./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 05:16:28,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:16:28,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:16:28,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:16:28,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:16:28,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:16:28,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:16:28,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:16:28,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:16:28,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:16:28,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:16:28,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:16:28,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:16:28,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:16:28,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:16:28,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:16:28,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:16:28,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:16:28,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:16:28,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:16:28,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:16:28,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:16:28,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:16:28,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:16:28,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:16:28,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:16:28,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:16:28,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:16:28,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:16:28,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:16:28,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:16:28,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:16:28,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:16:28,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:16:28,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:16:28,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:16:28,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:16:28,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:16:28,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:16:28,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:16:28,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:16:28,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-03 05:16:28,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:16:28,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:16:28,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 05:16:28,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 05:16:28,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:16:28,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:16:28,778 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 05:16:28,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:16:28,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:16:28,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:16:28,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:16:28,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:16:28,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:16:28,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:16:28,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:16:28,780 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:16:28,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:16:28,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:16:28,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:16:28,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:16:28,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:16:28,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:16:28,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:28,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:16:28,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:16:28,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:16:28,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 05:16:28,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:16:28,783 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 05:16:28,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 05:16:28,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:16:28,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:16:28,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 [2021-11-03 05:16:29,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:16:29,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:16:29,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:16:29,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:16:29,060 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:16:29,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-03 05:16:29,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b81595d6/2f9e71299b344b3e9dc04f90f7b21a5d/FLAGf8a6c1632 [2021-11-03 05:16:29,698 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:16:29,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-03 05:16:29,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b81595d6/2f9e71299b344b3e9dc04f90f7b21a5d/FLAGf8a6c1632 [2021-11-03 05:16:30,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b81595d6/2f9e71299b344b3e9dc04f90f7b21a5d [2021-11-03 05:16:30,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:16:30,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:16:30,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:30,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:16:30,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:16:30,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc3b6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30, skipping insertion in model container [2021-11-03 05:16:30,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:16:30,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:30,523 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-03 05:16:30,639 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-03 05:16:30,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:30,653 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:16:30,683 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-03 05:16:30,742 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-03 05:16:30,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:30,775 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:16:30,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30 WrapperNode [2021-11-03 05:16:30,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:30,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:30,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:16:30,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:16:30,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:30,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:16:30,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:16:30,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:16:30,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:16:30,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:16:30,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:16:30,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:16:30,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30" (1/1) ... [2021-11-03 05:16:30,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:30,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:31,005 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) [2021-11-03 05:16:31,044 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 [2021-11-03 05:16:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 05:16:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 05:16:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:16:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:16:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:16:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:16:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:16:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:16:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:16:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:16:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:16:31,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:16:31,768 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-03 05:16:31,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:16:31 BoogieIcfgContainer [2021-11-03 05:16:31,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:16:31,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:16:31,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:16:31,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:16:31,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:16:30" (1/3) ... [2021-11-03 05:16:31,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af50895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:16:31, skipping insertion in model container [2021-11-03 05:16:31,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:30" (2/3) ... [2021-11-03 05:16:31,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af50895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:16:31, skipping insertion in model container [2021-11-03 05:16:31,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:16:31" (3/3) ... [2021-11-03 05:16:31,783 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test3-1.i [2021-11-03 05:16:31,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:16:31,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 05:16:31,842 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:16:31,851 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 [2021-11-03 05:16:31,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 05:16:31,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 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) [2021-11-03 05:16:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 05:16:31,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:31,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:31,886 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:31,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash 239232295, now seen corresponding path program 1 times [2021-11-03 05:16:31,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:31,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854045482] [2021-11-03 05:16:31,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:31,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:32,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:32,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854045482] [2021-11-03 05:16:32,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854045482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:32,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:32,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:16:32,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387341691] [2021-11-03 05:16:32,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:16:32,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:32,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:16:32,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:16:32,109 INFO L87 Difference]: Start difference. First operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-03 05:16:32,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:32,646 INFO L93 Difference]: Finished difference Result 402 states and 670 transitions. [2021-11-03 05:16:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:16:32,649 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-03 05:16:32,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:32,659 INFO L225 Difference]: With dead ends: 402 [2021-11-03 05:16:32,659 INFO L226 Difference]: Without dead ends: 198 [2021-11-03 05:16:32,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:16:32,668 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 386.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 481.37ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:32,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 263 Unknown, 0 Unchecked, 2.30ms Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 481.37ms Time] [2021-11-03 05:16:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-03 05:16:32,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-03 05:16:32,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.3489583333333333) internal successors, (259), 197 states have internal predecessors, (259), 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) [2021-11-03 05:16:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2021-11-03 05:16:32,716 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 9 [2021-11-03 05:16:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:32,716 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2021-11-03 05:16:32,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-03 05:16:32,717 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2021-11-03 05:16:32,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 05:16:32,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:32,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:32,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:16:32,721 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:32,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:32,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1042319138, now seen corresponding path program 1 times [2021-11-03 05:16:32,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:32,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621458671] [2021-11-03 05:16:32,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:32,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:32,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:32,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621458671] [2021-11-03 05:16:32,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621458671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:32,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:32,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:16:32,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442336312] [2021-11-03 05:16:32,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:32,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:32,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:32,797 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-03 05:16:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:33,677 INFO L93 Difference]: Finished difference Result 445 states and 582 transitions. [2021-11-03 05:16:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:16:33,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-11-03 05:16:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:33,681 INFO L225 Difference]: With dead ends: 445 [2021-11-03 05:16:33,681 INFO L226 Difference]: Without dead ends: 337 [2021-11-03 05:16:33,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:33,683 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 173 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 644.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.25ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 829.23ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:33,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 0 Invalid, 803 Unknown, 0 Unchecked, 7.25ms Time], IncrementalHoareTripleChecker [3 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 829.23ms Time] [2021-11-03 05:16:33,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-03 05:16:33,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 200. [2021-11-03 05:16:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.3453608247422681) internal successors, (261), 199 states have internal predecessors, (261), 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) [2021-11-03 05:16:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 261 transitions. [2021-11-03 05:16:33,698 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 261 transitions. Word has length 12 [2021-11-03 05:16:33,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:33,698 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 261 transitions. [2021-11-03 05:16:33,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-03 05:16:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 261 transitions. [2021-11-03 05:16:33,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 05:16:33,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:33,700 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:33,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:16:33,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:33,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:33,702 INFO L85 PathProgramCache]: Analyzing trace with hash 168111628, now seen corresponding path program 1 times [2021-11-03 05:16:33,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:33,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025278077] [2021-11-03 05:16:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:33,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:33,721 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:33,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432722378] [2021-11-03 05:16:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:33,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:33,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:33,724 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) [2021-11-03 05:16:33,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 05:16:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:33,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:33,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:34,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:16:34,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:34,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025278077] [2021-11-03 05:16:34,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:34,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432722378] [2021-11-03 05:16:34,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432722378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:34,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:34,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:16:34,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182196902] [2021-11-03 05:16:34,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:16:34,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:34,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:16:34,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:16:34,076 INFO L87 Difference]: Start difference. First operand 200 states and 261 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-03 05:16:34,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:34,590 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2021-11-03 05:16:34,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:16:34,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-03 05:16:34,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:34,592 INFO L225 Difference]: With dead ends: 417 [2021-11-03 05:16:34,592 INFO L226 Difference]: Without dead ends: 221 [2021-11-03 05:16:34,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:16:34,594 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 418.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 497.33ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:34,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 535 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [28 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 497.33ms Time] [2021-11-03 05:16:34,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-03 05:16:34,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2021-11-03 05:16:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 214 states have (on average 1.3130841121495327) internal successors, (281), 219 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 281 transitions. [2021-11-03 05:16:34,604 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 281 transitions. Word has length 64 [2021-11-03 05:16:34,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:34,605 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 281 transitions. [2021-11-03 05:16:34,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-03 05:16:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 281 transitions. [2021-11-03 05:16:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 05:16:34,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:34,607 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:34,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:34,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:34,824 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:34,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash 521200010, now seen corresponding path program 1 times [2021-11-03 05:16:34,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:34,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674466157] [2021-11-03 05:16:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:34,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:34,844 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:34,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748125292] [2021-11-03 05:16:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:34,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:34,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:34,851 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) [2021-11-03 05:16:34,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 05:16:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:34,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:35,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:35,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:16:35,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:35,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674466157] [2021-11-03 05:16:35,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:35,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748125292] [2021-11-03 05:16:35,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748125292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:35,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:35,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:16:35,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423449748] [2021-11-03 05:16:35,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:35,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:35,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:35,136 INFO L87 Difference]: Start difference. First operand 220 states and 281 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-03 05:16:35,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:35,641 INFO L93 Difference]: Finished difference Result 428 states and 550 transitions. [2021-11-03 05:16:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:16:35,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2021-11-03 05:16:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:35,643 INFO L225 Difference]: With dead ends: 428 [2021-11-03 05:16:35,643 INFO L226 Difference]: Without dead ends: 212 [2021-11-03 05:16:35,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.46ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:35,645 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 247 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 392.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.84ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 474.57ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:35,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 0 Invalid, 540 Unknown, 0 Unchecked, 2.84ms Time], IncrementalHoareTripleChecker [24 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 474.57ms Time] [2021-11-03 05:16:35,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-03 05:16:35,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2021-11-03 05:16:35,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 200 states have (on average 1.3) internal successors, (260), 205 states have internal predecessors, (260), 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) [2021-11-03 05:16:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 260 transitions. [2021-11-03 05:16:35,654 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 260 transitions. Word has length 64 [2021-11-03 05:16:35,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:35,654 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 260 transitions. [2021-11-03 05:16:35,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-03 05:16:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 260 transitions. [2021-11-03 05:16:35,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 05:16:35,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:35,657 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:35,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-03 05:16:35,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-03 05:16:35,872 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:35,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:35,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1012352744, now seen corresponding path program 1 times [2021-11-03 05:16:35,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:35,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674150370] [2021-11-03 05:16:35,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:35,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:35,895 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:35,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291080029] [2021-11-03 05:16:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:35,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:35,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:35,898 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) [2021-11-03 05:16:35,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 05:16:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:36,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:16:36,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:36,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:36,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:16:36,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:36,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674150370] [2021-11-03 05:16:36,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:36,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291080029] [2021-11-03 05:16:36,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291080029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:36,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:36,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:16:36,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564016996] [2021-11-03 05:16:36,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:16:36,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:16:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:16:36,311 INFO L87 Difference]: Start difference. First operand 206 states and 260 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-03 05:16:36,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:36,850 INFO L93 Difference]: Finished difference Result 542 states and 683 transitions. [2021-11-03 05:16:36,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:16:36,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-03 05:16:36,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:36,852 INFO L225 Difference]: With dead ends: 542 [2021-11-03 05:16:36,852 INFO L226 Difference]: Without dead ends: 340 [2021-11-03 05:16:36,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:16:36,853 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 132 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 426.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 518.51ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:36,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 0 Invalid, 576 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [5 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 518.51ms Time] [2021-11-03 05:16:36,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-03 05:16:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 312. [2021-11-03 05:16:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 306 states have (on average 1.2843137254901962) internal successors, (393), 311 states have internal predecessors, (393), 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) [2021-11-03 05:16:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 393 transitions. [2021-11-03 05:16:36,861 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 393 transitions. Word has length 64 [2021-11-03 05:16:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:36,861 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 393 transitions. [2021-11-03 05:16:36,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-03 05:16:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 393 transitions. [2021-11-03 05:16:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 05:16:36,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:36,863 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:36,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:37,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:37,065 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:37,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash -147792665, now seen corresponding path program 1 times [2021-11-03 05:16:37,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:37,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684872401] [2021-11-03 05:16:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:37,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:37,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:37,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681996833] [2021-11-03 05:16:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:37,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:37,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:37,082 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) [2021-11-03 05:16:37,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 05:16:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:37,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:37,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:16:37,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:16:37,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:37,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684872401] [2021-11-03 05:16:37,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:37,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681996833] [2021-11-03 05:16:37,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681996833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:37,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:37,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:16:37,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442197575] [2021-11-03 05:16:37,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:16:37,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:37,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:16:37,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:16:37,361 INFO L87 Difference]: Start difference. First operand 312 states and 393 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-11-03 05:16:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:37,794 INFO L93 Difference]: Finished difference Result 578 states and 737 transitions. [2021-11-03 05:16:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:16:37,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-03 05:16:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:37,796 INFO L225 Difference]: With dead ends: 578 [2021-11-03 05:16:37,796 INFO L226 Difference]: Without dead ends: 314 [2021-11-03 05:16:37,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:16:37,798 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 348.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 415.76ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:37,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 504 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [2 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 415.76ms Time] [2021-11-03 05:16:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-03 05:16:37,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-11-03 05:16:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 308 states have (on average 1.2824675324675325) internal successors, (395), 313 states have internal predecessors, (395), 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) [2021-11-03 05:16:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 395 transitions. [2021-11-03 05:16:37,807 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 395 transitions. Word has length 71 [2021-11-03 05:16:37,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:37,807 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 395 transitions. [2021-11-03 05:16:37,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-11-03 05:16:37,808 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 395 transitions. [2021-11-03 05:16:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 05:16:37,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:37,809 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:37,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:38,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:38,020 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:38,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:38,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1386404344, now seen corresponding path program 1 times [2021-11-03 05:16:38,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:38,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345210011] [2021-11-03 05:16:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:38,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:38,038 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:38,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989833203] [2021-11-03 05:16:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:38,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:38,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:38,040 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) [2021-11-03 05:16:38,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 05:16:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:38,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:16:38,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:16:38,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:16:38,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:38,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345210011] [2021-11-03 05:16:38,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:38,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989833203] [2021-11-03 05:16:38,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989833203] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:16:38,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:16:38,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-03 05:16:38,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217845048] [2021-11-03 05:16:38,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:16:38,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:16:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:16:38,414 INFO L87 Difference]: Start difference. First operand 314 states and 395 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-03 05:16:39,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:39,071 INFO L93 Difference]: Finished difference Result 586 states and 749 transitions. [2021-11-03 05:16:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:16:39,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 73 [2021-11-03 05:16:39,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:39,073 INFO L225 Difference]: With dead ends: 586 [2021-11-03 05:16:39,073 INFO L226 Difference]: Without dead ends: 320 [2021-11-03 05:16:39,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.76ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:16:39,075 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 538.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 631.67ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:39,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 769 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [13 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 631.67ms Time] [2021-11-03 05:16:39,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-03 05:16:39,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2021-11-03 05:16:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 314 states have (on average 1.2770700636942676) internal successors, (401), 319 states have internal predecessors, (401), 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) [2021-11-03 05:16:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 401 transitions. [2021-11-03 05:16:39,084 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 401 transitions. Word has length 73 [2021-11-03 05:16:39,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:39,084 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 401 transitions. [2021-11-03 05:16:39,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-03 05:16:39,085 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 401 transitions. [2021-11-03 05:16:39,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 05:16:39,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:39,086 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:39,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:39,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:39,300 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:39,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:39,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1628542297, now seen corresponding path program 2 times [2021-11-03 05:16:39,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:39,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857253504] [2021-11-03 05:16:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:39,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:39,325 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:39,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400060182] [2021-11-03 05:16:39,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:16:39,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:39,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:39,328 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) [2021-11-03 05:16:39,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 05:16:39,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 05:16:39,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:16:39,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:39,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:39,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 05:16:39,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-03 05:16:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-03 05:16:39,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:16:39,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:39,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857253504] [2021-11-03 05:16:39,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:39,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400060182] [2021-11-03 05:16:39,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400060182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:39,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:39,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:16:39,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452805461] [2021-11-03 05:16:39,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:39,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:39,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:39,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:39,609 INFO L87 Difference]: Start difference. First operand 320 states and 401 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2021-11-03 05:16:40,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:40,294 INFO L93 Difference]: Finished difference Result 429 states and 545 transitions. [2021-11-03 05:16:40,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:16:40,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 79 [2021-11-03 05:16:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:40,296 INFO L225 Difference]: With dead ends: 429 [2021-11-03 05:16:40,297 INFO L226 Difference]: Without dead ends: 404 [2021-11-03 05:16:40,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:40,297 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 549.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 656.17ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:40,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 782 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [3 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 656.17ms Time] [2021-11-03 05:16:40,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-11-03 05:16:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 322. [2021-11-03 05:16:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 316 states have (on average 1.2753164556962024) internal successors, (403), 321 states have internal predecessors, (403), 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) [2021-11-03 05:16:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 403 transitions. [2021-11-03 05:16:40,306 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 403 transitions. Word has length 79 [2021-11-03 05:16:40,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:40,306 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 403 transitions. [2021-11-03 05:16:40,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2021-11-03 05:16:40,307 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 403 transitions. [2021-11-03 05:16:40,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:16:40,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:40,308 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:40,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:40,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:40,535 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:40,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:40,536 INFO L85 PathProgramCache]: Analyzing trace with hash 819064170, now seen corresponding path program 1 times [2021-11-03 05:16:40,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:40,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304277472] [2021-11-03 05:16:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:40,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:40,561 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:40,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682647914] [2021-11-03 05:16:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:40,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:40,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:40,564 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) [2021-11-03 05:16:40,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 05:16:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:40,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:40,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-03 05:16:40,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:16:40,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:40,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304277472] [2021-11-03 05:16:40,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:40,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682647914] [2021-11-03 05:16:40,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682647914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:40,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:40,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:16:40,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491616269] [2021-11-03 05:16:40,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:16:40,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:40,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:16:40,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:16:40,872 INFO L87 Difference]: Start difference. First operand 322 states and 403 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-03 05:16:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:41,446 INFO L93 Difference]: Finished difference Result 533 states and 689 transitions. [2021-11-03 05:16:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:16:41,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 111 [2021-11-03 05:16:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:41,449 INFO L225 Difference]: With dead ends: 533 [2021-11-03 05:16:41,449 INFO L226 Difference]: Without dead ends: 364 [2021-11-03 05:16:41,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:16:41,450 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 482.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.41ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 556.91ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:41,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 521 Unknown, 0 Unchecked, 1.41ms Time], IncrementalHoareTripleChecker [28 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 556.91ms Time] [2021-11-03 05:16:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-11-03 05:16:41,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 362. [2021-11-03 05:16:41,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 356 states have (on average 1.2443820224719102) internal successors, (443), 361 states have internal predecessors, (443), 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) [2021-11-03 05:16:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 443 transitions. [2021-11-03 05:16:41,460 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 443 transitions. Word has length 111 [2021-11-03 05:16:41,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:41,461 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 443 transitions. [2021-11-03 05:16:41,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-03 05:16:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 443 transitions. [2021-11-03 05:16:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:16:41,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:41,463 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:41,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:41,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:41,680 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:41,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash 498859118, now seen corresponding path program 1 times [2021-11-03 05:16:41,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:41,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911574606] [2021-11-03 05:16:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:41,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:41,702 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:41,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315790859] [2021-11-03 05:16:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:41,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:41,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:41,706 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) [2021-11-03 05:16:41,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 05:16:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:41,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:41,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-03 05:16:42,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:16:42,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:42,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911574606] [2021-11-03 05:16:42,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:42,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315790859] [2021-11-03 05:16:42,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315790859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:42,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:42,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:16:42,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545346728] [2021-11-03 05:16:42,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:42,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:42,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:42,040 INFO L87 Difference]: Start difference. First operand 362 states and 443 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-11-03 05:16:42,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:42,653 INFO L93 Difference]: Finished difference Result 548 states and 684 transitions. [2021-11-03 05:16:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:16:42,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 111 [2021-11-03 05:16:42,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:42,655 INFO L225 Difference]: With dead ends: 548 [2021-11-03 05:16:42,655 INFO L226 Difference]: Without dead ends: 339 [2021-11-03 05:16:42,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:42,656 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 130 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 501.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 589.48ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:42,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 0 Invalid, 630 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [24 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 589.48ms Time] [2021-11-03 05:16:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-03 05:16:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 334. [2021-11-03 05:16:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 328 states have (on average 1.2225609756097562) internal successors, (401), 333 states have internal predecessors, (401), 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) [2021-11-03 05:16:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 401 transitions. [2021-11-03 05:16:42,665 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 401 transitions. Word has length 111 [2021-11-03 05:16:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:42,665 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 401 transitions. [2021-11-03 05:16:42,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-11-03 05:16:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 401 transitions. [2021-11-03 05:16:42,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 05:16:42,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:42,667 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:42,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:42,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-03 05:16:42,883 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:42,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:42,884 INFO L85 PathProgramCache]: Analyzing trace with hash -383989728, now seen corresponding path program 1 times [2021-11-03 05:16:42,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:42,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579933196] [2021-11-03 05:16:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:42,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:42,899 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:42,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573867027] [2021-11-03 05:16:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:42,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:42,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:42,900 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) [2021-11-03 05:16:42,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 05:16:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:43,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:16:43,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 05:16:43,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 05:16:43,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:43,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579933196] [2021-11-03 05:16:43,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:43,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573867027] [2021-11-03 05:16:43,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573867027] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:16:43,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:16:43,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-03 05:16:43,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603754030] [2021-11-03 05:16:43,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:16:43,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:43,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:16:43,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:16:43,515 INFO L87 Difference]: Start difference. First operand 334 states and 401 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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) [2021-11-03 05:16:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:44,202 INFO L93 Difference]: Finished difference Result 632 states and 773 transitions. [2021-11-03 05:16:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:16:44,203 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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 111 [2021-11-03 05:16:44,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:44,204 INFO L225 Difference]: With dead ends: 632 [2021-11-03 05:16:44,204 INFO L226 Difference]: Without dead ends: 346 [2021-11-03 05:16:44,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.68ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:16:44,205 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 563.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.04ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 663.18ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:44,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 787 Unknown, 0 Unchecked, 2.04ms Time], IncrementalHoareTripleChecker [40 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 663.18ms Time] [2021-11-03 05:16:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-03 05:16:44,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2021-11-03 05:16:44,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 340 states have (on average 1.214705882352941) internal successors, (413), 345 states have internal predecessors, (413), 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) [2021-11-03 05:16:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 413 transitions. [2021-11-03 05:16:44,214 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 413 transitions. Word has length 111 [2021-11-03 05:16:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:44,214 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 413 transitions. [2021-11-03 05:16:44,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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) [2021-11-03 05:16:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 413 transitions. [2021-11-03 05:16:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-03 05:16:44,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:44,216 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:44,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:44,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:44,431 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:44,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash 562680000, now seen corresponding path program 2 times [2021-11-03 05:16:44,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:44,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092464580] [2021-11-03 05:16:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:44,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:44,442 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:44,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894338589] [2021-11-03 05:16:44,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:16:44,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:44,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:44,444 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) [2021-11-03 05:16:44,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 05:16:44,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:16:44,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:16:44,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 05:16:44,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 05:16:44,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-03 05:16:45,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:45,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092464580] [2021-11-03 05:16:45,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:45,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894338589] [2021-11-03 05:16:45,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894338589] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:16:45,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:16:45,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-03 05:16:45,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535100665] [2021-11-03 05:16:45,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 05:16:45,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:45,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 05:16:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 05:16:45,307 INFO L87 Difference]: Start difference. First operand 346 states and 413 transitions. Second operand has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 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) [2021-11-03 05:16:46,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:46,150 INFO L93 Difference]: Finished difference Result 668 states and 821 transitions. [2021-11-03 05:16:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 05:16:46,151 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 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 123 [2021-11-03 05:16:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:46,152 INFO L225 Difference]: With dead ends: 668 [2021-11-03 05:16:46,152 INFO L226 Difference]: Without dead ends: 370 [2021-11-03 05:16:46,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 289.26ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-03 05:16:46,153 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 671.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.05ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 807.22ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:46,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1095 Unknown, 0 Unchecked, 3.05ms Time], IncrementalHoareTripleChecker [83 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 807.22ms Time] [2021-11-03 05:16:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-03 05:16:46,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-11-03 05:16:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 364 states have (on average 1.2005494505494505) internal successors, (437), 369 states have internal predecessors, (437), 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) [2021-11-03 05:16:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 437 transitions. [2021-11-03 05:16:46,164 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 437 transitions. Word has length 123 [2021-11-03 05:16:46,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:46,165 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 437 transitions. [2021-11-03 05:16:46,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 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) [2021-11-03 05:16:46,165 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 437 transitions. [2021-11-03 05:16:46,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-03 05:16:46,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:46,167 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:46,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:46,391 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,SelfDestructingSolverStorable11 [2021-11-03 05:16:46,391 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:46,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:46,392 INFO L85 PathProgramCache]: Analyzing trace with hash -27956736, now seen corresponding path program 3 times [2021-11-03 05:16:46,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:46,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270886672] [2021-11-03 05:16:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:46,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:46,412 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:46,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926077956] [2021-11-03 05:16:46,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:16:46,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:46,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:46,417 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) [2021-11-03 05:16:46,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 05:16:46,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 05:16:46,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:16:46,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:16:46,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-03 05:16:46,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 05:16:46,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:46,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270886672] [2021-11-03 05:16:46,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:46,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926077956] [2021-11-03 05:16:46,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926077956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:46,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:46,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:16:46,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129755421] [2021-11-03 05:16:46,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:46,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:46,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:46,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:46,847 INFO L87 Difference]: Start difference. First operand 370 states and 437 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-03 05:16:47,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:47,433 INFO L93 Difference]: Finished difference Result 828 states and 988 transitions. [2021-11-03 05:16:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:16:47,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 147 [2021-11-03 05:16:47,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:47,436 INFO L225 Difference]: With dead ends: 828 [2021-11-03 05:16:47,436 INFO L226 Difference]: Without dead ends: 506 [2021-11-03 05:16:47,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:47,438 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 495 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 447.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.81ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 555.55ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:47,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 0 Invalid, 580 Unknown, 0 Unchecked, 2.81ms Time], IncrementalHoareTripleChecker [5 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 555.55ms Time] [2021-11-03 05:16:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-03 05:16:47,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 454. [2021-11-03 05:16:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 448 states have (on average 1.2075892857142858) internal successors, (541), 453 states have internal predecessors, (541), 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) [2021-11-03 05:16:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 541 transitions. [2021-11-03 05:16:47,452 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 541 transitions. Word has length 147 [2021-11-03 05:16:47,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:47,452 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 541 transitions. [2021-11-03 05:16:47,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-03 05:16:47,453 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 541 transitions. [2021-11-03 05:16:47,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-03 05:16:47,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:47,454 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:47,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:47,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-03 05:16:47,680 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:47,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:47,680 INFO L85 PathProgramCache]: Analyzing trace with hash -535720422, now seen corresponding path program 1 times [2021-11-03 05:16:47,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:47,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803095559] [2021-11-03 05:16:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:47,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:47,692 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:47,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997276013] [2021-11-03 05:16:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:47,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:47,694 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) [2021-11-03 05:16:47,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 05:16:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:47,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 05:16:47,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 05:16:48,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-03 05:16:49,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:49,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803095559] [2021-11-03 05:16:49,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:49,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997276013] [2021-11-03 05:16:49,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997276013] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:16:49,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:16:49,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-03 05:16:49,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115363657] [2021-11-03 05:16:49,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 05:16:49,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:49,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 05:16:49,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 05:16:49,480 INFO L87 Difference]: Start difference. First operand 454 states and 541 transitions. Second operand has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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) [2021-11-03 05:16:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:50,717 INFO L93 Difference]: Finished difference Result 879 states and 1091 transitions. [2021-11-03 05:16:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 05:16:50,717 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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 154 [2021-11-03 05:16:50,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:50,719 INFO L225 Difference]: With dead ends: 879 [2021-11-03 05:16:50,719 INFO L226 Difference]: Without dead ends: 498 [2021-11-03 05:16:50,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 988.15ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 05:16:50,721 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 978.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1174.40ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:50,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1729 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [191 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1174.40ms Time] [2021-11-03 05:16:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-11-03 05:16:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2021-11-03 05:16:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 492 states have (on average 1.1890243902439024) internal successors, (585), 497 states have internal predecessors, (585), 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) [2021-11-03 05:16:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 585 transitions. [2021-11-03 05:16:50,735 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 585 transitions. Word has length 154 [2021-11-03 05:16:50,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:50,735 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 585 transitions. [2021-11-03 05:16:50,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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) [2021-11-03 05:16:50,736 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 585 transitions. [2021-11-03 05:16:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-03 05:16:50,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:50,738 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:50,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:50,951 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,SelfDestructingSolverStorable13 [2021-11-03 05:16:50,951 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:50,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:50,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1925067386, now seen corresponding path program 2 times [2021-11-03 05:16:50,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:50,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832324615] [2021-11-03 05:16:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:50,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:50,963 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:50,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606773227] [2021-11-03 05:16:50,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:16:50,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:50,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:50,965 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) [2021-11-03 05:16:50,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 05:16:51,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:16:51,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:16:51,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-03 05:16:51,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-03 05:16:52,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-03 05:16:56,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 05:16:56,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832324615] [2021-11-03 05:16:56,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:16:56,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606773227] [2021-11-03 05:16:56,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606773227] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:16:56,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:16:56,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 92 [2021-11-03 05:16:56,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799715616] [2021-11-03 05:16:56,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-03 05:16:56,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 05:16:56,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-03 05:16:56,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 05:16:56,154 INFO L87 Difference]: Start difference. First operand 498 states and 585 transitions. Second operand has 92 states, 92 states have (on average 2.1847826086956523) internal successors, (201), 92 states have internal predecessors, (201), 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) [2021-11-03 05:16:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:57,727 INFO L93 Difference]: Finished difference Result 900 states and 1113 transitions. [2021-11-03 05:16:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-03 05:16:57,728 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.1847826086956523) internal successors, (201), 92 states have internal predecessors, (201), 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 198 [2021-11-03 05:16:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:57,729 INFO L225 Difference]: With dead ends: 900 [2021-11-03 05:16:57,730 INFO L226 Difference]: Without dead ends: 544 [2021-11-03 05:16:57,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4192.26ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-03 05:16:57,732 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1195.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.72ms SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1483.98ms IncrementalHoareTripleChecker+Time [2021-11-03 05:16:57,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2035 Unknown, 0 Unchecked, 3.72ms Time], IncrementalHoareTripleChecker [202 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 1483.98ms Time] [2021-11-03 05:16:57,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-03 05:16:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2021-11-03 05:16:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 538 states have (on average 1.1728624535315986) internal successors, (631), 543 states have internal predecessors, (631), 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) [2021-11-03 05:16:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 631 transitions. [2021-11-03 05:16:57,749 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 631 transitions. Word has length 198 [2021-11-03 05:16:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:57,750 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 631 transitions. [2021-11-03 05:16:57,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.1847826086956523) internal successors, (201), 92 states have internal predecessors, (201), 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) [2021-11-03 05:16:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 631 transitions. [2021-11-03 05:16:57,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-03 05:16:57,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 05:16:57,753 INFO L514 BasicCegarLoop]: trace histogram [90, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:57,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:57,967 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,SelfDestructingSolverStorable14 [2021-11-03 05:16:57,968 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:16:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:57,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1358050298, now seen corresponding path program 3 times [2021-11-03 05:16:57,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 05:16:57,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718743719] [2021-11-03 05:16:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:57,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:16:57,987 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 05:16:57,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773001392] [2021-11-03 05:16:57,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:16:57,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:16:57,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 05:16:57,989 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) [2021-11-03 05:16:57,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process Killed by 15