./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94599b38b669e42115f92cee257d9ed4ed5d4777dca7d2ee690bacb4e0d226f0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-07 00:34:01,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:34:01,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:34:01,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:34:01,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:34:01,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:34:01,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:34:01,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:34:01,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:34:01,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:34:01,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:34:01,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:34:01,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:34:01,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:34:01,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:34:01,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:34:01,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:34:01,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:34:01,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:34:01,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:34:01,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:34:01,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:34:01,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:34:01,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:34:01,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:34:01,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:34:01,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:34:01,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:34:01,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:34:01,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:34:01,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:34:01,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:34:01,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:34:01,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:34:01,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:34:01,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:34:01,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:34:01,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:34:01,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:34:01,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:34:01,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:34:01,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 00:34:01,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:34:01,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:34:01,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 00:34:01,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 00:34:01,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 00:34:01,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 00:34:01,709 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 00:34:01,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:34:01,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:34:01,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:34:01,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:34:01,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:34:01,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:34:01,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:34:01,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:34:01,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:34:01,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:34:01,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:34:01,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:34:01,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:34:01,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:34:01,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:34:01,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:34:01,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:34:01,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:34:01,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:34:01,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 00:34:01,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:34:01,715 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 00:34:01,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 00:34:01,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:34:01,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:34:01,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94599b38b669e42115f92cee257d9ed4ed5d4777dca7d2ee690bacb4e0d226f0 [2021-11-07 00:34:01,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:34:01,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:34:01,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:34:01,970 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:34:01,971 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:34:01,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i [2021-11-07 00:34:02,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a633f92f0/54e488ae95344ef9b57f69983f8afb1b/FLAG11c88ef37 [2021-11-07 00:34:02,594 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:34:02,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-3.i [2021-11-07 00:34:02,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a633f92f0/54e488ae95344ef9b57f69983f8afb1b/FLAG11c88ef37 [2021-11-07 00:34:03,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a633f92f0/54e488ae95344ef9b57f69983f8afb1b [2021-11-07 00:34:03,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:34:03,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:34:03,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:34:03,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:34:03,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:34:03,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:03,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417fbe06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03, skipping insertion in model container [2021-11-07 00:34:03,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:03,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:34:03,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:34:03,411 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_SFH_test5-3.i[33021,33034] [2021-11-07 00:34:03,556 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_SFH_test5-3.i[49681,49694] [2021-11-07 00:34:03,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:34:03,608 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:34:03,642 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_SFH_test5-3.i[33021,33034] [2021-11-07 00:34:03,721 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_SFH_test5-3.i[49681,49694] [2021-11-07 00:34:03,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:34:03,757 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:34:03,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03 WrapperNode [2021-11-07 00:34:03,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:34:03,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:34:03,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:34:03,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:34:03,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:03,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:03,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:34:03,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:34:03,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:34:03,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:34:03,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:03,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:03,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:03,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:03,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:04,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:04,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:04,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:34:04,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:34:04,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:34:04,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:34:04,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03" (1/1) ... [2021-11-07 00:34:04,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:34:04,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:04,059 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) [2021-11-07 00:34:04,073 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 [2021-11-07 00:34:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 00:34:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 00:34:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:34:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:34:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:34:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 00:34:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:34:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:34:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:34:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:34:04,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:34:05,368 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:34:05,369 INFO L299 CfgBuilder]: Removed 128 assume(true) statements. [2021-11-07 00:34:05,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:34:05 BoogieIcfgContainer [2021-11-07 00:34:05,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:34:05,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:34:05,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:34:05,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:34:05,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:34:03" (1/3) ... [2021-11-07 00:34:05,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a08696c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:34:05, skipping insertion in model container [2021-11-07 00:34:05,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:34:03" (2/3) ... [2021-11-07 00:34:05,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a08696c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:34:05, skipping insertion in model container [2021-11-07 00:34:05,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:34:05" (3/3) ... [2021-11-07 00:34:05,377 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-3.i [2021-11-07 00:34:05,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:34:05,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 00:34:05,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:34:05,425 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 [2021-11-07 00:34:05,426 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 00:34:05,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 301 states have (on average 1.7242524916943522) internal successors, (519), 307 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:05,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 00:34:05,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:05,460 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:05,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:05,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-07 00:34:05,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:05,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582611304] [2021-11-07 00:34:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:05,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:05,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:05,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582611304] [2021-11-07 00:34:05,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582611304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:34:05,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:34:05,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 00:34:05,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843757398] [2021-11-07 00:34:05,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:34:05,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:05,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:34:05,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:34:05,648 INFO L87 Difference]: Start difference. First operand has 308 states, 301 states have (on average 1.7242524916943522) internal successors, (519), 307 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:05,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:05,699 INFO L93 Difference]: Finished difference Result 614 states and 1036 transitions. [2021-11-07 00:34:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:34:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 00:34:05,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:05,709 INFO L225 Difference]: With dead ends: 614 [2021-11-07 00:34:05,709 INFO L226 Difference]: Without dead ends: 254 [2021-11-07 00:34:05,713 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:34:05,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-07 00:34:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-07 00:34:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.342741935483871) internal successors, (333), 253 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:05,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-07 00:34:05,765 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-07 00:34:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:05,767 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-07 00:34:05,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:05,767 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-07 00:34:05,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 00:34:05,769 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:05,769 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:05,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:34:05,770 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:05,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-07 00:34:05,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:05,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310127779] [2021-11-07 00:34:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:05,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:05,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:05,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354344789] [2021-11-07 00:34:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:05,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:05,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:05,844 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) [2021-11-07 00:34:05,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 00:34:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:06,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:34:06,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:06,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:06,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310127779] [2021-11-07 00:34:06,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:06,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354344789] [2021-11-07 00:34:06,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354344789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:34:06,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:34:06,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:34:06,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191470940] [2021-11-07 00:34:06,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:34:06,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:34:06,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:06,190 INFO L87 Difference]: Start difference. First operand 254 states and 333 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:06,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:06,244 INFO L93 Difference]: Finished difference Result 587 states and 769 transitions. [2021-11-07 00:34:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:34:06,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 00:34:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:06,249 INFO L225 Difference]: With dead ends: 587 [2021-11-07 00:34:06,250 INFO L226 Difference]: Without dead ends: 505 [2021-11-07 00:34:06,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-07 00:34:06,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 255. [2021-11-07 00:34:06,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 249 states have (on average 1.3413654618473896) internal successors, (334), 254 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 334 transitions. [2021-11-07 00:34:06,283 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 334 transitions. Word has length 42 [2021-11-07 00:34:06,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:06,283 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 334 transitions. [2021-11-07 00:34:06,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 334 transitions. [2021-11-07 00:34:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 00:34:06,293 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:06,293 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:06,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:06,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:06,519 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1837409632, now seen corresponding path program 1 times [2021-11-07 00:34:06,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:06,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064636696] [2021-11-07 00:34:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:06,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:06,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:06,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938131907] [2021-11-07 00:34:06,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:06,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:06,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:06,550 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) [2021-11-07 00:34:06,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 00:34:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:06,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:34:06,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:07,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:07,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064636696] [2021-11-07 00:34:07,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:07,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938131907] [2021-11-07 00:34:07,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938131907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:34:07,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:34:07,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:34:07,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088893355] [2021-11-07 00:34:07,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:34:07,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:07,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:34:07,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:07,188 INFO L87 Difference]: Start difference. First operand 255 states and 334 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:07,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:07,262 INFO L93 Difference]: Finished difference Result 528 states and 696 transitions. [2021-11-07 00:34:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:34:07,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 00:34:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:07,264 INFO L225 Difference]: With dead ends: 528 [2021-11-07 00:34:07,264 INFO L226 Difference]: Without dead ends: 276 [2021-11-07 00:34:07,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:07,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-07 00:34:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2021-11-07 00:34:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 269 states have (on average 1.3159851301115242) internal successors, (354), 274 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 354 transitions. [2021-11-07 00:34:07,279 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 354 transitions. Word has length 140 [2021-11-07 00:34:07,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:07,280 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 354 transitions. [2021-11-07 00:34:07,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 354 transitions. [2021-11-07 00:34:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 00:34:07,288 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:07,288 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:07,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:07,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-07 00:34:07,496 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:07,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:07,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1273244828, now seen corresponding path program 1 times [2021-11-07 00:34:07,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:07,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564899894] [2021-11-07 00:34:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:07,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:07,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:07,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988311219] [2021-11-07 00:34:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:07,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:07,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:07,538 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) [2021-11-07 00:34:07,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 00:34:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:07,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:34:07,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:08,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:08,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564899894] [2021-11-07 00:34:08,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:08,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988311219] [2021-11-07 00:34:08,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988311219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:34:08,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:34:08,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:34:08,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771155066] [2021-11-07 00:34:08,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:34:08,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:08,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:34:08,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:08,078 INFO L87 Difference]: Start difference. First operand 275 states and 354 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:08,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:08,134 INFO L93 Difference]: Finished difference Result 568 states and 736 transitions. [2021-11-07 00:34:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:34:08,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 00:34:08,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:08,137 INFO L225 Difference]: With dead ends: 568 [2021-11-07 00:34:08,137 INFO L226 Difference]: Without dead ends: 296 [2021-11-07 00:34:08,139 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:08,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-07 00:34:08,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2021-11-07 00:34:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.2941176470588236) internal successors, (374), 294 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 374 transitions. [2021-11-07 00:34:08,144 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 374 transitions. Word has length 140 [2021-11-07 00:34:08,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:08,145 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 374 transitions. [2021-11-07 00:34:08,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 374 transitions. [2021-11-07 00:34:08,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 00:34:08,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:08,147 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:08,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 00:34:08,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:08,372 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:08,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:08,372 INFO L85 PathProgramCache]: Analyzing trace with hash -882913824, now seen corresponding path program 1 times [2021-11-07 00:34:08,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:08,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048219661] [2021-11-07 00:34:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:08,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:08,390 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:08,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72534725] [2021-11-07 00:34:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:08,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:08,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:08,396 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) [2021-11-07 00:34:08,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 00:34:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:08,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:34:08,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:34:08,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:08,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048219661] [2021-11-07 00:34:08,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:08,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72534725] [2021-11-07 00:34:08,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72534725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:34:08,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:34:08,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:34:08,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121271462] [2021-11-07 00:34:08,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:34:08,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:08,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:34:08,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:08,960 INFO L87 Difference]: Start difference. First operand 295 states and 374 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:09,013 INFO L93 Difference]: Finished difference Result 397 states and 510 transitions. [2021-11-07 00:34:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:34:09,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 00:34:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:09,016 INFO L225 Difference]: With dead ends: 397 [2021-11-07 00:34:09,017 INFO L226 Difference]: Without dead ends: 316 [2021-11-07 00:34:09,017 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-07 00:34:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-11-07 00:34:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 309 states have (on average 1.2750809061488673) internal successors, (394), 314 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 394 transitions. [2021-11-07 00:34:09,023 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 394 transitions. Word has length 140 [2021-11-07 00:34:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:09,023 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 394 transitions. [2021-11-07 00:34:09,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 394 transitions. [2021-11-07 00:34:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 00:34:09,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:09,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:09,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:09,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:09,248 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:09,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:09,248 INFO L85 PathProgramCache]: Analyzing trace with hash 115522276, now seen corresponding path program 1 times [2021-11-07 00:34:09,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:09,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337725541] [2021-11-07 00:34:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:09,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:09,265 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:09,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644297762] [2021-11-07 00:34:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:09,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:09,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:09,267 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) [2021-11-07 00:34:09,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 00:34:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:09,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:34:09,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:09,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:09,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337725541] [2021-11-07 00:34:09,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:09,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644297762] [2021-11-07 00:34:09,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644297762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:34:09,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:34:09,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 00:34:09,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715584191] [2021-11-07 00:34:09,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:34:09,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:34:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:34:09,861 INFO L87 Difference]: Start difference. First operand 315 states and 394 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:09,932 INFO L93 Difference]: Finished difference Result 619 states and 777 transitions. [2021-11-07 00:34:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:34:09,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 00:34:09,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:09,934 INFO L225 Difference]: With dead ends: 619 [2021-11-07 00:34:09,934 INFO L226 Difference]: Without dead ends: 307 [2021-11-07 00:34:09,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:34:09,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-07 00:34:09,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2021-11-07 00:34:09,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 295 states have (on average 1.264406779661017) internal successors, (373), 300 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:09,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 373 transitions. [2021-11-07 00:34:09,959 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 373 transitions. Word has length 140 [2021-11-07 00:34:09,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:09,959 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 373 transitions. [2021-11-07 00:34:09,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 373 transitions. [2021-11-07 00:34:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 00:34:09,961 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:09,961 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:09,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:10,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:10,176 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:10,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:10,176 INFO L85 PathProgramCache]: Analyzing trace with hash 32737814, now seen corresponding path program 1 times [2021-11-07 00:34:10,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:10,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280618656] [2021-11-07 00:34:10,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:10,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:10,195 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:10,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287628451] [2021-11-07 00:34:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:10,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:10,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:10,197 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) [2021-11-07 00:34:10,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 00:34:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:10,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:34:10,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:10,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:10,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280618656] [2021-11-07 00:34:10,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:10,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287628451] [2021-11-07 00:34:10,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287628451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:34:10,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:34:10,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 00:34:10,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595273750] [2021-11-07 00:34:10,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:34:10,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:10,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:34:10,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:34:10,802 INFO L87 Difference]: Start difference. First operand 301 states and 373 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:10,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:10,861 INFO L93 Difference]: Finished difference Result 680 states and 844 transitions. [2021-11-07 00:34:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:34:10,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 00:34:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:10,865 INFO L225 Difference]: With dead ends: 680 [2021-11-07 00:34:10,865 INFO L226 Difference]: Without dead ends: 382 [2021-11-07 00:34:10,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:34:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-07 00:34:10,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 287. [2021-11-07 00:34:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 281 states have (on average 1.2526690391459074) internal successors, (352), 286 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 352 transitions. [2021-11-07 00:34:10,873 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 352 transitions. Word has length 140 [2021-11-07 00:34:10,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:10,873 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 352 transitions. [2021-11-07 00:34:10,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:10,874 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 352 transitions. [2021-11-07 00:34:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 00:34:10,875 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:10,875 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:10,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-07 00:34:11,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:11,096 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:11,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:11,096 INFO L85 PathProgramCache]: Analyzing trace with hash -577227484, now seen corresponding path program 1 times [2021-11-07 00:34:11,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:11,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680565584] [2021-11-07 00:34:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:11,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:11,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:11,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47502892] [2021-11-07 00:34:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:11,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:11,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:11,146 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) [2021-11-07 00:34:11,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 00:34:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:11,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:34:11,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:34:11,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:11,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680565584] [2021-11-07 00:34:11,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:11,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47502892] [2021-11-07 00:34:11,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47502892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:34:11,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:34:11,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 00:34:11,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889661298] [2021-11-07 00:34:11,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:34:11,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:11,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:34:11,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:34:11,799 INFO L87 Difference]: Start difference. First operand 287 states and 352 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:11,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:11,870 INFO L93 Difference]: Finished difference Result 379 states and 468 transitions. [2021-11-07 00:34:11,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:34:11,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 00:34:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:11,872 INFO L225 Difference]: With dead ends: 379 [2021-11-07 00:34:11,872 INFO L226 Difference]: Without dead ends: 278 [2021-11-07 00:34:11,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:34:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-07 00:34:11,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2021-11-07 00:34:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 267 states have (on average 1.2397003745318351) internal successors, (331), 272 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:11,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 331 transitions. [2021-11-07 00:34:11,879 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 331 transitions. Word has length 140 [2021-11-07 00:34:11,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:11,880 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 331 transitions. [2021-11-07 00:34:11,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 331 transitions. [2021-11-07 00:34:11,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 00:34:11,883 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:11,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:11,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:12,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:12,099 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:12,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1460076330, now seen corresponding path program 1 times [2021-11-07 00:34:12,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:12,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811209149] [2021-11-07 00:34:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:12,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:12,127 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:12,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713686881] [2021-11-07 00:34:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:12,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:12,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:12,136 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) [2021-11-07 00:34:12,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 00:34:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:12,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:34:12,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:12,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:12,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811209149] [2021-11-07 00:34:12,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:12,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713686881] [2021-11-07 00:34:12,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713686881] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:34:12,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:34:12,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 00:34:12,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891613874] [2021-11-07 00:34:12,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:34:12,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:12,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:34:12,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:34:12,839 INFO L87 Difference]: Start difference. First operand 273 states and 331 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:12,883 INFO L93 Difference]: Finished difference Result 811 states and 984 transitions. [2021-11-07 00:34:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:34:12,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 00:34:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:12,886 INFO L225 Difference]: With dead ends: 811 [2021-11-07 00:34:12,886 INFO L226 Difference]: Without dead ends: 723 [2021-11-07 00:34:12,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:34:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-07 00:34:12,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 455. [2021-11-07 00:34:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 449 states have (on average 1.2316258351893097) internal successors, (553), 454 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 553 transitions. [2021-11-07 00:34:12,900 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 553 transitions. Word has length 140 [2021-11-07 00:34:12,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:12,902 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 553 transitions. [2021-11-07 00:34:12,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:12,902 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 553 transitions. [2021-11-07 00:34:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-07 00:34:12,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:12,905 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:12,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:13,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-07 00:34:13,123 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:13,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:13,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1379453485, now seen corresponding path program 2 times [2021-11-07 00:34:13,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:13,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842717020] [2021-11-07 00:34:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:13,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:13,140 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:13,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607819909] [2021-11-07 00:34:13,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:34:13,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:13,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:13,142 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) [2021-11-07 00:34:13,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 00:34:13,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:34:13,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:34:13,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:34:13,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:14,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:14,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842717020] [2021-11-07 00:34:14,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:14,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607819909] [2021-11-07 00:34:14,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607819909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:34:14,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:34:14,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-07 00:34:14,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062944522] [2021-11-07 00:34:14,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:34:14,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:14,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:34:14,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:34:14,132 INFO L87 Difference]: Start difference. First operand 455 states and 553 transitions. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:14,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:14,195 INFO L93 Difference]: Finished difference Result 1080 states and 1310 transitions. [2021-11-07 00:34:14,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:34:14,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-07 00:34:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:14,199 INFO L225 Difference]: With dead ends: 1080 [2021-11-07 00:34:14,200 INFO L226 Difference]: Without dead ends: 992 [2021-11-07 00:34:14,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:34:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-07 00:34:14,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 637. [2021-11-07 00:34:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 631 states have (on average 1.2282091917591125) internal successors, (775), 636 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 775 transitions. [2021-11-07 00:34:14,217 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 775 transitions. Word has length 238 [2021-11-07 00:34:14,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:14,217 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 775 transitions. [2021-11-07 00:34:14,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:14,217 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 775 transitions. [2021-11-07 00:34:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-07 00:34:14,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:14,221 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:14,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:14,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 00:34:14,431 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:14,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:14,432 INFO L85 PathProgramCache]: Analyzing trace with hash 449267140, now seen corresponding path program 3 times [2021-11-07 00:34:14,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:14,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383523488] [2021-11-07 00:34:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:14,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:14,448 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:14,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55161665] [2021-11-07 00:34:14,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:34:14,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:14,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:14,450 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) [2021-11-07 00:34:14,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 00:34:14,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 00:34:14,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:34:14,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:34:14,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-11-07 00:34:16,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:16,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383523488] [2021-11-07 00:34:16,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:16,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55161665] [2021-11-07 00:34:16,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55161665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:34:16,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:34:16,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:34:16,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047772875] [2021-11-07 00:34:16,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:34:16,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:34:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:16,529 INFO L87 Difference]: Start difference. First operand 637 states and 775 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:16,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:16,583 INFO L93 Difference]: Finished difference Result 1198 states and 1457 transitions. [2021-11-07 00:34:16,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:34:16,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 336 [2021-11-07 00:34:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:16,586 INFO L225 Difference]: With dead ends: 1198 [2021-11-07 00:34:16,586 INFO L226 Difference]: Without dead ends: 706 [2021-11-07 00:34:16,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:16,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-11-07 00:34:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 694. [2021-11-07 00:34:16,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 688 states have (on average 1.2311046511627908) internal successors, (847), 693 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 847 transitions. [2021-11-07 00:34:16,602 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 847 transitions. Word has length 336 [2021-11-07 00:34:16,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:16,603 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 847 transitions. [2021-11-07 00:34:16,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:16,603 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 847 transitions. [2021-11-07 00:34:16,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-11-07 00:34:16,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:16,607 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:16,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:16,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 00:34:16,824 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:16,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:16,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1643774844, now seen corresponding path program 1 times [2021-11-07 00:34:16,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:16,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712455557] [2021-11-07 00:34:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:16,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:16,854 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:16,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754810247] [2021-11-07 00:34:16,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:16,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:16,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:16,856 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) [2021-11-07 00:34:16,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 00:34:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:17,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:34:17,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:18,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:18,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712455557] [2021-11-07 00:34:18,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:18,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754810247] [2021-11-07 00:34:18,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754810247] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:34:18,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:34:18,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-07 00:34:18,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515225550] [2021-11-07 00:34:18,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:34:18,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:34:18,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:34:18,393 INFO L87 Difference]: Start difference. First operand 694 states and 847 transitions. Second operand has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:18,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:18,464 INFO L93 Difference]: Finished difference Result 1453 states and 1781 transitions. [2021-11-07 00:34:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:34:18,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343 [2021-11-07 00:34:18,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:18,470 INFO L225 Difference]: With dead ends: 1453 [2021-11-07 00:34:18,470 INFO L226 Difference]: Without dead ends: 1306 [2021-11-07 00:34:18,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:34:18,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-11-07 00:34:18,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 876. [2021-11-07 00:34:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 870 states have (on average 1.228735632183908) internal successors, (1069), 875 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1069 transitions. [2021-11-07 00:34:18,492 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1069 transitions. Word has length 343 [2021-11-07 00:34:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:18,492 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1069 transitions. [2021-11-07 00:34:18,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:18,493 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1069 transitions. [2021-11-07 00:34:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-07 00:34:18,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:18,500 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:18,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:18,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 00:34:18,716 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:18,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash 461433435, now seen corresponding path program 2 times [2021-11-07 00:34:18,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:18,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480035400] [2021-11-07 00:34:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:18,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:18,738 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:18,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496043638] [2021-11-07 00:34:18,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:34:18,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:18,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:18,740 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) [2021-11-07 00:34:18,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 00:34:19,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:34:19,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:34:19,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:34:19,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:20,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:20,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480035400] [2021-11-07 00:34:20,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:20,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496043638] [2021-11-07 00:34:20,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496043638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:34:20,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:34:20,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-07 00:34:20,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280613378] [2021-11-07 00:34:20,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 00:34:20,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 00:34:20,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:34:20,535 INFO L87 Difference]: Start difference. First operand 876 states and 1069 transitions. Second operand has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:20,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:20,611 INFO L93 Difference]: Finished difference Result 1781 states and 2182 transitions. [2021-11-07 00:34:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 00:34:20,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 441 [2021-11-07 00:34:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:20,618 INFO L225 Difference]: With dead ends: 1781 [2021-11-07 00:34:20,618 INFO L226 Difference]: Without dead ends: 1634 [2021-11-07 00:34:20,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:34:20,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2021-11-07 00:34:20,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1058. [2021-11-07 00:34:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1052 states have (on average 1.2271863117870723) internal successors, (1291), 1057 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1291 transitions. [2021-11-07 00:34:20,645 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1291 transitions. Word has length 441 [2021-11-07 00:34:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:20,646 INFO L470 AbstractCegarLoop]: Abstraction has 1058 states and 1291 transitions. [2021-11-07 00:34:20,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:20,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1291 transitions. [2021-11-07 00:34:20,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2021-11-07 00:34:20,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:20,650 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:20,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:20,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-07 00:34:20,872 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:20,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:20,873 INFO L85 PathProgramCache]: Analyzing trace with hash 511535730, now seen corresponding path program 3 times [2021-11-07 00:34:20,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:20,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017265978] [2021-11-07 00:34:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:20,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:20,895 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:20,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13695629] [2021-11-07 00:34:20,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:34:20,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:20,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:20,897 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) [2021-11-07 00:34:20,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 00:34:21,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 00:34:21,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:34:21,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:34:21,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2021-11-07 00:34:23,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:23,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017265978] [2021-11-07 00:34:23,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:23,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13695629] [2021-11-07 00:34:23,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13695629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:34:23,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:34:23,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:34:23,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247932738] [2021-11-07 00:34:23,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:34:23,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:34:23,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:23,825 INFO L87 Difference]: Start difference. First operand 1058 states and 1291 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:23,875 INFO L93 Difference]: Finished difference Result 2058 states and 2516 transitions. [2021-11-07 00:34:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:34:23,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 539 [2021-11-07 00:34:23,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:23,880 INFO L225 Difference]: With dead ends: 2058 [2021-11-07 00:34:23,881 INFO L226 Difference]: Without dead ends: 1056 [2021-11-07 00:34:23,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:23,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2021-11-07 00:34:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1056. [2021-11-07 00:34:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1050 states have (on average 1.2266666666666666) internal successors, (1288), 1055 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1288 transitions. [2021-11-07 00:34:23,911 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1288 transitions. Word has length 539 [2021-11-07 00:34:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:23,911 INFO L470 AbstractCegarLoop]: Abstraction has 1056 states and 1288 transitions. [2021-11-07 00:34:23,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:23,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1288 transitions. [2021-11-07 00:34:23,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2021-11-07 00:34:23,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:23,915 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:23,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:24,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 00:34:24,137 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:24,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:24,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1357586562, now seen corresponding path program 1 times [2021-11-07 00:34:24,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:24,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334007769] [2021-11-07 00:34:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:24,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:24,181 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:24,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405749802] [2021-11-07 00:34:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:24,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:24,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:24,187 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) [2021-11-07 00:34:24,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 00:34:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:25,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:34:25,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:26,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:26,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334007769] [2021-11-07 00:34:26,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:26,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405749802] [2021-11-07 00:34:26,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405749802] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:34:26,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:34:26,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-07 00:34:26,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085382107] [2021-11-07 00:34:26,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:34:26,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:26,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:34:26,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:34:26,532 INFO L87 Difference]: Start difference. First operand 1056 states and 1288 transitions. Second operand has 8 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:26,639 INFO L93 Difference]: Finished difference Result 1961 states and 2401 transitions. [2021-11-07 00:34:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:34:26,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 546 [2021-11-07 00:34:26,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:26,645 INFO L225 Difference]: With dead ends: 1961 [2021-11-07 00:34:26,645 INFO L226 Difference]: Without dead ends: 1814 [2021-11-07 00:34:26,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:34:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2021-11-07 00:34:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1238. [2021-11-07 00:34:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1232 states have (on average 1.2256493506493507) internal successors, (1510), 1237 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1510 transitions. [2021-11-07 00:34:26,680 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1510 transitions. Word has length 546 [2021-11-07 00:34:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:26,681 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1510 transitions. [2021-11-07 00:34:26,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1510 transitions. [2021-11-07 00:34:26,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2021-11-07 00:34:26,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:26,686 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:26,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:26,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:26,904 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash 529047257, now seen corresponding path program 2 times [2021-11-07 00:34:26,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:26,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301143624] [2021-11-07 00:34:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:26,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:26,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:26,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758178832] [2021-11-07 00:34:26,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:34:26,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:26,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:26,943 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:34:26,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 00:34:28,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:34:28,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:34:28,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 00:34:28,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 0 proven. 1456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:29,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:29,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301143624] [2021-11-07 00:34:29,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:29,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758178832] [2021-11-07 00:34:29,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758178832] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:34:29,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:34:29,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-07 00:34:29,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076637876] [2021-11-07 00:34:29,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 00:34:29,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:29,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 00:34:29,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:34:29,773 INFO L87 Difference]: Start difference. First operand 1238 states and 1510 transitions. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:29,889 INFO L93 Difference]: Finished difference Result 2289 states and 2802 transitions. [2021-11-07 00:34:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:34:29,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 644 [2021-11-07 00:34:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:29,896 INFO L225 Difference]: With dead ends: 2289 [2021-11-07 00:34:29,896 INFO L226 Difference]: Without dead ends: 2142 [2021-11-07 00:34:29,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:34:29,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2021-11-07 00:34:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1420. [2021-11-07 00:34:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1414 states have (on average 1.224893917963225) internal successors, (1732), 1419 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:29,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1732 transitions. [2021-11-07 00:34:29,944 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1732 transitions. Word has length 644 [2021-11-07 00:34:29,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:29,945 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 1732 transitions. [2021-11-07 00:34:29,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1732 transitions. [2021-11-07 00:34:29,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2021-11-07 00:34:29,959 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:29,960 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:30,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:30,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 00:34:30,192 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:30,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:30,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1214279824, now seen corresponding path program 3 times [2021-11-07 00:34:30,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:30,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789247405] [2021-11-07 00:34:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:30,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:30,225 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:30,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166002411] [2021-11-07 00:34:30,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:34:30,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:30,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:30,227 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:34:30,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 00:34:31,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 00:34:31,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:34:31,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:34:31,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2021-11-07 00:34:33,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:33,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789247405] [2021-11-07 00:34:33,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:33,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166002411] [2021-11-07 00:34:33,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166002411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:34:33,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:34:33,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:34:33,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273646311] [2021-11-07 00:34:33,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:34:33,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:34:33,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:33,158 INFO L87 Difference]: Start difference. First operand 1420 states and 1732 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:33,263 INFO L93 Difference]: Finished difference Result 3291 states and 4014 transitions. [2021-11-07 00:34:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:34:33,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 742 [2021-11-07 00:34:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:33,271 INFO L225 Difference]: With dead ends: 3291 [2021-11-07 00:34:33,271 INFO L226 Difference]: Without dead ends: 2369 [2021-11-07 00:34:33,273 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:34:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2021-11-07 00:34:33,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2357. [2021-11-07 00:34:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 2351 states have (on average 1.2216078264568269) internal successors, (2872), 2356 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 2872 transitions. [2021-11-07 00:34:33,328 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 2872 transitions. Word has length 742 [2021-11-07 00:34:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:33,329 INFO L470 AbstractCegarLoop]: Abstraction has 2357 states and 2872 transitions. [2021-11-07 00:34:33,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 2872 transitions. [2021-11-07 00:34:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2021-11-07 00:34:33,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:33,336 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:33,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-07 00:34:33,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 00:34:33,550 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:33,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1205050408, now seen corresponding path program 1 times [2021-11-07 00:34:33,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:33,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273238396] [2021-11-07 00:34:33,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:33,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:33,600 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:33,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837988725] [2021-11-07 00:34:33,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:33,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:33,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:33,602 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:34:33,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 00:34:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:34:35,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 00:34:35,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 0 proven. 2041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:37,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:37,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273238396] [2021-11-07 00:34:37,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:37,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837988725] [2021-11-07 00:34:37,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837988725] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:34:37,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:34:37,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-07 00:34:37,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021897551] [2021-11-07 00:34:37,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:34:37,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:34:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:34:37,010 INFO L87 Difference]: Start difference. First operand 2357 states and 2872 transitions. Second operand has 10 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:37,188 INFO L93 Difference]: Finished difference Result 3793 states and 4625 transitions. [2021-11-07 00:34:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 00:34:37,189 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 749 [2021-11-07 00:34:37,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:37,203 INFO L225 Difference]: With dead ends: 3793 [2021-11-07 00:34:37,203 INFO L226 Difference]: Without dead ends: 3602 [2021-11-07 00:34:37,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:34:37,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-11-07 00:34:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 2710. [2021-11-07 00:34:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2704 states have (on average 1.2211538461538463) internal successors, (3302), 2709 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3302 transitions. [2021-11-07 00:34:37,296 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3302 transitions. Word has length 749 [2021-11-07 00:34:37,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:37,297 INFO L470 AbstractCegarLoop]: Abstraction has 2710 states and 3302 transitions. [2021-11-07 00:34:37,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:37,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3302 transitions. [2021-11-07 00:34:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2021-11-07 00:34:37,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:37,309 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:37,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:37,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 00:34:37,536 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:37,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash -582549215, now seen corresponding path program 2 times [2021-11-07 00:34:37,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:37,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251774643] [2021-11-07 00:34:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:37,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:37,583 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:37,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993059104] [2021-11-07 00:34:37,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:34:37,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:37,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:37,585 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:34:37,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 00:34:39,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:34:39,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:34:39,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 2256 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 00:34:39,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:34:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 0 proven. 2724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:34:41,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 00:34:41,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251774643] [2021-11-07 00:34:41,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:34:41,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993059104] [2021-11-07 00:34:41,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993059104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:34:41,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:34:41,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-07 00:34:41,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011003878] [2021-11-07 00:34:41,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 00:34:41,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 00:34:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 00:34:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:34:41,382 INFO L87 Difference]: Start difference. First operand 2710 states and 3302 transitions. Second operand has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:41,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:34:41,527 INFO L93 Difference]: Finished difference Result 4292 states and 5233 transitions. [2021-11-07 00:34:41,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 00:34:41,527 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 847 [2021-11-07 00:34:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:34:41,540 INFO L225 Difference]: With dead ends: 4292 [2021-11-07 00:34:41,540 INFO L226 Difference]: Without dead ends: 4101 [2021-11-07 00:34:41,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 837 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:34:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2021-11-07 00:34:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 3063. [2021-11-07 00:34:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 3057 states have (on average 1.2208047105004907) internal successors, (3732), 3062 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 3732 transitions. [2021-11-07 00:34:41,614 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 3732 transitions. Word has length 847 [2021-11-07 00:34:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:34:41,616 INFO L470 AbstractCegarLoop]: Abstraction has 3063 states and 3732 transitions. [2021-11-07 00:34:41,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:34:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 3732 transitions. [2021-11-07 00:34:41,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2021-11-07 00:34:41,625 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:34:41,626 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:34:41,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 00:34:41,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:41,864 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:34:41,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:34:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1663845418, now seen corresponding path program 3 times [2021-11-07 00:34:41,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 00:34:41,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628207822] [2021-11-07 00:34:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:34:41,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:34:41,914 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:34:41,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747319369] [2021-11-07 00:34:41,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:34:41,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:34:41,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 00:34:41,920 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:34:41,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process Killed by 15