./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:26:50,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:26:50,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:26:50,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:26:50,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:26:50,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:26:50,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:26:50,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:26:50,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:26:50,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:26:50,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:26:50,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:26:50,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:26:50,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:26:50,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:26:50,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:26:50,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:26:50,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:26:50,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:26:50,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:26:50,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:26:50,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:26:50,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:26:50,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:26:50,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:26:50,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:26:50,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:26:50,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:26:50,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:26:50,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:26:50,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:26:50,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:26:50,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:26:50,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:26:50,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:26:50,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:26:50,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:26:50,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:26:50,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:26:50,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:26:50,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:26:50,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:26:50,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:26:50,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:26:50,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:26:50,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:26:50,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:26:50,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:26:50,768 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:26:50,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:26:50,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:26:50,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:26:50,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:26:50,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:26:50,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:26:50,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:26:50,770 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:26:50,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:26:50,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:26:50,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:26:50,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:26:50,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:26:50,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:26:50,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:26:50,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:26:50,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:26:50,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:26:50,772 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:26:50,772 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:26:50,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:26:50,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:26:50,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 [2021-11-06 15:26:50,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:26:50,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:26:50,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:26:50,973 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:26:50,976 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:26:50,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:26:51,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd92e05e6/41db9e91ab0442cc9cea0a4e3f18dcd2/FLAG400363770 [2021-11-06 15:26:51,525 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:26:51,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:26:51,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd92e05e6/41db9e91ab0442cc9cea0a4e3f18dcd2/FLAG400363770 [2021-11-06 15:26:51,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd92e05e6/41db9e91ab0442cc9cea0a4e3f18dcd2 [2021-11-06 15:26:51,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:26:51,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:26:51,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:26:51,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:26:51,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:26:51,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:26:51" (1/1) ... [2021-11-06 15:26:51,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198ac6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:51, skipping insertion in model container [2021-11-06 15:26:51,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:26:51" (1/1) ... [2021-11-06 15:26:51,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:26:51,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:26:52,546 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/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2021-11-06 15:26:52,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:26:52,617 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:26:52,734 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/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2021-11-06 15:26:52,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:26:52,808 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:26:52,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52 WrapperNode [2021-11-06 15:26:52,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:26:52,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:26:52,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:26:52,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:26:52,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52" (1/1) ... [2021-11-06 15:26:52,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52" (1/1) ... [2021-11-06 15:26:53,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:26:53,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:26:53,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:26:53,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:26:53,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52" (1/1) ... [2021-11-06 15:26:53,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52" (1/1) ... [2021-11-06 15:26:53,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52" (1/1) ... [2021-11-06 15:26:53,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52" (1/1) ... [2021-11-06 15:26:53,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52" (1/1) ... [2021-11-06 15:26:53,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52" (1/1) ... [2021-11-06 15:26:53,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52" (1/1) ... [2021-11-06 15:26:53,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:26:53,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:26:53,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:26:53,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:26:53,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52" (1/1) ... [2021-11-06 15:26:53,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:26:53,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:26:53,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 15:26:53,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 15:26:53,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:26:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:26:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:26:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:26:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:26:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:26:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:26:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:26:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:26:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:26:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:26:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:26:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:26:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:26:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:27:00,810 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:27:00,811 INFO L299 CfgBuilder]: Removed 2531 assume(true) statements. [2021-11-06 15:27:00,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:27:00 BoogieIcfgContainer [2021-11-06 15:27:00,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:27:00,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:27:00,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:27:00,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:27:00,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:26:51" (1/3) ... [2021-11-06 15:27:00,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a5917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:27:00, skipping insertion in model container [2021-11-06 15:27:00,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:52" (2/3) ... [2021-11-06 15:27:00,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a5917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:27:00, skipping insertion in model container [2021-11-06 15:27:00,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:27:00" (3/3) ... [2021-11-06 15:27:00,819 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:27:00,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:27:00,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-06 15:27:00,856 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:27:00,859 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 15:27:00,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-06 15:27:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 2867 states, 2856 states have (on average 1.4334733893557423) internal successors, (4094), 2866 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 15:27:00,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:00,913 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:00,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:00,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:00,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1906996444, now seen corresponding path program 1 times [2021-11-06 15:27:00,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:00,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122059082] [2021-11-06 15:27:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:00,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:01,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:01,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122059082] [2021-11-06 15:27:01,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122059082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:01,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:01,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:27:01,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893547724] [2021-11-06 15:27:01,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:27:01,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:01,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:27:01,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:27:01,497 INFO L87 Difference]: Start difference. First operand has 2867 states, 2856 states have (on average 1.4334733893557423) internal successors, (4094), 2866 states have internal predecessors, (4094), 0 states have call successors, (0), 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 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:01,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:01,581 INFO L93 Difference]: Finished difference Result 5730 states and 8183 transitions. [2021-11-06 15:27:01,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:27:01,583 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2021-11-06 15:27:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:01,604 INFO L225 Difference]: With dead ends: 5730 [2021-11-06 15:27:01,604 INFO L226 Difference]: Without dead ends: 2852 [2021-11-06 15:27:01,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:27:01,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-11-06 15:27:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2852. [2021-11-06 15:27:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2842 states have (on average 1.423997185080929) internal successors, (4047), 2851 states have internal predecessors, (4047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4047 transitions. [2021-11-06 15:27:01,723 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4047 transitions. Word has length 148 [2021-11-06 15:27:01,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:01,724 INFO L470 AbstractCegarLoop]: Abstraction has 2852 states and 4047 transitions. [2021-11-06 15:27:01,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:01,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4047 transitions. [2021-11-06 15:27:01,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 15:27:01,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:01,726 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:01,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:27:01,727 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:01,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash 267116844, now seen corresponding path program 1 times [2021-11-06 15:27:01,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:01,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751416087] [2021-11-06 15:27:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:01,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:02,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:02,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751416087] [2021-11-06 15:27:02,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751416087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:02,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:02,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:02,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733249964] [2021-11-06 15:27:02,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:02,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:02,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:02,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:02,026 INFO L87 Difference]: Start difference. First operand 2852 states and 4047 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:02,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:02,288 INFO L93 Difference]: Finished difference Result 5784 states and 8213 transitions. [2021-11-06 15:27:02,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:02,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2021-11-06 15:27:02,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:02,297 INFO L225 Difference]: With dead ends: 5784 [2021-11-06 15:27:02,297 INFO L226 Difference]: Without dead ends: 3068 [2021-11-06 15:27:02,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2021-11-06 15:27:02,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2021-11-06 15:27:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3058 states have (on average 1.4192282537606278) internal successors, (4340), 3067 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4340 transitions. [2021-11-06 15:27:02,358 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4340 transitions. Word has length 148 [2021-11-06 15:27:02,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:02,362 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 4340 transitions. [2021-11-06 15:27:02,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4340 transitions. [2021-11-06 15:27:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-06 15:27:02,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:02,366 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:02,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:27:02,366 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:02,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:02,373 INFO L85 PathProgramCache]: Analyzing trace with hash -416763270, now seen corresponding path program 1 times [2021-11-06 15:27:02,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:02,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497446659] [2021-11-06 15:27:02,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:02,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:02,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:02,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497446659] [2021-11-06 15:27:02,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497446659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:02,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:02,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:27:02,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999524359] [2021-11-06 15:27:02,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:02,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:02,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:02,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:02,784 INFO L87 Difference]: Start difference. First operand 3068 states and 4340 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:02,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:02,845 INFO L93 Difference]: Finished difference Result 6000 states and 8505 transitions. [2021-11-06 15:27:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:02,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2021-11-06 15:27:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:02,854 INFO L225 Difference]: With dead ends: 6000 [2021-11-06 15:27:02,854 INFO L226 Difference]: Without dead ends: 3068 [2021-11-06 15:27:02,858 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:02,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2021-11-06 15:27:02,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2021-11-06 15:27:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3058 states have (on average 1.4185742315238719) internal successors, (4338), 3067 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:02,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4338 transitions. [2021-11-06 15:27:02,912 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4338 transitions. Word has length 160 [2021-11-06 15:27:02,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:02,913 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 4338 transitions. [2021-11-06 15:27:02,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:02,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4338 transitions. [2021-11-06 15:27:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-06 15:27:02,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:02,915 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:02,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:27:02,915 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:02,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:02,916 INFO L85 PathProgramCache]: Analyzing trace with hash 15644118, now seen corresponding path program 1 times [2021-11-06 15:27:02,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:02,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689403207] [2021-11-06 15:27:02,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:02,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:03,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:03,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689403207] [2021-11-06 15:27:03,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689403207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:03,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:03,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:27:03,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529955801] [2021-11-06 15:27:03,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:27:03,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:03,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:27:03,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:27:03,181 INFO L87 Difference]: Start difference. First operand 3068 states and 4338 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:03,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:03,382 INFO L93 Difference]: Finished difference Result 6006 states and 8509 transitions. [2021-11-06 15:27:03,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:27:03,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2021-11-06 15:27:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:03,390 INFO L225 Difference]: With dead ends: 6006 [2021-11-06 15:27:03,391 INFO L226 Difference]: Without dead ends: 3068 [2021-11-06 15:27:03,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:27:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2021-11-06 15:27:03,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2021-11-06 15:27:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3058 states have (on average 1.4179202092871157) internal successors, (4336), 3067 states have internal predecessors, (4336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:03,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4336 transitions. [2021-11-06 15:27:03,454 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4336 transitions. Word has length 162 [2021-11-06 15:27:03,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:03,454 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 4336 transitions. [2021-11-06 15:27:03,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:03,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4336 transitions. [2021-11-06 15:27:03,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 15:27:03,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:03,456 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:03,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:27:03,457 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:03,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1424296417, now seen corresponding path program 1 times [2021-11-06 15:27:03,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:03,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511346550] [2021-11-06 15:27:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:03,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:03,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:03,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511346550] [2021-11-06 15:27:03,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511346550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:03,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:03,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:27:03,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887122786] [2021-11-06 15:27:03,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:27:03,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:03,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:27:03,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:27:03,672 INFO L87 Difference]: Start difference. First operand 3068 states and 4336 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:03,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:03,747 INFO L93 Difference]: Finished difference Result 6004 states and 8501 transitions. [2021-11-06 15:27:03,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:27:03,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2021-11-06 15:27:03,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:03,757 INFO L225 Difference]: With dead ends: 6004 [2021-11-06 15:27:03,757 INFO L226 Difference]: Without dead ends: 3062 [2021-11-06 15:27:03,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:27:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2021-11-06 15:27:03,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3062. [2021-11-06 15:27:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 3052 states have (on average 1.4161205766710354) internal successors, (4322), 3061 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4322 transitions. [2021-11-06 15:27:03,813 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4322 transitions. Word has length 165 [2021-11-06 15:27:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:03,813 INFO L470 AbstractCegarLoop]: Abstraction has 3062 states and 4322 transitions. [2021-11-06 15:27:03,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:03,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4322 transitions. [2021-11-06 15:27:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-06 15:27:03,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:03,815 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:03,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:27:03,816 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:03,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1942839939, now seen corresponding path program 1 times [2021-11-06 15:27:03,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:03,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315067626] [2021-11-06 15:27:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:03,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:04,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:04,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315067626] [2021-11-06 15:27:04,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315067626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:04,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:04,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:04,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276598902] [2021-11-06 15:27:04,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:04,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:04,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:04,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:04,113 INFO L87 Difference]: Start difference. First operand 3062 states and 4322 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:04,173 INFO L93 Difference]: Finished difference Result 6016 states and 8507 transitions. [2021-11-06 15:27:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:04,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2021-11-06 15:27:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:04,182 INFO L225 Difference]: With dead ends: 6016 [2021-11-06 15:27:04,182 INFO L226 Difference]: Without dead ends: 3090 [2021-11-06 15:27:04,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2021-11-06 15:27:04,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 3064. [2021-11-06 15:27:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 3054 states have (on average 1.4158480681074002) internal successors, (4324), 3063 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4324 transitions. [2021-11-06 15:27:04,244 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4324 transitions. Word has length 207 [2021-11-06 15:27:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:04,244 INFO L470 AbstractCegarLoop]: Abstraction has 3064 states and 4324 transitions. [2021-11-06 15:27:04,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4324 transitions. [2021-11-06 15:27:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-06 15:27:04,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:04,247 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:04,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:27:04,247 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:04,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:04,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1837808091, now seen corresponding path program 1 times [2021-11-06 15:27:04,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:04,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285523483] [2021-11-06 15:27:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:04,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:04,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:04,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285523483] [2021-11-06 15:27:04,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285523483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:04,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093474375] [2021-11-06 15:27:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:04,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:04,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:04,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:04,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:27:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:05,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 7757 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 15:27:05,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:27:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:05,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093474375] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:05,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:27:05,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 15:27:05,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713575248] [2021-11-06 15:27:05,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:27:05,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:05,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:27:05,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:27:05,986 INFO L87 Difference]: Start difference. First operand 3064 states and 4324 transitions. Second operand has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:06,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:06,070 INFO L93 Difference]: Finished difference Result 6046 states and 8545 transitions. [2021-11-06 15:27:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:27:06,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 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 215 [2021-11-06 15:27:06,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:06,078 INFO L225 Difference]: With dead ends: 6046 [2021-11-06 15:27:06,078 INFO L226 Difference]: Without dead ends: 3118 [2021-11-06 15:27:06,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:27:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2021-11-06 15:27:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 3092. [2021-11-06 15:27:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3082 states have (on average 1.4146658014276443) internal successors, (4360), 3091 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 4360 transitions. [2021-11-06 15:27:06,144 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 4360 transitions. Word has length 215 [2021-11-06 15:27:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:06,145 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 4360 transitions. [2021-11-06 15:27:06,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 4360 transitions. [2021-11-06 15:27:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-06 15:27:06,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:06,147 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:06,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 15:27:06,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:06,364 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:06,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:06,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1819854541, now seen corresponding path program 2 times [2021-11-06 15:27:06,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:06,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514012762] [2021-11-06 15:27:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:06,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 15:27:06,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:06,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514012762] [2021-11-06 15:27:06,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514012762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:06,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:06,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:06,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645227548] [2021-11-06 15:27:06,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:06,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:06,658 INFO L87 Difference]: Start difference. First operand 3092 states and 4360 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:07,977 INFO L93 Difference]: Finished difference Result 5851 states and 8285 transitions. [2021-11-06 15:27:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:07,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 223 [2021-11-06 15:27:07,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:07,986 INFO L225 Difference]: With dead ends: 5851 [2021-11-06 15:27:07,986 INFO L226 Difference]: Without dead ends: 2877 [2021-11-06 15:27:07,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2021-11-06 15:27:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2877. [2021-11-06 15:27:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2867 states have (on average 1.4202999651203347) internal successors, (4072), 2876 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4072 transitions. [2021-11-06 15:27:08,082 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4072 transitions. Word has length 223 [2021-11-06 15:27:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:08,082 INFO L470 AbstractCegarLoop]: Abstraction has 2877 states and 4072 transitions. [2021-11-06 15:27:08,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4072 transitions. [2021-11-06 15:27:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-06 15:27:08,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:08,085 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:08,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:27:08,086 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:08,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:08,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1739824914, now seen corresponding path program 1 times [2021-11-06 15:27:08,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:08,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645037439] [2021-11-06 15:27:08,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:08,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:08,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:08,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645037439] [2021-11-06 15:27:08,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645037439] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:08,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445874389] [2021-11-06 15:27:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:08,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:08,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:08,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:08,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 15:27:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:09,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 7809 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 15:27:09,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:27:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:10,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445874389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:10,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:27:10,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 15:27:10,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498785289] [2021-11-06 15:27:10,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:27:10,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:10,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:27:10,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:27:10,157 INFO L87 Difference]: Start difference. First operand 2877 states and 4072 transitions. Second operand has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:10,285 INFO L93 Difference]: Finished difference Result 5502 states and 7818 transitions. [2021-11-06 15:27:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:27:10,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 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 225 [2021-11-06 15:27:10,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:10,293 INFO L225 Difference]: With dead ends: 5502 [2021-11-06 15:27:10,294 INFO L226 Difference]: Without dead ends: 2904 [2021-11-06 15:27:10,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:27:10,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2021-11-06 15:27:10,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2891. [2021-11-06 15:27:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 2881 states have (on average 1.4196459562651857) internal successors, (4090), 2890 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 4090 transitions. [2021-11-06 15:27:10,382 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 4090 transitions. Word has length 225 [2021-11-06 15:27:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:10,382 INFO L470 AbstractCegarLoop]: Abstraction has 2891 states and 4090 transitions. [2021-11-06 15:27:10,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 4090 transitions. [2021-11-06 15:27:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-06 15:27:10,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:10,385 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:10,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 15:27:10,612 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,SelfDestructingSolverStorable8 [2021-11-06 15:27:10,613 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:10,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash 378769990, now seen corresponding path program 2 times [2021-11-06 15:27:10,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:10,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253864505] [2021-11-06 15:27:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:10,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:10,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:10,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253864505] [2021-11-06 15:27:10,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253864505] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:10,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615175156] [2021-11-06 15:27:10,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:27:10,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:10,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:10,890 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:10,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 15:27:14,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 15:27:14,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:27:14,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 7325 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 15:27:14,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:27:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-06 15:27:15,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615175156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:15,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:27:15,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-06 15:27:15,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841730760] [2021-11-06 15:27:15,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:15,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:15,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:15,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:27:15,026 INFO L87 Difference]: Start difference. First operand 2891 states and 4090 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:15,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:15,387 INFO L93 Difference]: Finished difference Result 5801 states and 8237 transitions. [2021-11-06 15:27:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 233 [2021-11-06 15:27:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:15,403 INFO L225 Difference]: With dead ends: 5801 [2021-11-06 15:27:15,403 INFO L226 Difference]: Without dead ends: 2930 [2021-11-06 15:27:15,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:27:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-11-06 15:27:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2930. [2021-11-06 15:27:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2920 states have (on average 1.414041095890411) internal successors, (4129), 2929 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4129 transitions. [2021-11-06 15:27:15,474 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4129 transitions. Word has length 233 [2021-11-06 15:27:15,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:15,474 INFO L470 AbstractCegarLoop]: Abstraction has 2930 states and 4129 transitions. [2021-11-06 15:27:15,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:15,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4129 transitions. [2021-11-06 15:27:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-06 15:27:15,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:15,477 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:15,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 15:27:15,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:15,703 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:15,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:15,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1464939486, now seen corresponding path program 1 times [2021-11-06 15:27:15,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:15,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112329965] [2021-11-06 15:27:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:15,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:16,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:16,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112329965] [2021-11-06 15:27:16,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112329965] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:16,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732222452] [2021-11-06 15:27:16,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:16,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:16,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:16,058 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:16,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 15:27:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:17,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 8088 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 15:27:17,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:27:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:17,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732222452] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:17,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:27:17,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-06 15:27:17,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009613463] [2021-11-06 15:27:17,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:27:17,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:17,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:27:17,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:27:17,972 INFO L87 Difference]: Start difference. First operand 2930 states and 4129 transitions. Second operand has 7 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:18,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:18,077 INFO L93 Difference]: Finished difference Result 5555 states and 7875 transitions. [2021-11-06 15:27:18,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:27:18,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2021-11-06 15:27:18,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:18,083 INFO L225 Difference]: With dead ends: 5555 [2021-11-06 15:27:18,083 INFO L226 Difference]: Without dead ends: 2957 [2021-11-06 15:27:18,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:27:18,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2021-11-06 15:27:18,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2944. [2021-11-06 15:27:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2944 states, 2934 states have (on average 1.4134287661895024) internal successors, (4147), 2943 states have internal predecessors, (4147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 4147 transitions. [2021-11-06 15:27:18,149 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 4147 transitions. Word has length 272 [2021-11-06 15:27:18,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:18,149 INFO L470 AbstractCegarLoop]: Abstraction has 2944 states and 4147 transitions. [2021-11-06 15:27:18,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 4147 transitions. [2021-11-06 15:27:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-06 15:27:18,152 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:18,152 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:18,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 15:27:18,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:18,367 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:18,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1261537994, now seen corresponding path program 2 times [2021-11-06 15:27:18,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:18,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245901759] [2021-11-06 15:27:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:18,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:18,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:18,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245901759] [2021-11-06 15:27:18,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245901759] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:18,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062804721] [2021-11-06 15:27:18,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:27:18,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:18,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:18,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:18,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 15:27:23,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 15:27:23,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:27:23,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 7325 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 15:27:23,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:27:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-06 15:27:23,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062804721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:23,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:27:23,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-06 15:27:23,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905804475] [2021-11-06 15:27:23,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:23,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:23,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:23,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:27:23,740 INFO L87 Difference]: Start difference. First operand 2944 states and 4147 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:23,940 INFO L93 Difference]: Finished difference Result 5333 states and 7587 transitions. [2021-11-06 15:27:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 280 [2021-11-06 15:27:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:23,948 INFO L225 Difference]: With dead ends: 5333 [2021-11-06 15:27:23,948 INFO L226 Difference]: Without dead ends: 5329 [2021-11-06 15:27:23,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:27:23,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2021-11-06 15:27:24,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 2940. [2021-11-06 15:27:24,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2932 states have (on average 1.4130286493860846) internal successors, (4143), 2939 states have internal predecessors, (4143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 4143 transitions. [2021-11-06 15:27:24,037 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 4143 transitions. Word has length 280 [2021-11-06 15:27:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:24,038 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 4143 transitions. [2021-11-06 15:27:24,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 4143 transitions. [2021-11-06 15:27:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-06 15:27:24,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:24,041 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:24,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 15:27:24,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-06 15:27:24,267 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:24,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:24,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1623761860, now seen corresponding path program 1 times [2021-11-06 15:27:24,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:24,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380469601] [2021-11-06 15:27:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:24,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:24,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:24,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380469601] [2021-11-06 15:27:24,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380469601] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:24,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758013672] [2021-11-06 15:27:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:24,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:24,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:24,613 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:24,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 15:27:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:26,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 8165 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 15:27:26,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:27:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:26,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758013672] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:26,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:27:26,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-11-06 15:27:26,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594050647] [2021-11-06 15:27:26,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 15:27:26,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 15:27:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:27:26,465 INFO L87 Difference]: Start difference. First operand 2940 states and 4143 transitions. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:26,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:26,566 INFO L93 Difference]: Finished difference Result 5561 states and 7885 transitions. [2021-11-06 15:27:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:27:26,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 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 284 [2021-11-06 15:27:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:26,571 INFO L225 Difference]: With dead ends: 5561 [2021-11-06 15:27:26,571 INFO L226 Difference]: Without dead ends: 2967 [2021-11-06 15:27:26,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:27:26,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-11-06 15:27:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2954. [2021-11-06 15:27:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2946 states have (on average 1.4124236252545825) internal successors, (4161), 2953 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 4161 transitions. [2021-11-06 15:27:26,643 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 4161 transitions. Word has length 284 [2021-11-06 15:27:26,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:26,644 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 4161 transitions. [2021-11-06 15:27:26,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 4161 transitions. [2021-11-06 15:27:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-06 15:27:26,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:26,646 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:26,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 15:27:26,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:26,869 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:26,869 INFO L85 PathProgramCache]: Analyzing trace with hash -354068076, now seen corresponding path program 2 times [2021-11-06 15:27:26,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:26,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298234611] [2021-11-06 15:27:26,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:26,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:27,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:27,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298234611] [2021-11-06 15:27:27,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298234611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:27,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331296539] [2021-11-06 15:27:27,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:27:27,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:27,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:27,292 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:27,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 15:27:28,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 15:27:28,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:27:28,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 7357 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 15:27:28,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:27:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-06 15:27:29,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331296539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:29,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:27:29,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-06 15:27:29,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527632417] [2021-11-06 15:27:29,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:29,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:29,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:27:29,452 INFO L87 Difference]: Start difference. First operand 2954 states and 4161 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:29,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:29,621 INFO L93 Difference]: Finished difference Result 5303 states and 7539 transitions. [2021-11-06 15:27:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:29,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2021-11-06 15:27:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:29,631 INFO L225 Difference]: With dead ends: 5303 [2021-11-06 15:27:29,631 INFO L226 Difference]: Without dead ends: 5291 [2021-11-06 15:27:29,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:27:29,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2021-11-06 15:27:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 2942. [2021-11-06 15:27:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2942 states, 2940 states have (on average 1.4112244897959183) internal successors, (4149), 2941 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:29,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 4149 transitions. [2021-11-06 15:27:29,726 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 4149 transitions. Word has length 292 [2021-11-06 15:27:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:29,727 INFO L470 AbstractCegarLoop]: Abstraction has 2942 states and 4149 transitions. [2021-11-06 15:27:29,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 4149 transitions. [2021-11-06 15:27:29,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-06 15:27:29,730 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:29,730 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:29,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 15:27:29,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:29,950 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:29,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:29,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1003950226, now seen corresponding path program 1 times [2021-11-06 15:27:29,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:29,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566273144] [2021-11-06 15:27:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:29,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:30,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:30,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566273144] [2021-11-06 15:27:30,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566273144] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:30,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716247648] [2021-11-06 15:27:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:30,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:30,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:30,309 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:30,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 15:27:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:31,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 8203 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 15:27:31,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:27:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:32,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716247648] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:32,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:27:32,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-11-06 15:27:32,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589036288] [2021-11-06 15:27:32,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 15:27:32,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:32,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 15:27:32,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:27:32,395 INFO L87 Difference]: Start difference. First operand 2942 states and 4149 transitions. Second operand has 9 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:32,522 INFO L93 Difference]: Finished difference Result 5551 states and 7879 transitions. [2021-11-06 15:27:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 15:27:32,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 0 states have call successors, (0), 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 297 [2021-11-06 15:27:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:32,527 INFO L225 Difference]: With dead ends: 5551 [2021-11-06 15:27:32,527 INFO L226 Difference]: Without dead ends: 2969 [2021-11-06 15:27:32,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:27:32,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2021-11-06 15:27:32,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2956. [2021-11-06 15:27:32,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 2954 states have (on average 1.4106296547054842) internal successors, (4167), 2955 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:32,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 4167 transitions. [2021-11-06 15:27:32,596 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 4167 transitions. Word has length 297 [2021-11-06 15:27:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:32,597 INFO L470 AbstractCegarLoop]: Abstraction has 2956 states and 4167 transitions. [2021-11-06 15:27:32,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 4167 transitions. [2021-11-06 15:27:32,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-06 15:27:32,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:32,600 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:32,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 15:27:32,813 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,SelfDestructingSolverStorable14 [2021-11-06 15:27:32,814 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:32,814 INFO L85 PathProgramCache]: Analyzing trace with hash -439778758, now seen corresponding path program 2 times [2021-11-06 15:27:32,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:32,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692422480] [2021-11-06 15:27:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:32,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 126 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:33,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:33,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692422480] [2021-11-06 15:27:33,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692422480] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:33,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007620338] [2021-11-06 15:27:33,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:27:33,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:33,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:33,412 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:33,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 15:27:38,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 15:27:38,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:27:38,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 8248 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 15:27:38,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:27:39,125 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 126 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:39,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007620338] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:39,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:27:39,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-11-06 15:27:39,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450977824] [2021-11-06 15:27:39,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 15:27:39,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:39,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 15:27:39,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-06 15:27:39,129 INFO L87 Difference]: Start difference. First operand 2956 states and 4167 transitions. Second operand has 10 states, 10 states have (on average 31.4) internal successors, (314), 10 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:39,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:39,263 INFO L93 Difference]: Finished difference Result 5565 states and 7897 transitions. [2021-11-06 15:27:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 15:27:39,264 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.4) internal successors, (314), 10 states have internal predecessors, (314), 0 states have call successors, (0), 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 305 [2021-11-06 15:27:39,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:39,273 INFO L225 Difference]: With dead ends: 5565 [2021-11-06 15:27:39,273 INFO L226 Difference]: Without dead ends: 2983 [2021-11-06 15:27:39,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-06 15:27:39,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2021-11-06 15:27:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 2970. [2021-11-06 15:27:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2968 states have (on average 1.4100404312668464) internal successors, (4185), 2969 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4185 transitions. [2021-11-06 15:27:39,353 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4185 transitions. Word has length 305 [2021-11-06 15:27:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:39,354 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 4185 transitions. [2021-11-06 15:27:39,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.4) internal successors, (314), 10 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4185 transitions. [2021-11-06 15:27:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-06 15:27:39,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:39,358 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:39,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-06 15:27:39,573 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,SelfDestructingSolverStorable15 [2021-11-06 15:27:39,574 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:39,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash -6042654, now seen corresponding path program 3 times [2021-11-06 15:27:39,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:39,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795128487] [2021-11-06 15:27:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:39,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 2 proven. 175 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:39,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:39,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795128487] [2021-11-06 15:27:39,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795128487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:39,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854878131] [2021-11-06 15:27:39,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 15:27:39,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:39,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:39,932 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:39,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 15:27:53,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 15:27:53,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:27:54,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 7978 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-06 15:27:54,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:27:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2021-11-06 15:27:55,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854878131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:55,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:27:55,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2021-11-06 15:27:55,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745863908] [2021-11-06 15:27:55,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:27:55,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:55,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:27:55,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-11-06 15:27:55,457 INFO L87 Difference]: Start difference. First operand 2970 states and 4185 transitions. Second operand has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:56,827 INFO L93 Difference]: Finished difference Result 8510 states and 12060 transitions. [2021-11-06 15:27:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 15:27:56,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 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 313 [2021-11-06 15:27:56,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:56,837 INFO L225 Difference]: With dead ends: 8510 [2021-11-06 15:27:56,837 INFO L226 Difference]: Without dead ends: 5733 [2021-11-06 15:27:56,841 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-11-06 15:27:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5733 states. [2021-11-06 15:27:56,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5733 to 2970. [2021-11-06 15:27:56,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2968 states have (on average 1.4097035040431267) internal successors, (4184), 2969 states have internal predecessors, (4184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4184 transitions. [2021-11-06 15:27:56,936 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4184 transitions. Word has length 313 [2021-11-06 15:27:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:56,936 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 4184 transitions. [2021-11-06 15:27:56,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:56,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4184 transitions. [2021-11-06 15:27:56,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-06 15:27:56,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:56,939 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:56,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 15:27:57,153 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,SelfDestructingSolverStorable16 [2021-11-06 15:27:57,154 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:27:57,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:57,154 INFO L85 PathProgramCache]: Analyzing trace with hash 251387782, now seen corresponding path program 1 times [2021-11-06 15:27:57,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:57,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739525691] [2021-11-06 15:27:57,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:57,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 2 proven. 175 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:27:57,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:57,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739525691] [2021-11-06 15:27:57,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739525691] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:57,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292322892] [2021-11-06 15:27:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:57,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:57,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:57,540 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:57,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 15:27:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:59,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 8311 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 15:27:59,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:28:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 2 proven. 175 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:28:00,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292322892] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:00,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:28:00,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-11-06 15:28:00,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929525671] [2021-11-06 15:28:00,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 15:28:00,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:00,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 15:28:00,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-06 15:28:00,177 INFO L87 Difference]: Start difference. First operand 2970 states and 4184 transitions. Second operand has 11 states, 11 states have (on average 29.454545454545453) internal successors, (324), 11 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:00,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:00,348 INFO L93 Difference]: Finished difference Result 5579 states and 7914 transitions. [2021-11-06 15:28:00,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 15:28:00,349 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 29.454545454545453) internal successors, (324), 11 states have internal predecessors, (324), 0 states have call successors, (0), 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 315 [2021-11-06 15:28:00,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:00,373 INFO L225 Difference]: With dead ends: 5579 [2021-11-06 15:28:00,373 INFO L226 Difference]: Without dead ends: 2997 [2021-11-06 15:28:00,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-06 15:28:00,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2021-11-06 15:28:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2984. [2021-11-06 15:28:00,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2982 states have (on average 1.409121395036888) internal successors, (4202), 2983 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:00,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 4202 transitions. [2021-11-06 15:28:00,465 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 4202 transitions. Word has length 315 [2021-11-06 15:28:00,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:00,465 INFO L470 AbstractCegarLoop]: Abstraction has 2984 states and 4202 transitions. [2021-11-06 15:28:00,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.454545454545453) internal successors, (324), 11 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:00,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 4202 transitions. [2021-11-06 15:28:00,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-06 15:28:00,467 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:00,468 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:00,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 15:28:00,691 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,SelfDestructingSolverStorable17 [2021-11-06 15:28:00,692 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:28:00,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1216733906, now seen corresponding path program 2 times [2021-11-06 15:28:00,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:00,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277696616] [2021-11-06 15:28:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:00,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 2 proven. 232 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:28:01,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:01,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277696616] [2021-11-06 15:28:01,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277696616] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:01,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107129181] [2021-11-06 15:28:01,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:28:01,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:28:01,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:28:01,085 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:28:01,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 15:28:05,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 15:28:05,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:28:05,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 8356 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 15:28:05,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:28:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 2 proven. 232 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-06 15:28:06,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107129181] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:06,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:28:06,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-11-06 15:28:06,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966678078] [2021-11-06 15:28:06,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 15:28:06,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 15:28:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-06 15:28:06,101 INFO L87 Difference]: Start difference. First operand 2984 states and 4202 transitions. Second operand has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 12 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:06,226 INFO L93 Difference]: Finished difference Result 5580 states and 7915 transitions. [2021-11-06 15:28:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 15:28:06,227 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 12 states have internal predecessors, (332), 0 states have call successors, (0), 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 323 [2021-11-06 15:28:06,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:06,231 INFO L225 Difference]: With dead ends: 5580 [2021-11-06 15:28:06,231 INFO L226 Difference]: Without dead ends: 2998 [2021-11-06 15:28:06,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-06 15:28:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2021-11-06 15:28:06,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2998. [2021-11-06 15:28:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2996 states have (on average 1.4085447263017357) internal successors, (4220), 2997 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 4220 transitions. [2021-11-06 15:28:06,332 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 4220 transitions. Word has length 323 [2021-11-06 15:28:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:06,332 INFO L470 AbstractCegarLoop]: Abstraction has 2998 states and 4220 transitions. [2021-11-06 15:28:06,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 12 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 4220 transitions. [2021-11-06 15:28:06,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-11-06 15:28:06,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:06,336 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:06,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-06 15:28:06,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:28:06,555 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:28:06,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1655426346, now seen corresponding path program 3 times [2021-11-06 15:28:06,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:06,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257487923] [2021-11-06 15:28:06,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:06,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-06 15:28:06,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:06,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257487923] [2021-11-06 15:28:06,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257487923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:06,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:06,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:28:06,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207645095] [2021-11-06 15:28:06,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:28:06,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:06,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:28:06,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:28:06,949 INFO L87 Difference]: Start difference. First operand 2998 states and 4220 transitions. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:07,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:07,168 INFO L93 Difference]: Finished difference Result 8525 states and 12077 transitions. [2021-11-06 15:28:07,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:28:07,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 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 331 [2021-11-06 15:28:07,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:07,178 INFO L225 Difference]: With dead ends: 8525 [2021-11-06 15:28:07,178 INFO L226 Difference]: Without dead ends: 5731 [2021-11-06 15:28:07,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:28:07,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5731 states. [2021-11-06 15:28:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5731 to 2998. [2021-11-06 15:28:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2996 states have (on average 1.408210947930574) internal successors, (4219), 2997 states have internal predecessors, (4219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 4219 transitions. [2021-11-06 15:28:07,295 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 4219 transitions. Word has length 331 [2021-11-06 15:28:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:07,295 INFO L470 AbstractCegarLoop]: Abstraction has 2998 states and 4219 transitions. [2021-11-06 15:28:07,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 4219 transitions. [2021-11-06 15:28:07,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-11-06 15:28:07,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:07,301 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:07,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 15:28:07,301 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:28:07,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:07,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1111730830, now seen corresponding path program 1 times [2021-11-06 15:28:07,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:07,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861473025] [2021-11-06 15:28:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:07,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-06 15:28:08,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:08,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861473025] [2021-11-06 15:28:08,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861473025] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:08,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091549335] [2021-11-06 15:28:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:08,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:28:08,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:28:08,084 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:28:08,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 15:28:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:25,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 8419 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 15:28:25,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:28:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-06 15:28:25,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091549335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:25,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:28:25,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 15:28:25,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911015725] [2021-11-06 15:28:25,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:28:25,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:25,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:28:25,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:28:25,990 INFO L87 Difference]: Start difference. First operand 2998 states and 4219 transitions. Second operand has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:26,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:26,416 INFO L93 Difference]: Finished difference Result 6014 states and 8494 transitions. [2021-11-06 15:28:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:28:26,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 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 333 [2021-11-06 15:28:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:26,420 INFO L225 Difference]: With dead ends: 6014 [2021-11-06 15:28:26,420 INFO L226 Difference]: Without dead ends: 3037 [2021-11-06 15:28:26,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:28:26,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2021-11-06 15:28:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 3037. [2021-11-06 15:28:26,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3035 states have (on average 1.4029654036243822) internal successors, (4258), 3036 states have internal predecessors, (4258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4258 transitions. [2021-11-06 15:28:26,516 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4258 transitions. Word has length 333 [2021-11-06 15:28:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:26,516 INFO L470 AbstractCegarLoop]: Abstraction has 3037 states and 4258 transitions. [2021-11-06 15:28:26,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4258 transitions. [2021-11-06 15:28:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-11-06 15:28:26,518 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:26,519 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:26,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-06 15:28:26,735 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,SelfDestructingSolverStorable20 [2021-11-06 15:28:26,736 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:28:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1998465290, now seen corresponding path program 2 times [2021-11-06 15:28:26,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:26,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177385118] [2021-11-06 15:28:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:26,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-11-06 15:28:27,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:27,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177385118] [2021-11-06 15:28:27,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177385118] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:27,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730107986] [2021-11-06 15:28:27,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:28:27,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:28:27,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:28:27,179 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:28:27,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 15:29:39,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 15:29:39,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:29:39,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 8653 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 15:29:39,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:29:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-11-06 15:29:39,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730107986] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:29:39,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:29:39,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 15:29:39,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406002366] [2021-11-06 15:29:39,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:29:39,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:39,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:29:39,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:29:39,729 INFO L87 Difference]: Start difference. First operand 3037 states and 4258 transitions. Second operand has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:40,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:40,366 INFO L93 Difference]: Finished difference Result 6091 states and 8571 transitions. [2021-11-06 15:29:40,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:29:40,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 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 372 [2021-11-06 15:29:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:40,370 INFO L225 Difference]: With dead ends: 6091 [2021-11-06 15:29:40,371 INFO L226 Difference]: Without dead ends: 3076 [2021-11-06 15:29:40,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:29:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2021-11-06 15:29:40,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3076. [2021-11-06 15:29:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3074 states have (on average 1.3978529603122967) internal successors, (4297), 3075 states have internal predecessors, (4297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 4297 transitions. [2021-11-06 15:29:40,482 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 4297 transitions. Word has length 372 [2021-11-06 15:29:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:40,482 INFO L470 AbstractCegarLoop]: Abstraction has 3076 states and 4297 transitions. [2021-11-06 15:29:40,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:40,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 4297 transitions. [2021-11-06 15:29:40,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-06 15:29:40,484 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:40,485 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:29:40,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-06 15:29:40,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:29:40,712 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:29:40,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:40,712 INFO L85 PathProgramCache]: Analyzing trace with hash 95033970, now seen corresponding path program 3 times [2021-11-06 15:29:40,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:40,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449915784] [2021-11-06 15:29:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:40,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2021-11-06 15:29:41,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:41,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449915784] [2021-11-06 15:29:41,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449915784] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:29:41,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323297529] [2021-11-06 15:29:41,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 15:29:41,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:29:41,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:29:41,680 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:29:41,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Killed by 15