:35:59,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:35:59,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:59,560 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 22:35:59,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:35:59,748 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:35:59,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:35:59,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1837409632, now seen corresponding path program 1 times [2021-11-06 22:35:59,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:35:59,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295129878] [2021-11-06 22:35:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:35:59,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:35:59,774 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:35:59,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071502566] [2021-11-06 22:35:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:35:59,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:35:59,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:35:59,776 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 22:35:59,777 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 22:35:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:35:59,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:35:59,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:00,200 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 22:36:00,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:00,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295129878] [2021-11-06 22:36:00,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:00,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071502566] [2021-11-06 22:36:00,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071502566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:00,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:00,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:00,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622028001] [2021-11-06 22:36:00,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:36:00,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:00,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:36:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:00,204 INFO L87 Difference]: Start difference. First operand 255 states and 334 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 22:36:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:00,251 INFO L93 Difference]: Finished difference Result 528 states and 696 transitions. [2021-11-06 22:36:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:36:00,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-06 22:36:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:00,253 INFO L225 Difference]: With dead ends: 528 [2021-11-06 22:36:00,253 INFO L226 Difference]: Without dead ends: 276 [2021-11-06 22:36:00,254 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 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 22:36:00,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-06 22:36:00,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2021-11-06 22:36:00,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 269 states have (on average 1.3159851301115242) internal successors, (354), 274 states have internal predecessors, (354), 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 22:36:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 354 transitions. [2021-11-06 22:36:00,259 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 354 transitions. Word has length 140 [2021-11-06 22:36:00,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:00,260 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 354 transitions. [2021-11-06 22:36:00,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 22:36:00,260 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 354 transitions. [2021-11-06 22:36:00,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 22:36:00,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:00,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:00,280 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 22:36:00,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-06 22:36:00,464 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:00,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:00,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1273244828, now seen corresponding path program 1 times [2021-11-06 22:36:00,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:00,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852145401] [2021-11-06 22:36:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:00,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:00,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:00,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734146958] [2021-11-06 22:36:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:00,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:00,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:00,486 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 22:36:00,487 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 22:36:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:00,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:00,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:01,003 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 22:36:01,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:01,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852145401] [2021-11-06 22:36:01,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:01,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734146958] [2021-11-06 22:36:01,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734146958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:01,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:01,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:01,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472454797] [2021-11-06 22:36:01,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:36:01,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:01,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:36:01,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:01,006 INFO L87 Difference]: Start difference. First operand 275 states and 354 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 22:36:01,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:01,054 INFO L93 Difference]: Finished difference Result 568 states and 736 transitions. [2021-11-06 22:36:01,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:36:01,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-06 22:36:01,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:01,056 INFO L225 Difference]: With dead ends: 568 [2021-11-06 22:36:01,056 INFO L226 Difference]: Without dead ends: 296 [2021-11-06 22:36:01,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 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 22:36:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-06 22:36:01,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2021-11-06 22:36:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.2941176470588236) internal successors, (374), 294 states have internal predecessors, (374), 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 22:36:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 374 transitions. [2021-11-06 22:36:01,061 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 374 transitions. Word has length 140 [2021-11-06 22:36:01,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:01,062 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 374 transitions. [2021-11-06 22:36:01,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 22:36:01,062 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 374 transitions. [2021-11-06 22:36:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 22:36:01,063 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:01,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:01,091 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 22:36:01,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:01,280 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:01,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:01,280 INFO L85 PathProgramCache]: Analyzing trace with hash -882913824, now seen corresponding path program 1 times [2021-11-06 22:36:01,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:01,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496517534] [2021-11-06 22:36:01,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:01,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:01,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:01,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784442742] [2021-11-06 22:36:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:01,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:01,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:01,301 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 22:36:01,302 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 22:36:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:01,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:01,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 22:36:01,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:01,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496517534] [2021-11-06 22:36:01,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:01,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784442742] [2021-11-06 22:36:01,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784442742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:01,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:01,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:01,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955786200] [2021-11-06 22:36:01,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:36:01,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:01,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:36:01,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:01,753 INFO L87 Difference]: Start difference. First operand 295 states and 374 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 22:36:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:01,798 INFO L93 Difference]: Finished difference Result 397 states and 510 transitions. [2021-11-06 22:36:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:36:01,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-06 22:36:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:01,799 INFO L225 Difference]: With dead ends: 397 [2021-11-06 22:36:01,800 INFO L226 Difference]: Without dead ends: 316 [2021-11-06 22:36:01,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 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 22:36:01,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-06 22:36:01,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-11-06 22:36:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 309 states have (on average 1.2750809061488673) internal successors, (394), 314 states have internal predecessors, (394), 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 22:36:01,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 394 transitions. [2021-11-06 22:36:01,804 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 394 transitions. Word has length 140 [2021-11-06 22:36:01,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:01,805 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 394 transitions. [2021-11-06 22:36:01,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 22:36:01,805 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 394 transitions. [2021-11-06 22:36:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 22:36:01,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:01,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:01,824 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 22:36:02,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:02,024 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:02,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:02,024 INFO L85 PathProgramCache]: Analyzing trace with hash 115522276, now seen corresponding path program 1 times [2021-11-06 22:36:02,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:02,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421076674] [2021-11-06 22:36:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:02,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:02,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:02,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221268227] [2021-11-06 22:36:02,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:02,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:02,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:02,038 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 22:36:02,039 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 22:36:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:02,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:02,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:02,467 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 22:36:02,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:02,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421076674] [2021-11-06 22:36:02,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:02,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221268227] [2021-11-06 22:36:02,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221268227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:02,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:02,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:02,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959311154] [2021-11-06 22:36:02,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:02,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:02,471 INFO L87 Difference]: Start difference. First operand 315 states and 394 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 22:36:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:02,515 INFO L93 Difference]: Finished difference Result 619 states and 777 transitions. [2021-11-06 22:36:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:02,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2021-11-06 22:36:02,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:02,516 INFO L225 Difference]: With dead ends: 619 [2021-11-06 22:36:02,517 INFO L226 Difference]: Without dead ends: 307 [2021-11-06 22:36:02,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 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 22:36:02,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-06 22:36:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2021-11-06 22:36:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 295 states have (on average 1.264406779661017) internal successors, (373), 300 states have internal predecessors, (373), 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 22:36:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 373 transitions. [2021-11-06 22:36:02,522 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 373 transitions. Word has length 140 [2021-11-06 22:36:02,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:02,522 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 373 transitions. [2021-11-06 22:36:02,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 22:36:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 373 transitions. [2021-11-06 22:36:02,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 22:36:02,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:02,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:02,543 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 22:36:02,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:02,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:02,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash 32737814, now seen corresponding path program 1 times [2021-11-06 22:36:02,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:02,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949609777] [2021-11-06 22:36:02,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:02,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:02,760 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:02,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932821511] [2021-11-06 22:36:02,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:02,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:02,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:02,761 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 22:36:02,765 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 22:36:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:03,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:03,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:03,229 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 22:36:03,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:03,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949609777] [2021-11-06 22:36:03,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:03,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932821511] [2021-11-06 22:36:03,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932821511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:03,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:03,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:03,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493238963] [2021-11-06 22:36:03,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:03,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:03,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:03,232 INFO L87 Difference]: Start difference. First operand 301 states and 373 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 22:36:03,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:03,281 INFO L93 Difference]: Finished difference Result 680 states and 844 transitions. [2021-11-06 22:36:03,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:03,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2021-11-06 22:36:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:03,282 INFO L225 Difference]: With dead ends: 680 [2021-11-06 22:36:03,283 INFO L226 Difference]: Without dead ends: 382 [2021-11-06 22:36:03,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 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 22:36:03,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-06 22:36:03,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 287. [2021-11-06 22:36:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 281 states have (on average 1.2526690391459074) internal successors, (352), 286 states have internal predecessors, (352), 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 22:36:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 352 transitions. [2021-11-06 22:36:03,288 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 352 transitions. Word has length 140 [2021-11-06 22:36:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:03,288 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 352 transitions. [2021-11-06 22:36:03,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 22:36:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 352 transitions. [2021-11-06 22:36:03,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 22:36:03,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:03,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:03,309 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 22:36:03,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:03,508 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash -577227484, now seen corresponding path program 1 times [2021-11-06 22:36:03,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:03,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959108530] [2021-11-06 22:36:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:03,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:03,520 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:03,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795261864] [2021-11-06 22:36:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:03,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:03,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:03,521 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 22:36:03,522 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 22:36:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:03,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:03,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 22:36:04,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:04,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959108530] [2021-11-06 22:36:04,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:04,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795261864] [2021-11-06 22:36:04,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795261864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:04,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:04,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:04,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115561598] [2021-11-06 22:36:04,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:04,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:04,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:04,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:04,029 INFO L87 Difference]: Start difference. First operand 287 states and 352 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 22:36:04,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:04,073 INFO L93 Difference]: Finished difference Result 379 states and 468 transitions. [2021-11-06 22:36:04,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:04,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2021-11-06 22:36:04,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:04,074 INFO L225 Difference]: With dead ends: 379 [2021-11-06 22:36:04,074 INFO L226 Difference]: Without dead ends: 278 [2021-11-06 22:36:04,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 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 22:36:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-06 22:36:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2021-11-06 22:36:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 267 states have (on average 1.2397003745318351) internal successors, (331), 272 states have internal predecessors, (331), 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 22:36:04,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 331 transitions. [2021-11-06 22:36:04,087 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 331 transitions. Word has length 140 [2021-11-06 22:36:04,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:04,088 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 331 transitions. [2021-11-06 22:36:04,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 22:36:04,088 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 331 transitions. [2021-11-06 22:36:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 22:36:04,089 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:04,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:04,112 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 22:36:04,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:04,307 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:04,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1460076330, now seen corresponding path program 1 times [2021-11-06 22:36:04,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:04,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022273157] [2021-11-06 22:36:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:04,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:04,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:04,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835623950] [2021-11-06 22:36:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:04,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:04,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:04,324 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 22:36:04,339 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 22:36:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:04,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:04,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:04,925 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 22:36:04,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:04,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022273157] [2021-11-06 22:36:04,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:04,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835623950] [2021-11-06 22:36:04,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835623950] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:04,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:04,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-06 22:36:04,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872246297] [2021-11-06 22:36:04,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:04,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:04,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:04,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:04,927 INFO L87 Difference]: Start difference. First operand 273 states and 331 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 22:36:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:04,953 INFO L93 Difference]: Finished difference Result 811 states and 984 transitions. [2021-11-06 22:36:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:04,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2021-11-06 22:36:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:04,955 INFO L225 Difference]: With dead ends: 811 [2021-11-06 22:36:04,955 INFO L226 Difference]: Without dead ends: 723 [2021-11-06 22:36:04,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 137 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 22:36:04,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-06 22:36:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 455. [2021-11-06 22:36:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 449 states have (on average 1.2316258351893097) internal successors, (553), 454 states have internal predecessors, (553), 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 22:36:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 553 transitions. [2021-11-06 22:36:04,964 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 553 transitions. Word has length 140 [2021-11-06 22:36:04,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:04,965 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 553 transitions. [2021-11-06 22:36:04,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 22:36:04,965 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 553 transitions. [2021-11-06 22:36:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-06 22:36:04,967 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:04,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:04,988 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 22:36:05,175 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,SelfDestructingSolverStorable8 [2021-11-06 22:36:05,176 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:05,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1379453485, now seen corresponding path program 2 times [2021-11-06 22:36:05,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:05,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441249347] [2021-11-06 22:36:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:05,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:05,190 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:05,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012615386] [2021-11-06 22:36:05,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:36:05,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:05,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:05,191 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 22:36:05,192 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 22:36:05,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 22:36:05,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:36:05,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 22:36:05,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:06,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:06,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441249347] [2021-11-06 22:36:06,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:06,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012615386] [2021-11-06 22:36:06,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012615386] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:06,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:06,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-06 22:36:06,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788686038] [2021-11-06 22:36:06,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 22:36:06,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 22:36:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:06,098 INFO L87 Difference]: Start difference. First operand 455 states and 553 transitions. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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 22:36:06,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:06,153 INFO L93 Difference]: Finished difference Result 1080 states and 1310 transitions. [2021-11-06 22:36:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 22:36:06,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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 238 [2021-11-06 22:36:06,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:06,156 INFO L225 Difference]: With dead ends: 1080 [2021-11-06 22:36:06,156 INFO L226 Difference]: Without dead ends: 992 [2021-11-06 22:36:06,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 234 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 22:36:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-06 22:36:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 637. [2021-11-06 22:36:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 631 states have (on average 1.2282091917591125) internal successors, (775), 636 states have internal predecessors, (775), 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 22:36:06,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 775 transitions. [2021-11-06 22:36:06,168 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 775 transitions. Word has length 238 [2021-11-06 22:36:06,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:06,169 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 775 transitions. [2021-11-06 22:36:06,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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 22:36:06,169 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 775 transitions. [2021-11-06 22:36:06,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-06 22:36:06,171 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:06,172 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:06,195 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 22:36:06,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 22:36:06,388 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:06,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash 449267140, now seen corresponding path program 3 times [2021-11-06 22:36:06,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:06,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268072589] [2021-11-06 22:36:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:06,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:06,413 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:06,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950652171] [2021-11-06 22:36:06,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 22:36:06,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:06,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:06,415 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 22:36:06,444 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 22:36:06,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 22:36:06,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:36:06,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:36:06,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-11-06 22:36:08,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:08,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268072589] [2021-11-06 22:36:08,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:08,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950652171] [2021-11-06 22:36:08,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950652171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:08,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:08,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:08,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928193127] [2021-11-06 22:36:08,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:36:08,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:08,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:36:08,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:08,091 INFO L87 Difference]: Start difference. First operand 637 states and 775 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 22:36:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:08,156 INFO L93 Difference]: Finished difference Result 1198 states and 1457 transitions. [2021-11-06 22:36:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:36:08,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 336 [2021-11-06 22:36:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:08,158 INFO L225 Difference]: With dead ends: 1198 [2021-11-06 22:36:08,158 INFO L226 Difference]: Without dead ends: 706 [2021-11-06 22:36:08,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 334 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 22:36:08,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-11-06 22:36:08,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 694. [2021-11-06 22:36:08,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 688 states have (on average 1.2311046511627908) internal successors, (847), 693 states have internal predecessors, (847), 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 22:36:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 847 transitions. [2021-11-06 22:36:08,170 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 847 transitions. Word has length 336 [2021-11-06 22:36:08,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:08,170 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 847 transitions. [2021-11-06 22:36:08,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 22:36:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 847 transitions. [2021-11-06 22:36:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-11-06 22:36:08,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:08,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:08,201 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 22:36:08,391 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,SelfDestructingSolverStorable10 [2021-11-06 22:36:08,392 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:08,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:08,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1643774844, now seen corresponding path program 1 times [2021-11-06 22:36:08,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:08,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114630580] [2021-11-06 22:36:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:08,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:08,408 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:08,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709549003] [2021-11-06 22:36:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:08,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:08,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:08,410 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 22:36:08,415 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 22:36:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:09,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:36:09,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:09,746 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 22:36:09,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:09,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114630580] [2021-11-06 22:36:09,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:09,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709549003] [2021-11-06 22:36:09,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709549003] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:09,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:09,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-06 22:36:09,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816597249] [2021-11-06 22:36:09,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 22:36:09,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:09,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 22:36:09,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 22:36:09,748 INFO L87 Difference]: Start difference. First operand 694 states and 847 transitions. Second operand has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 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 22:36:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:09,808 INFO L93 Difference]: Finished difference Result 1453 states and 1781 transitions. [2021-11-06 22:36:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 22:36:09,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 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 343 [2021-11-06 22:36:09,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:09,812 INFO L225 Difference]: With dead ends: 1453 [2021-11-06 22:36:09,812 INFO L226 Difference]: Without dead ends: 1306 [2021-11-06 22:36:09,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 338 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 22:36:09,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-11-06 22:36:09,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 876. [2021-11-06 22:36:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.228735632183908) internal successors, (1069), 875 states have internal predecessors, (1069), 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 22:36:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1069 transitions. [2021-11-06 22:36:09,828 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1069 transitions. Word has length 343 [2021-11-06 22:36:09,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:09,828 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1069 transitions. [2021-11-06 22:36:09,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 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 22:36:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1069 transitions. [2021-11-06 22:36:09,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-06 22:36:09,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:09,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:09,854 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 22:36:10,047 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,SelfDestructingSolverStorable11 [2021-11-06 22:36:10,047 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash 461433435, now seen corresponding path program 2 times [2021-11-06 22:36:10,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:10,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393828822] [2021-11-06 22:36:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:10,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:10,065 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:10,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204889634] [2021-11-06 22:36:10,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:36:10,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:10,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:10,066 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 22:36:10,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 22:36:10,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 22:36:10,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:36:10,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 22:36:10,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:11,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:11,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393828822] [2021-11-06 22:36:11,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:11,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204889634] [2021-11-06 22:36:11,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204889634] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:11,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:11,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-06 22:36:11,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348178803] [2021-11-06 22:36:11,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 22:36:11,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:11,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 22:36:11,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 22:36:11,665 INFO L87 Difference]: Start difference. First operand 876 states and 1069 transitions. Second operand has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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 22:36:11,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:11,726 INFO L93 Difference]: Finished difference Result 1781 states and 2182 transitions. [2021-11-06 22:36:11,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 22:36:11,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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 441 [2021-11-06 22:36:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:11,731 INFO L225 Difference]: With dead ends: 1781 [2021-11-06 22:36:11,731 INFO L226 Difference]: Without dead ends: 1634 [2021-11-06 22:36:11,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 435 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 22:36:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-11-06 22:36:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1058. [2021-11-06 22:36:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1052 states have (on average 1.2271863117870723) internal successors, (1291), 1057 states have internal predecessors, (1291), 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 22:36:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1291 transitions. [2021-11-06 22:36:11,749 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1291 transitions. Word has length 441 [2021-11-06 22:36:11,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:11,749 INFO L470 AbstractCegarLoop]: Abstraction has 1058 states and 1291 transitions. [2021-11-06 22:36:11,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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 22:36:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1291 transitions. [2021-11-06 22:36:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2021-11-06 22:36:11,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:11,755 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, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:11,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:11,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 22:36:11,977 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:11,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash 511535730, now seen corresponding path program 3 times [2021-11-06 22:36:11,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:11,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304372563] [2021-11-06 22:36:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:11,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:12,004 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:12,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634518819] [2021-11-06 22:36:12,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 22:36:12,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:12,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:12,006 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:12,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 22:36:12,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 22:36:12,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:36:12,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:36:12,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2021-11-06 22:36:14,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:14,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304372563] [2021-11-06 22:36:14,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:14,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634518819] [2021-11-06 22:36:14,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634518819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:14,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:14,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:14,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97533291] [2021-11-06 22:36:14,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:36:14,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:14,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:36:14,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:14,655 INFO L87 Difference]: Start difference. First operand 1058 states and 1291 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 22:36:14,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:14,686 INFO L93 Difference]: Finished difference Result 2058 states and 2516 transitions. [2021-11-06 22:36:14,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:36:14,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 539 [2021-11-06 22:36:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:14,691 INFO L225 Difference]: With dead ends: 2058 [2021-11-06 22:36:14,691 INFO L226 Difference]: Without dead ends: 1056 [2021-11-06 22:36:14,693 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 537 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 22:36:14,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2021-11-06 22:36:14,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1056. [2021-11-06 22:36:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1050 states have (on average 1.2266666666666666) internal successors, (1288), 1055 states have internal predecessors, (1288), 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 22:36:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1288 transitions. [2021-11-06 22:36:14,709 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1288 transitions. Word has length 539 [2021-11-06 22:36:14,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:14,709 INFO L470 AbstractCegarLoop]: Abstraction has 1056 states and 1288 transitions. [2021-11-06 22:36:14,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 22:36:14,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1288 transitions. [2021-11-06 22:36:14,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2021-11-06 22:36:14,712 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:14,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:14,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:14,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 22:36:14,931 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:14,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1357586562, now seen corresponding path program 1 times [2021-11-06 22:36:14,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:14,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083810146] [2021-11-06 22:36:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:14,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:14,959 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:14,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660857907] [2021-11-06 22:36:14,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:14,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:14,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:14,972 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:14,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 22:36:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:16,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 22:36:16,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:17,098 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 22:36:17,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:17,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083810146] [2021-11-06 22:36:17,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:17,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660857907] [2021-11-06 22:36:17,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660857907] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:17,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:17,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-06 22:36:17,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367737705] [2021-11-06 22:36:17,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 22:36:17,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:17,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 22:36:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 22:36:17,102 INFO L87 Difference]: Start difference. First operand 1056 states and 1288 transitions. Second operand has 8 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 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 22:36:17,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:17,181 INFO L93 Difference]: Finished difference Result 1961 states and 2401 transitions. [2021-11-06 22:36:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 22:36:17,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 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 546 [2021-11-06 22:36:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:17,186 INFO L225 Difference]: With dead ends: 1961 [2021-11-06 22:36:17,187 INFO L226 Difference]: Without dead ends: 1814 [2021-11-06 22:36:17,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 539 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 22:36:17,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2021-11-06 22:36:17,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1238. [2021-11-06 22:36:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1232 states have (on average 1.2256493506493507) internal successors, (1510), 1237 states have internal predecessors, (1510), 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 22:36:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1510 transitions. [2021-11-06 22:36:17,210 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1510 transitions. Word has length 546 [2021-11-06 22:36:17,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:17,210 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1510 transitions. [2021-11-06 22:36:17,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 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 22:36:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1510 transitions. [2021-11-06 22:36:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2021-11-06 22:36:17,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:17,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:17,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:17,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:17,428 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:17,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:17,428 INFO L85 PathProgramCache]: Analyzing trace with hash 529047257, now seen corresponding path program 2 times [2021-11-06 22:36:17,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:17,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970881065] [2021-11-06 22:36:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:17,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:17,451 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:17,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040018052] [2021-11-06 22:36:17,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:36:17,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:17,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:17,452 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:17,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-06 22:36:18,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 22:36:18,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:36:18,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 22:36:18,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 0 proven. 1456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:19,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:19,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970881065] [2021-11-06 22:36:19,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:19,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040018052] [2021-11-06 22:36:19,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040018052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:19,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:19,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-06 22:36:19,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959527291] [2021-11-06 22:36:19,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 22:36:19,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:19,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 22:36:19,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-06 22:36:19,987 INFO L87 Difference]: Start difference. First operand 1238 states and 1510 transitions. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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 22:36:20,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:20,071 INFO L93 Difference]: Finished difference Result 2289 states and 2802 transitions. [2021-11-06 22:36:20,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 22:36:20,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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 644 [2021-11-06 22:36:20,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:20,077 INFO L225 Difference]: With dead ends: 2289 [2021-11-06 22:36:20,077 INFO L226 Difference]: Without dead ends: 2142 [2021-11-06 22:36:20,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-06 22:36:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2021-11-06 22:36:20,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1420. [2021-11-06 22:36:20,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1414 states have (on average 1.224893917963225) internal successors, (1732), 1419 states have internal predecessors, (1732), 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 22:36:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1732 transitions. [2021-11-06 22:36:20,111 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1732 transitions. Word has length 644 [2021-11-06 22:36:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:20,111 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 1732 transitions. [2021-11-06 22:36:20,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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 22:36:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1732 transitions. [2021-11-06 22:36:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2021-11-06 22:36:20,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:20,117 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:20,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:20,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-06 22:36:20,336 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:20,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:20,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1214279824, now seen corresponding path program 3 times [2021-11-06 22:36:20,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:20,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612452922] [2021-11-06 22:36:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:20,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:20,368 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:20,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783388100] [2021-11-06 22:36:20,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 22:36:20,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:20,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:20,370 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:20,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-06 22:36:21,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 22:36:21,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:36:21,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:36:21,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2021-11-06 22:36:22,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:22,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612452922] [2021-11-06 22:36:22,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:22,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783388100] [2021-11-06 22:36:22,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783388100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:22,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:22,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:22,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366270016] [2021-11-06 22:36:22,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:36:22,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:22,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:36:22,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:22,950 INFO L87 Difference]: Start difference. First operand 1420 states and 1732 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 22:36:23,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:23,033 INFO L93 Difference]: Finished difference Result 3291 states and 4014 transitions. [2021-11-06 22:36:23,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:36:23,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 742 [2021-11-06 22:36:23,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:23,040 INFO L225 Difference]: With dead ends: 3291 [2021-11-06 22:36:23,040 INFO L226 Difference]: Without dead ends: 2369 [2021-11-06 22:36:23,042 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 740 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 22:36:23,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2021-11-06 22:36:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2357. [2021-11-06 22:36:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 2351 states have (on average 1.2216078264568269) internal successors, (2872), 2356 states have internal predecessors, (2872), 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 22:36:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 2872 transitions. [2021-11-06 22:36:23,081 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 2872 transitions. Word has length 742 [2021-11-06 22:36:23,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:23,082 INFO L470 AbstractCegarLoop]: Abstraction has 2357 states and 2872 transitions. [2021-11-06 22:36:23,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 22:36:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 2872 transitions. [2021-11-06 22:36:23,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2021-11-06 22:36:23,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:23,090 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:23,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:23,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-06 22:36:23,304 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:23,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1205050408, now seen corresponding path program 1 times [2021-11-06 22:36:23,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:23,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441004658] [2021-11-06 22:36:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:23,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:23,370 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:23,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485741076] [2021-11-06 22:36:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:23,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:23,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:23,371 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:23,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-06 22:36:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:25,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 22:36:25,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:26,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 0 proven. 2041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:26,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:26,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441004658] [2021-11-06 22:36:26,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:26,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485741076] [2021-11-06 22:36:26,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485741076] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:26,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:26,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-06 22:36:26,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509081544] [2021-11-06 22:36:26,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 22:36:26,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 22:36:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-06 22:36:26,505 INFO L87 Difference]: Start difference. First operand 2357 states and 2872 transitions. Second operand has 10 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 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 22:36:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:26,633 INFO L93 Difference]: Finished difference Result 3793 states and 4625 transitions. [2021-11-06 22:36:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 22:36:26,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 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 749 [2021-11-06 22:36:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:26,643 INFO L225 Difference]: With dead ends: 3793 [2021-11-06 22:36:26,643 INFO L226 Difference]: Without dead ends: 3602 [2021-11-06 22:36:26,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-06 22:36:26,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-11-06 22:36:26,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 2710. [2021-11-06 22:36:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2704 states have (on average 1.2211538461538463) internal successors, (3302), 2709 states have internal predecessors, (3302), 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 22:36:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3302 transitions. [2021-11-06 22:36:26,715 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3302 transitions. Word has length 749 [2021-11-06 22:36:26,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:26,716 INFO L470 AbstractCegarLoop]: Abstraction has 2710 states and 3302 transitions. [2021-11-06 22:36:26,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 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 22:36:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3302 transitions. [2021-11-06 22:36:26,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2021-11-06 22:36:26,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:26,724 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:26,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:26,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 22:36:26,944 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash -582549215, now seen corresponding path program 2 times [2021-11-06 22:36:26,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:26,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202439276] [2021-11-06 22:36:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:26,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:26,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:26,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122567591] [2021-11-06 22:36:26,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:36:26,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:26,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:26,978 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:26,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-06 22:36:28,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 22:36:28,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:36:28,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2256 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 22:36:28,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 0 proven. 2724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:30,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:30,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202439276] [2021-11-06 22:36:30,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:30,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122567591] [2021-11-06 22:36:30,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122567591] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:30,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:30,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-06 22:36:30,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601380215] [2021-11-06 22:36:30,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 22:36:30,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:30,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 22:36:30,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-06 22:36:30,424 INFO L87 Difference]: Start difference. First operand 2710 states and 3302 transitions. Second operand has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 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 22:36:30,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:30,585 INFO L93 Difference]: Finished difference Result 4292 states and 5233 transitions. [2021-11-06 22:36:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 22:36:30,586 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 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 847 [2021-11-06 22:36:30,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:30,596 INFO L225 Difference]: With dead ends: 4292 [2021-11-06 22:36:30,611 INFO L226 Difference]: Without dead ends: 4101 [2021-11-06 22:36:30,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 837 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-06 22:36:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2021-11-06 22:36:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 3063. [2021-11-06 22:36:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 3057 states have (on average 1.2208047105004907) internal successors, (3732), 3062 states have internal predecessors, (3732), 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 22:36:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 3732 transitions. [2021-11-06 22:36:30,755 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 3732 transitions. Word has length 847 [2021-11-06 22:36:30,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:30,756 INFO L470 AbstractCegarLoop]: Abstraction has 3063 states and 3732 transitions. [2021-11-06 22:36:30,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 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 22:36:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 3732 transitions. [2021-11-06 22:36:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2021-11-06 22:36:30,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:30,768 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:30,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:30,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:30,984 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 22:36:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:30,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1663845418, now seen corresponding path program 3 times [2021-11-06 22:36:30,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:30,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572723260] [2021-11-06 22:36:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:30,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:31,028 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:31,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334644486] [2021-11-06 22:36:31,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 22:36:31,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:31,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:31,030 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 22:36:31,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process Killed by 15