./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.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 037e795cce503850d2c4452c45fcb076e5748c33e58ba9a275ca2db56216e774 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:03:12,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:03:12,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:03:12,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:03:12,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:03:12,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:03:12,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:03:12,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:03:12,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:03:12,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:03:12,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:03:12,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:03:12,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:03:12,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:03:12,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:03:12,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:03:12,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:03:12,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:03:12,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:03:12,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:03:12,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:03:12,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:03:12,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:03:12,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:03:12,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:03:12,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:03:12,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:03:12,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:03:12,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:03:12,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:03:12,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:03:12,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:03:12,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:03:12,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:03:12,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:03:12,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:03:12,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:03:12,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:03:12,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:03:12,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:03:12,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:03:12,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:03:12,884 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:03:12,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:03:12,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:03:12,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:03:12,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:03:12,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:03:12,887 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:03:12,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:03:12,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:03:12,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:03:12,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:03:12,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:03:12,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:03:12,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:03:12,889 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:03:12,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:03:12,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:03:12,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:03:12,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:03:12,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:03:12,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:03:12,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:03:12,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:03:12,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:03:12,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:03:12,892 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:03:12,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:03:12,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:03:12,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:03:12,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 037e795cce503850d2c4452c45fcb076e5748c33e58ba9a275ca2db56216e774 [2021-11-06 17:03:13,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:03:13,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:03:13,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:03:13,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:03:13,191 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:03:13,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-06 17:03:13,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7517029d0/0f984232c0f7469284bde80b30448ca3/FLAG02eda5a55 [2021-11-06 17:03:13,947 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:03:13,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-06 17:03:13,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7517029d0/0f984232c0f7469284bde80b30448ca3/FLAG02eda5a55 [2021-11-06 17:03:14,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7517029d0/0f984232c0f7469284bde80b30448ca3 [2021-11-06 17:03:14,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:03:14,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:03:14,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:03:14,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:03:14,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:03:14,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:03:14" (1/1) ... [2021-11-06 17:03:14,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2f7e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:14, skipping insertion in model container [2021-11-06 17:03:14,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:03:14" (1/1) ... [2021-11-06 17:03:14,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:03:14,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:03:16,045 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[261739,261752] [2021-11-06 17:03:16,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:03:16,377 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:03:16,744 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[261739,261752] [2021-11-06 17:03:16,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:03:16,864 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:03:16,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16 WrapperNode [2021-11-06 17:03:16,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:03:16,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:03:16,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:03:16,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:03:16,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16" (1/1) ... [2021-11-06 17:03:17,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16" (1/1) ... [2021-11-06 17:03:18,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:03:18,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:03:18,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:03:18,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:03:18,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16" (1/1) ... [2021-11-06 17:03:18,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16" (1/1) ... [2021-11-06 17:03:18,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16" (1/1) ... [2021-11-06 17:03:18,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16" (1/1) ... [2021-11-06 17:03:19,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16" (1/1) ... [2021-11-06 17:03:19,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16" (1/1) ... [2021-11-06 17:03:19,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16" (1/1) ... [2021-11-06 17:03:20,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:03:20,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:03:20,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:03:20,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:03:20,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16" (1/1) ... [2021-11-06 17:03:20,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:03:20,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:03:20,193 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 17:03:20,215 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 17:03:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2021-11-06 17:03:20,231 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2021-11-06 17:03:20,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:03:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:03:20,232 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2021-11-06 17:03:20,233 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2021-11-06 17:03:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2021-11-06 17:03:20,233 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2021-11-06 17:03:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:03:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 17:03:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:03:20,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:03:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:03:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2021-11-06 17:03:20,234 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2021-11-06 17:03:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:03:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:03:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:03:20,234 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2021-11-06 17:03:20,235 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2021-11-06 17:03:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:03:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2021-11-06 17:03:20,235 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2021-11-06 17:03:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:03:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:03:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 17:03:20,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 17:03:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2021-11-06 17:03:20,236 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2021-11-06 17:03:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:03:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:03:20,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:04:55,188 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:04:55,188 INFO L299 CfgBuilder]: Removed 3550 assume(true) statements. [2021-11-06 17:04:55,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:04:55 BoogieIcfgContainer [2021-11-06 17:04:55,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:04:55,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:04:55,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:04:55,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:04:55,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:03:14" (1/3) ... [2021-11-06 17:04:55,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2c5262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:04:55, skipping insertion in model container [2021-11-06 17:04:55,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:03:16" (2/3) ... [2021-11-06 17:04:55,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2c5262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:04:55, skipping insertion in model container [2021-11-06 17:04:55,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:04:55" (3/3) ... [2021-11-06 17:04:55,207 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-06 17:04:55,211 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:04:55,212 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-06 17:04:55,279 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:04:55,285 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 17:04:55,285 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-06 17:04:55,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 8951 states, 8832 states have (on average 1.5364583333333333) internal successors, (13570), 8844 states have internal predecessors, (13570), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-06 17:04:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 17:04:55,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:04:55,429 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:04:55,431 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:04:55,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:04:55,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1764696194, now seen corresponding path program 1 times [2021-11-06 17:04:55,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:04:55,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481458859] [2021-11-06 17:04:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:04:55,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:04:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:04:55,881 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 17:04:55,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:04:55,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481458859] [2021-11-06 17:04:55,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481458859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:04:55,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:04:55,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:04:55,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408466468] [2021-11-06 17:04:55,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:04:55,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:04:55,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:04:55,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:04:55,922 INFO L87 Difference]: Start difference. First operand has 8951 states, 8832 states have (on average 1.5364583333333333) internal successors, (13570), 8844 states have internal predecessors, (13570), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:04:56,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:04:56,219 INFO L93 Difference]: Finished difference Result 17898 states and 27634 transitions. [2021-11-06 17:04:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:04:56,221 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-06 17:04:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:04:56,283 INFO L225 Difference]: With dead ends: 17898 [2021-11-06 17:04:56,283 INFO L226 Difference]: Without dead ends: 8942 [2021-11-06 17:04:56,327 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 17:04:56,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8942 states. [2021-11-06 17:04:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8942 to 8942. [2021-11-06 17:04:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8942 states, 8824 states have (on average 1.5265185856754306) internal successors, (13470), 8835 states have internal predecessors, (13470), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-06 17:04:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8942 states to 8942 states and 13678 transitions. [2021-11-06 17:04:56,651 INFO L78 Accepts]: Start accepts. Automaton has 8942 states and 13678 transitions. Word has length 156 [2021-11-06 17:04:56,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:04:56,652 INFO L470 AbstractCegarLoop]: Abstraction has 8942 states and 13678 transitions. [2021-11-06 17:04:56,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:04:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 8942 states and 13678 transitions. [2021-11-06 17:04:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 17:04:56,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:04:56,660 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:04:56,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:04:56,661 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:04:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:04:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2030406542, now seen corresponding path program 1 times [2021-11-06 17:04:56,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:04:56,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762091700] [2021-11-06 17:04:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:04:56,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:04:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:04:57,213 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 17:04:57,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:04:57,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762091700] [2021-11-06 17:04:57,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762091700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:04:57,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:04:57,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:04:57,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373195784] [2021-11-06 17:04:57,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:04:57,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:04:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:04:57,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:04:57,218 INFO L87 Difference]: Start difference. First operand 8942 states and 13678 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:04:57,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:04:57,790 INFO L93 Difference]: Finished difference Result 26370 states and 40435 transitions. [2021-11-06 17:04:57,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:04:57,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-06 17:04:57,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:04:57,900 INFO L225 Difference]: With dead ends: 26370 [2021-11-06 17:04:57,901 INFO L226 Difference]: Without dead ends: 17566 [2021-11-06 17:04:57,937 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 17:04:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17566 states. [2021-11-06 17:04:58,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17566 to 17564. [2021-11-06 17:04:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17564 states, 17336 states have (on average 1.529360867558837) internal successors, (26513), 17353 states have internal predecessors, (26513), 206 states have call successors, (206), 16 states have call predecessors, (206), 16 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-06 17:04:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17564 states to 17564 states and 26925 transitions. [2021-11-06 17:04:58,415 INFO L78 Accepts]: Start accepts. Automaton has 17564 states and 26925 transitions. Word has length 156 [2021-11-06 17:04:58,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:04:58,418 INFO L470 AbstractCegarLoop]: Abstraction has 17564 states and 26925 transitions. [2021-11-06 17:04:58,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:04:58,419 INFO L276 IsEmpty]: Start isEmpty. Operand 17564 states and 26925 transitions. [2021-11-06 17:04:58,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-06 17:04:58,423 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:04:58,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:04:58,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:04:58,424 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:04:58,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:04:58,424 INFO L85 PathProgramCache]: Analyzing trace with hash 961711886, now seen corresponding path program 1 times [2021-11-06 17:04:58,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:04:58,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186129401] [2021-11-06 17:04:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:04:58,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:04:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:04:58,667 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 17:04:58,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:04:58,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186129401] [2021-11-06 17:04:58,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186129401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:04:58,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:04:58,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:04:58,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992601156] [2021-11-06 17:04:58,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:04:58,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:04:58,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:04:58,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:04:58,671 INFO L87 Difference]: Start difference. First operand 17564 states and 26925 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 17:04:58,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:04:58,979 INFO L93 Difference]: Finished difference Result 34992 states and 53681 transitions. [2021-11-06 17:04:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:04:58,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2021-11-06 17:04:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:04:59,041 INFO L225 Difference]: With dead ends: 34992 [2021-11-06 17:04:59,042 INFO L226 Difference]: Without dead ends: 17566 [2021-11-06 17:04:59,087 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 17:04:59,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17566 states. [2021-11-06 17:04:59,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17566 to 17565. [2021-11-06 17:04:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17565 states, 17337 states have (on average 1.5293303339678146) internal successors, (26514), 17354 states have internal predecessors, (26514), 206 states have call successors, (206), 16 states have call predecessors, (206), 16 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-06 17:04:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17565 states to 17565 states and 26926 transitions. [2021-11-06 17:04:59,488 INFO L78 Accepts]: Start accepts. Automaton has 17565 states and 26926 transitions. Word has length 163 [2021-11-06 17:04:59,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:04:59,489 INFO L470 AbstractCegarLoop]: Abstraction has 17565 states and 26926 transitions. [2021-11-06 17:04:59,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 17:04:59,490 INFO L276 IsEmpty]: Start isEmpty. Operand 17565 states and 26926 transitions. [2021-11-06 17:04:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 17:04:59,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:04:59,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:04:59,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:04:59,495 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:04:59,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:04:59,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1536512142, now seen corresponding path program 1 times [2021-11-06 17:04:59,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:04:59,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251860932] [2021-11-06 17:04:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:04:59,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:04:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:04:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:04:59,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:04:59,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251860932] [2021-11-06 17:04:59,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251860932] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:04:59,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057877445] [2021-11-06 17:04:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:04:59,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:04:59,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:04:59,732 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 17:04:59,733 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 17:05:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:05:00,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 2644 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 17:05:00,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:05:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 17:05:01,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057877445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:05:01,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:05:01,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 17:05:01,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11371390] [2021-11-06 17:05:01,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:05:01,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:05:01,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:05:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:05:01,736 INFO L87 Difference]: Start difference. First operand 17565 states and 26926 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 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 17:05:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:05:01,916 INFO L93 Difference]: Finished difference Result 17565 states and 26926 transitions. [2021-11-06 17:05:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:05:01,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 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 17:05:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:05:01,977 INFO L225 Difference]: With dead ends: 17565 [2021-11-06 17:05:01,977 INFO L226 Difference]: Without dead ends: 17563 [2021-11-06 17:05:01,989 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:05:02,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17563 states. [2021-11-06 17:05:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17563 to 17563. [2021-11-06 17:05:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17563 states, 17336 states have (on average 1.5293031841255191) internal successors, (26512), 17352 states have internal predecessors, (26512), 206 states have call successors, (206), 16 states have call predecessors, (206), 16 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-06 17:05:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17563 states to 17563 states and 26924 transitions. [2021-11-06 17:05:02,377 INFO L78 Accepts]: Start accepts. Automaton has 17563 states and 26924 transitions. Word has length 165 [2021-11-06 17:05:02,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:05:02,377 INFO L470 AbstractCegarLoop]: Abstraction has 17563 states and 26924 transitions. [2021-11-06 17:05:02,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 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 17:05:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 17563 states and 26924 transitions. [2021-11-06 17:05:02,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 17:05:02,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:05:02,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:05:02,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 17:05:02,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:05:02,600 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:05:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:05:02,600 INFO L85 PathProgramCache]: Analyzing trace with hash -387196609, now seen corresponding path program 1 times [2021-11-06 17:05:02,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:05:02,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673163389] [2021-11-06 17:05:02,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:05:02,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:05:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:05:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:05:03,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:05:03,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673163389] [2021-11-06 17:05:03,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673163389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:05:03,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354134033] [2021-11-06 17:05:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:05:03,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:05:03,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:05:03,093 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 17:05:03,094 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 17:05:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:05:04,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2646 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 17:05:04,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:05:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 17:05:05,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354134033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:05:05,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:05:05,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 17:05:05,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170614137] [2021-11-06 17:05:05,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:05:05,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:05:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:05:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:05:05,079 INFO L87 Difference]: Start difference. First operand 17563 states and 26924 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 17:05:05,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:05:05,322 INFO L93 Difference]: Finished difference Result 17563 states and 26924 transitions. [2021-11-06 17:05:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:05:05,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-06 17:05:05,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:05:05,532 INFO L225 Difference]: With dead ends: 17563 [2021-11-06 17:05:05,532 INFO L226 Difference]: Without dead ends: 17561 [2021-11-06 17:05:05,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:05:05,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17561 states. [2021-11-06 17:05:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17561 to 17561. [2021-11-06 17:05:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17561 states, 17335 states have (on average 1.5292760311508509) internal successors, (26510), 17350 states have internal predecessors, (26510), 206 states have call successors, (206), 16 states have call predecessors, (206), 16 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-06 17:05:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17561 states to 17561 states and 26922 transitions. [2021-11-06 17:05:05,933 INFO L78 Accepts]: Start accepts. Automaton has 17561 states and 26922 transitions. Word has length 166 [2021-11-06 17:05:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:05:05,934 INFO L470 AbstractCegarLoop]: Abstraction has 17561 states and 26922 transitions. [2021-11-06 17:05:05,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 17:05:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 17561 states and 26922 transitions. [2021-11-06 17:05:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 17:05:05,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:05:05,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:05:05,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 17:05:06,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:05:06,156 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:05:06,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:05:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash 881846556, now seen corresponding path program 1 times [2021-11-06 17:05:06,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:05:06,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816515777] [2021-11-06 17:05:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:05:06,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:05:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:05:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:05:06,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:05:06,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816515777] [2021-11-06 17:05:06,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816515777] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:05:06,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439397267] [2021-11-06 17:05:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:05:06,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:05:06,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:05:06,357 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 17:05:06,359 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 17:05:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:05:07,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 2648 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 17:05:07,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:05:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 17:05:08,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439397267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:05:08,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:05:08,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 17:05:08,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687450792] [2021-11-06 17:05:08,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:05:08,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:05:08,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:05:08,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:05:08,159 INFO L87 Difference]: Start difference. First operand 17561 states and 26922 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 17:05:08,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:05:08,508 INFO L93 Difference]: Finished difference Result 34976 states and 53665 transitions. [2021-11-06 17:05:08,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:05:08,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2021-11-06 17:05:08,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:05:08,566 INFO L225 Difference]: With dead ends: 34976 [2021-11-06 17:05:08,567 INFO L226 Difference]: Without dead ends: 17553 [2021-11-06 17:05:08,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:05:08,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17553 states. [2021-11-06 17:05:08,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17553 to 17551. [2021-11-06 17:05:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17551 states, 17326 states have (on average 1.5293778136904075) internal successors, (26498), 17340 states have internal predecessors, (26498), 206 states have call successors, (206), 16 states have call predecessors, (206), 16 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-06 17:05:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17551 states to 17551 states and 26910 transitions. [2021-11-06 17:05:09,213 INFO L78 Accepts]: Start accepts. Automaton has 17551 states and 26910 transitions. Word has length 167 [2021-11-06 17:05:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:05:09,213 INFO L470 AbstractCegarLoop]: Abstraction has 17551 states and 26910 transitions. [2021-11-06 17:05:09,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 17:05:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 17551 states and 26910 transitions. [2021-11-06 17:05:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-06 17:05:09,218 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:05:09,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:05:09,253 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 17:05:09,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:05:09,444 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:05:09,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:05:09,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1567479017, now seen corresponding path program 1 times [2021-11-06 17:05:09,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:05:09,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929463563] [2021-11-06 17:05:09,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:05:09,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:05:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:05:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:05:09,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:05:09,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929463563] [2021-11-06 17:05:09,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929463563] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:05:09,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961248456] [2021-11-06 17:05:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:05:09,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:05:09,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:05:09,647 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 17:05:09,648 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 17:05:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:05:10,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 17:05:10,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:05:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 17:05:11,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961248456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:05:11,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:05:11,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 17:05:11,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027843954] [2021-11-06 17:05:11,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:05:11,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:05:11,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:05:11,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:05:11,404 INFO L87 Difference]: Start difference. First operand 17551 states and 26910 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 17:05:11,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:05:11,773 INFO L93 Difference]: Finished difference Result 17551 states and 26910 transitions. [2021-11-06 17:05:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:05:11,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2021-11-06 17:05:11,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:05:11,819 INFO L225 Difference]: With dead ends: 17551 [2021-11-06 17:05:11,820 INFO L226 Difference]: Without dead ends: 17549 [2021-11-06 17:05:11,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:05:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17549 states. [2021-11-06 17:05:12,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17549 to 17549. [2021-11-06 17:05:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17549 states, 17325 states have (on average 1.5293506493506495) internal successors, (26496), 17338 states have internal predecessors, (26496), 206 states have call successors, (206), 16 states have call predecessors, (206), 16 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-06 17:05:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17549 states to 17549 states and 26908 transitions. [2021-11-06 17:05:12,236 INFO L78 Accepts]: Start accepts. Automaton has 17549 states and 26908 transitions. Word has length 168 [2021-11-06 17:05:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:05:12,237 INFO L470 AbstractCegarLoop]: Abstraction has 17549 states and 26908 transitions. [2021-11-06 17:05:12,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 17:05:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 17549 states and 26908 transitions. [2021-11-06 17:05:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-06 17:05:12,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:05:12,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:05:12,277 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 17:05:12,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:05:12,460 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:05:12,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:05:12,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1347248838, now seen corresponding path program 1 times [2021-11-06 17:05:12,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:05:12,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630739059] [2021-11-06 17:05:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:05:12,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:05:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:05:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:05:12,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:05:12,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630739059] [2021-11-06 17:05:12,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630739059] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:05:12,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790569204] [2021-11-06 17:05:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:05:12,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:05:12,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:05:12,681 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 17:05:12,682 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 17:05:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:05:13,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 2652 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 17:05:13,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:05:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 17:05:14,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790569204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:05:14,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:05:14,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 17:05:14,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044488961] [2021-11-06 17:05:14,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:05:14,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:05:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:05:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:05:14,478 INFO L87 Difference]: Start difference. First operand 17549 states and 26908 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 17:05:14,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:05:14,685 INFO L93 Difference]: Finished difference Result 17549 states and 26908 transitions. [2021-11-06 17:05:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:05:14,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2021-11-06 17:05:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:05:14,736 INFO L225 Difference]: With dead ends: 17549 [2021-11-06 17:05:14,736 INFO L226 Difference]: Without dead ends: 17426 [2021-11-06 17:05:14,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:05:14,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17426 states. [2021-11-06 17:05:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17426 to 17426. [2021-11-06 17:05:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17426 states, 17205 states have (on average 1.5294391165358907) internal successors, (26314), 17217 states have internal predecessors, (26314), 204 states have call successors, (204), 16 states have call predecessors, (204), 16 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) [2021-11-06 17:05:15,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17426 states to 17426 states and 26722 transitions. [2021-11-06 17:05:15,261 INFO L78 Accepts]: Start accepts. Automaton has 17426 states and 26722 transitions. Word has length 169 [2021-11-06 17:05:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:05:15,262 INFO L470 AbstractCegarLoop]: Abstraction has 17426 states and 26722 transitions. [2021-11-06 17:05:15,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 17:05:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 17426 states and 26722 transitions. [2021-11-06 17:05:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-06 17:05:15,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:05:15,289 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:15,324 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 17:05:15,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:05:15,512 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:05:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:05:15,512 INFO L85 PathProgramCache]: Analyzing trace with hash 987383539, now seen corresponding path program 1 times [2021-11-06 17:05:15,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:05:15,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124592488] [2021-11-06 17:05:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:05:15,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:05:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:05:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-06 17:05:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:05:15,756 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 17:05:15,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:05:15,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124592488] [2021-11-06 17:05:15,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124592488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:05:15,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:05:15,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:05:15,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436563280] [2021-11-06 17:05:15,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:05:15,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:05:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:05:15,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:05:15,759 INFO L87 Difference]: Start difference. First operand 17426 states and 26722 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:06:41,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:06:41,845 INFO L93 Difference]: Finished difference Result 42019 states and 64686 transitions. [2021-11-06 17:06:41,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:06:41,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 196 [2021-11-06 17:06:41,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:06:41,947 INFO L225 Difference]: With dead ends: 42019 [2021-11-06 17:06:41,947 INFO L226 Difference]: Without dead ends: 24731 [2021-11-06 17:06:41,995 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 17:06:42,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24731 states. [2021-11-06 17:06:42,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24731 to 24619. [2021-11-06 17:06:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24619 states, 24272 states have (on average 1.529251812788398) internal successors, (37118), 24288 states have internal predecessors, (37118), 316 states have call successors, (316), 30 states have call predecessors, (316), 30 states have return successors, (316), 310 states have call predecessors, (316), 316 states have call successors, (316) [2021-11-06 17:06:42,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24619 states to 24619 states and 37750 transitions. [2021-11-06 17:06:42,745 INFO L78 Accepts]: Start accepts. Automaton has 24619 states and 37750 transitions. Word has length 196 [2021-11-06 17:06:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:06:42,746 INFO L470 AbstractCegarLoop]: Abstraction has 24619 states and 37750 transitions. [2021-11-06 17:06:42,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:06:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 24619 states and 37750 transitions. [2021-11-06 17:06:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-06 17:06:42,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:06:42,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:06:42,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 17:06:42,801 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:06:42,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:06:42,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1775348393, now seen corresponding path program 1 times [2021-11-06 17:06:42,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:06:42,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563278491] [2021-11-06 17:06:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:06:42,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:06:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:06:43,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-06 17:06:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:06:43,080 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 17:06:43,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:06:43,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563278491] [2021-11-06 17:06:43,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563278491] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:06:43,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318563667] [2021-11-06 17:06:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:06:43,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:06:43,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:06:43,091 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 17:06:43,092 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 17:06:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:06:44,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:06:44,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:06:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:06:45,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318563667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:06:45,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:06:45,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-06 17:06:45,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140706029] [2021-11-06 17:06:45,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:06:45,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:06:45,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:06:45,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:06:45,019 INFO L87 Difference]: Start difference. First operand 24619 states and 37750 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:06:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:06:46,485 INFO L93 Difference]: Finished difference Result 49324 states and 75776 transitions. [2021-11-06 17:06:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:06:46,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-11-06 17:06:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:06:46,561 INFO L225 Difference]: With dead ends: 49324 [2021-11-06 17:06:46,561 INFO L226 Difference]: Without dead ends: 24843 [2021-11-06 17:06:46,627 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:06:46,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24843 states. [2021-11-06 17:06:47,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24843 to 24843. [2021-11-06 17:06:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24843 states, 24496 states have (on average 1.524412148922273) internal successors, (37342), 24512 states have internal predecessors, (37342), 316 states have call successors, (316), 30 states have call predecessors, (316), 30 states have return successors, (316), 310 states have call predecessors, (316), 316 states have call successors, (316) [2021-11-06 17:06:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24843 states to 24843 states and 37974 transitions. [2021-11-06 17:06:47,282 INFO L78 Accepts]: Start accepts. Automaton has 24843 states and 37974 transitions. Word has length 229 [2021-11-06 17:06:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:06:47,283 INFO L470 AbstractCegarLoop]: Abstraction has 24843 states and 37974 transitions. [2021-11-06 17:06:47,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:06:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24843 states and 37974 transitions. [2021-11-06 17:06:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-06 17:06:47,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:06:47,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:06:47,360 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 17:06:47,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:06:47,540 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:06:47,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:06:47,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1797980647, now seen corresponding path program 1 times [2021-11-06 17:06:47,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:06:47,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112077909] [2021-11-06 17:06:47,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:06:47,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:06:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:06:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-06 17:06:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:06:47,779 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 17:06:47,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:06:47,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112077909] [2021-11-06 17:06:47,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112077909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:06:47,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124491632] [2021-11-06 17:06:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:06:47,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:06:47,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:06:47,782 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 17:06:47,783 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 17:06:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:06:49,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:06:49,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:06:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:06:49,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124491632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:06:49,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:06:49,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-06 17:06:49,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967414272] [2021-11-06 17:06:49,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:06:49,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:06:49,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:06:49,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:06:49,557 INFO L87 Difference]: Start difference. First operand 24843 states and 37974 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:06:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:06:49,936 INFO L93 Difference]: Finished difference Result 49552 states and 76058 transitions. [2021-11-06 17:06:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:06:49,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-11-06 17:06:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:06:50,020 INFO L225 Difference]: With dead ends: 49552 [2021-11-06 17:06:50,020 INFO L226 Difference]: Without dead ends: 24847 [2021-11-06 17:06:50,095 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:06:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24847 states. [2021-11-06 17:06:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24847 to 24847. [2021-11-06 17:06:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24847 states, 24500 states have (on average 1.5243265306122449) internal successors, (37346), 24516 states have internal predecessors, (37346), 316 states have call successors, (316), 30 states have call predecessors, (316), 30 states have return successors, (316), 310 states have call predecessors, (316), 316 states have call successors, (316) [2021-11-06 17:06:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24847 states to 24847 states and 37978 transitions. [2021-11-06 17:06:50,721 INFO L78 Accepts]: Start accepts. Automaton has 24847 states and 37978 transitions. Word has length 229 [2021-11-06 17:06:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:06:50,721 INFO L470 AbstractCegarLoop]: Abstraction has 24847 states and 37978 transitions. [2021-11-06 17:06:50,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:06:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 24847 states and 37978 transitions. [2021-11-06 17:06:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-06 17:06:50,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:06:50,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:06:50,799 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 17:06:50,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:06:50,988 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:06:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:06:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash 109036905, now seen corresponding path program 1 times [2021-11-06 17:06:50,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:06:50,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573786727] [2021-11-06 17:06:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:06:50,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:06:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:06:51,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-06 17:06:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:06:51,225 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 17:06:51,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:06:51,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573786727] [2021-11-06 17:06:51,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573786727] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:06:51,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050391121] [2021-11-06 17:06:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:06:51,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:06:51,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:06:51,228 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 17:06:51,229 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 17:06:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:06:52,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 3137 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 17:06:52,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:06:53,068 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 17:06:53,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050391121] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:06:53,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 17:06:53,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-11-06 17:06:53,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197341976] [2021-11-06 17:06:53,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:06:53,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:06:53,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:06:53,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:06:53,070 INFO L87 Difference]: Start difference. First operand 24847 states and 37978 transitions. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 5 states have internal predecessors, (240), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 17:08:04,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:08:04,110 INFO L93 Difference]: Finished difference Result 49674 states and 76176 transitions. [2021-11-06 17:08:04,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:08:04,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 5 states have internal predecessors, (240), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 229 [2021-11-06 17:08:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:08:04,189 INFO L225 Difference]: With dead ends: 49674 [2021-11-06 17:08:04,189 INFO L226 Difference]: Without dead ends: 24965 [2021-11-06 17:08:04,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:08:04,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24965 states. [2021-11-06 17:08:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24965 to 24851. [2021-11-06 17:08:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24851 states, 24504 states have (on average 1.5242409402546524) internal successors, (37350), 24520 states have internal predecessors, (37350), 316 states have call successors, (316), 30 states have call predecessors, (316), 30 states have return successors, (316), 310 states have call predecessors, (316), 316 states have call successors, (316) [2021-11-06 17:08:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24851 states to 24851 states and 37982 transitions. [2021-11-06 17:08:04,922 INFO L78 Accepts]: Start accepts. Automaton has 24851 states and 37982 transitions. Word has length 229 [2021-11-06 17:08:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:08:04,923 INFO L470 AbstractCegarLoop]: Abstraction has 24851 states and 37982 transitions. [2021-11-06 17:08:04,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 5 states have internal predecessors, (240), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 17:08:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 24851 states and 37982 transitions. [2021-11-06 17:08:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-06 17:08:04,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:08:04,954 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-11-06 17:08:04,982 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 17:08:05,159 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,SelfDestructingSolverStorable11 [2021-11-06 17:08:05,160 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:08:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:08:05,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1386495181, now seen corresponding path program 2 times [2021-11-06 17:08:05,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:08:05,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479164515] [2021-11-06 17:08:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:08:05,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:08:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:08:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-06 17:08:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:08:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 17:08:05,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:08:05,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479164515] [2021-11-06 17:08:05,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479164515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:08:05,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:08:05,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:08:05,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023417458] [2021-11-06 17:08:05,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:08:05,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:08:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:08:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:08:05,480 INFO L87 Difference]: Start difference. First operand 24851 states and 37982 transitions. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 5 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:09:22,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:09:22,898 INFO L93 Difference]: Finished difference Result 50200 states and 77290 transitions. [2021-11-06 17:09:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 17:09:22,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 5 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2021-11-06 17:09:22,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:09:22,957 INFO L225 Difference]: With dead ends: 50200 [2021-11-06 17:09:22,957 INFO L226 Difference]: Without dead ends: 25487 [2021-11-06 17:09:23,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-06 17:09:23,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25487 states. [2021-11-06 17:09:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25487 to 24863. [2021-11-06 17:09:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24863 states, 24516 states have (on average 1.523984336759667) internal successors, (37362), 24532 states have internal predecessors, (37362), 316 states have call successors, (316), 30 states have call predecessors, (316), 30 states have return successors, (316), 310 states have call predecessors, (316), 316 states have call successors, (316) [2021-11-06 17:09:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24863 states to 24863 states and 37994 transitions. [2021-11-06 17:09:23,515 INFO L78 Accepts]: Start accepts. Automaton has 24863 states and 37994 transitions. Word has length 231 [2021-11-06 17:09:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:09:23,516 INFO L470 AbstractCegarLoop]: Abstraction has 24863 states and 37994 transitions. [2021-11-06 17:09:23,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 5 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:09:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 24863 states and 37994 transitions. [2021-11-06 17:09:23,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-06 17:09:23,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:09:23,546 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-11-06 17:09:23,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 17:09:23,547 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:09:23,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:09:23,547 INFO L85 PathProgramCache]: Analyzing trace with hash 106631503, now seen corresponding path program 1 times [2021-11-06 17:09:23,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:09:23,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660843774] [2021-11-06 17:09:23,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:09:23,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:09:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:09:23,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-06 17:09:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:09:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 17:09:23,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:09:23,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660843774] [2021-11-06 17:09:23,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660843774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:09:23,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:09:23,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:09:23,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625246233] [2021-11-06 17:09:23,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:09:23,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:09:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:09:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:09:23,798 INFO L87 Difference]: Start difference. First operand 24863 states and 37994 transitions. Second operand has 5 states, 5 states have (on average 45.2) internal successors, (226), 4 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:11:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:11:04,001 INFO L93 Difference]: Finished difference Result 70751 states and 108662 transitions. [2021-11-06 17:11:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:11:04,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.2) internal successors, (226), 4 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2021-11-06 17:11:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:11:04,092 INFO L225 Difference]: With dead ends: 70751 [2021-11-06 17:11:04,092 INFO L226 Difference]: Without dead ends: 46026 [2021-11-06 17:11:04,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:11:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46026 states. [2021-11-06 17:11:04,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46026 to 25025. [2021-11-06 17:11:04,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25025 states, 24676 states have (on average 1.523909871940347) internal successors, (37604), 24692 states have internal predecessors, (37604), 318 states have call successors, (318), 30 states have call predecessors, (318), 30 states have return successors, (318), 312 states have call predecessors, (318), 318 states have call successors, (318) [2021-11-06 17:11:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25025 states to 25025 states and 38240 transitions. [2021-11-06 17:11:04,788 INFO L78 Accepts]: Start accepts. Automaton has 25025 states and 38240 transitions. Word has length 231 [2021-11-06 17:11:04,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:11:04,789 INFO L470 AbstractCegarLoop]: Abstraction has 25025 states and 38240 transitions. [2021-11-06 17:11:04,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.2) internal successors, (226), 4 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:11:04,789 INFO L276 IsEmpty]: Start isEmpty. Operand 25025 states and 38240 transitions. [2021-11-06 17:11:04,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-06 17:11:04,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:11:04,816 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-11-06 17:11:04,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 17:11:04,816 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:11:04,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:11:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash -27382003, now seen corresponding path program 1 times [2021-11-06 17:11:04,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:11:04,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067434547] [2021-11-06 17:11:04,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:11:04,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:11:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:11:05,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-06 17:11:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:11:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:11:05,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:11:05,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067434547] [2021-11-06 17:11:05,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067434547] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:11:05,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566096682] [2021-11-06 17:11:05,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:11:05,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:11:05,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:11:05,195 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 17:11:05,196 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 17:11:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:11:07,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 3147 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 17:11:07,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:11:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:11:07,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566096682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:11:07,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 17:11:07,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-11-06 17:11:07,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942839046] [2021-11-06 17:11:07,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 17:11:07,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:11:07,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 17:11:07,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 17:11:07,516 INFO L87 Difference]: Start difference. First operand 25025 states and 38240 transitions. Second operand has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 6 states have internal predecessors, (242), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 17:12:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:12:30,717 INFO L93 Difference]: Finished difference Result 50030 states and 76702 transitions. [2021-11-06 17:12:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 17:12:30,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 6 states have internal predecessors, (242), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2021-11-06 17:12:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:12:30,780 INFO L225 Difference]: With dead ends: 50030 [2021-11-06 17:12:30,781 INFO L226 Difference]: Without dead ends: 25143 [2021-11-06 17:12:30,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 17:12:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25143 states. [2021-11-06 17:12:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25143 to 25029. [2021-11-06 17:12:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25029 states, 24680 states have (on average 1.5238249594813613) internal successors, (37608), 24696 states have internal predecessors, (37608), 318 states have call successors, (318), 30 states have call predecessors, (318), 30 states have return successors, (318), 312 states have call predecessors, (318), 318 states have call successors, (318) [2021-11-06 17:12:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25029 states to 25029 states and 38244 transitions. [2021-11-06 17:12:31,409 INFO L78 Accepts]: Start accepts. Automaton has 25029 states and 38244 transitions. Word has length 231 [2021-11-06 17:12:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:12:31,409 INFO L470 AbstractCegarLoop]: Abstraction has 25029 states and 38244 transitions. [2021-11-06 17:12:31,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 6 states have internal predecessors, (242), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 17:12:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 25029 states and 38244 transitions. [2021-11-06 17:12:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-06 17:12:31,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:12:31,437 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 17:12:31,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 17:12:31,637 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,SelfDestructingSolverStorable14 [2021-11-06 17:12:31,638 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:12:31,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:12:31,639 INFO L85 PathProgramCache]: Analyzing trace with hash -750625423, now seen corresponding path program 2 times [2021-11-06 17:12:31,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:12:31,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820987457] [2021-11-06 17:12:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:12:31,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:12:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:12:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-06 17:12:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:12:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:12:31,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:12:31,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820987457] [2021-11-06 17:12:31,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820987457] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:12:31,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125315121] [2021-11-06 17:12:31,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 17:12:31,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:12:31,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:12:31,933 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 17:12:31,937 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 17:12:35,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 17:12:35,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 17:12:35,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 17:12:35,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:12:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 17:12:35,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125315121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:12:35,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:12:35,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-06 17:12:35,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493099523] [2021-11-06 17:12:35,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:12:35,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:12:35,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:12:35,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:12:35,844 INFO L87 Difference]: Start difference. First operand 25029 states and 38244 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:12:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:12:36,746 INFO L93 Difference]: Finished difference Result 50051 states and 76511 transitions. [2021-11-06 17:12:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:12:36,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 233 [2021-11-06 17:12:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:12:36,800 INFO L225 Difference]: With dead ends: 50051 [2021-11-06 17:12:36,800 INFO L226 Difference]: Without dead ends: 25061 [2021-11-06 17:12:36,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:12:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25061 states. [2021-11-06 17:12:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25061 to 25061. [2021-11-06 17:12:37,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25061 states, 24712 states have (on average 1.5231466494011008) internal successors, (37640), 24728 states have internal predecessors, (37640), 318 states have call successors, (318), 30 states have call predecessors, (318), 30 states have return successors, (318), 312 states have call predecessors, (318), 318 states have call successors, (318) [2021-11-06 17:12:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25061 states to 25061 states and 38276 transitions. [2021-11-06 17:12:37,397 INFO L78 Accepts]: Start accepts. Automaton has 25061 states and 38276 transitions. Word has length 233 [2021-11-06 17:12:37,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:12:37,398 INFO L470 AbstractCegarLoop]: Abstraction has 25061 states and 38276 transitions. [2021-11-06 17:12:37,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:12:37,398 INFO L276 IsEmpty]: Start isEmpty. Operand 25061 states and 38276 transitions. [2021-11-06 17:12:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-06 17:12:37,422 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:12:37,423 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:12:37,453 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 17:12:37,623 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,SelfDestructingSolverStorable15 [2021-11-06 17:12:37,624 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:12:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:12:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1073205137, now seen corresponding path program 1 times [2021-11-06 17:12:37,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:12:37,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027408927] [2021-11-06 17:12:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:12:37,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:12:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:12:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-11-06 17:12:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:12:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-06 17:12:38,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:12:38,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027408927] [2021-11-06 17:12:38,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027408927] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:12:38,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382335996] [2021-11-06 17:12:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:12:38,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:12:38,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:12:38,122 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 17:12:38,123 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 17:12:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:12:39,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 3345 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 17:12:39,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:12:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-06 17:12:40,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382335996] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:12:40,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 17:12:40,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-11-06 17:12:40,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144873226] [2021-11-06 17:12:40,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 17:12:40,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:12:40,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 17:12:40,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:12:40,275 INFO L87 Difference]: Start difference. First operand 25061 states and 38276 transitions. Second operand has 8 states, 8 states have (on average 34.5) internal successors, (276), 7 states have internal predecessors, (276), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 17:14:04,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:14:04,506 INFO L93 Difference]: Finished difference Result 50070 states and 76742 transitions. [2021-11-06 17:14:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 17:14:04,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 34.5) internal successors, (276), 7 states have internal predecessors, (276), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 265 [2021-11-06 17:14:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:14:04,561 INFO L225 Difference]: With dead ends: 50070 [2021-11-06 17:14:04,561 INFO L226 Difference]: Without dead ends: 25179 [2021-11-06 17:14:04,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:14:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25179 states. [2021-11-06 17:14:05,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25179 to 25065. [2021-11-06 17:14:05,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25065 states, 24716 states have (on average 1.5230619841398285) internal successors, (37644), 24732 states have internal predecessors, (37644), 318 states have call successors, (318), 30 states have call predecessors, (318), 30 states have return successors, (318), 312 states have call predecessors, (318), 318 states have call successors, (318) [2021-11-06 17:14:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25065 states to 25065 states and 38280 transitions. [2021-11-06 17:14:05,202 INFO L78 Accepts]: Start accepts. Automaton has 25065 states and 38280 transitions. Word has length 265 [2021-11-06 17:14:05,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:14:05,202 INFO L470 AbstractCegarLoop]: Abstraction has 25065 states and 38280 transitions. [2021-11-06 17:14:05,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.5) internal successors, (276), 7 states have internal predecessors, (276), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 17:14:05,203 INFO L276 IsEmpty]: Start isEmpty. Operand 25065 states and 38280 transitions. [2021-11-06 17:14:05,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-06 17:14:05,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:14:05,231 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:14:05,260 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 17:14:05,432 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,SelfDestructingSolverStorable16 [2021-11-06 17:14:05,433 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:14:05,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:14:05,433 INFO L85 PathProgramCache]: Analyzing trace with hash 351661301, now seen corresponding path program 2 times [2021-11-06 17:14:05,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:14:05,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564942867] [2021-11-06 17:14:05,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:14:05,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:14:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:14:05,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-06 17:14:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:14:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-06 17:14:05,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:14:05,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564942867] [2021-11-06 17:14:05,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564942867] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:14:05,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241669209] [2021-11-06 17:14:05,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 17:14:05,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:14:05,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:14:05,826 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 17:14:05,827 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 17:14:13,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 17:14:13,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 17:14:13,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 17:14:13,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:14:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-06 17:14:14,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241669209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:14:14,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:14:14,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-06 17:14:14,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382327926] [2021-11-06 17:14:14,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:14:14,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:14:14,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:14:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:14:14,451 INFO L87 Difference]: Start difference. First operand 25065 states and 38280 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:14:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:14:15,384 INFO L93 Difference]: Finished difference Result 50096 states and 76527 transitions. [2021-11-06 17:14:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:14:15,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 267 [2021-11-06 17:14:15,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:14:15,439 INFO L225 Difference]: With dead ends: 50096 [2021-11-06 17:14:15,439 INFO L226 Difference]: Without dead ends: 25067 [2021-11-06 17:14:15,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:14:15,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25067 states. [2021-11-06 17:14:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25067 to 25067. [2021-11-06 17:14:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25067 states, 24718 states have (on average 1.523019661784934) internal successors, (37646), 24734 states have internal predecessors, (37646), 318 states have call successors, (318), 30 states have call predecessors, (318), 30 states have return successors, (318), 312 states have call predecessors, (318), 318 states have call successors, (318) [2021-11-06 17:14:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25067 states to 25067 states and 38282 transitions. [2021-11-06 17:14:16,089 INFO L78 Accepts]: Start accepts. Automaton has 25067 states and 38282 transitions. Word has length 267 [2021-11-06 17:14:16,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:14:16,089 INFO L470 AbstractCegarLoop]: Abstraction has 25067 states and 38282 transitions. [2021-11-06 17:14:16,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:14:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 25067 states and 38282 transitions. [2021-11-06 17:14:16,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-06 17:14:16,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:14:16,115 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:14:16,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-06 17:14:16,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 17:14:16,317 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:14:16,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:14:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash -685435693, now seen corresponding path program 1 times [2021-11-06 17:14:16,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:14:16,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287086665] [2021-11-06 17:14:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:14:16,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:14:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:14:16,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-11-06 17:14:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:14:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 17:14:16,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:14:16,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287086665] [2021-11-06 17:14:16,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287086665] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:14:16,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296319207] [2021-11-06 17:14:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:14:16,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:14:16,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:14:16,712 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 17:14:16,714 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 17:14:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:14:18,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 17:14:18,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:14:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 17:14:18,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296319207] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:14:18,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 17:14:18,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-11-06 17:14:18,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032410329] [2021-11-06 17:14:18,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 17:14:18,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:14:18,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 17:14:18,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:14:18,943 INFO L87 Difference]: Start difference. First operand 25067 states and 38282 transitions. Second operand has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 8 states have internal predecessors, (280), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 17:15:30,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:15:30,933 INFO L93 Difference]: Finished difference Result 50080 states and 76752 transitions. [2021-11-06 17:15:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 17:15:30,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 8 states have internal predecessors, (280), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 269 [2021-11-06 17:15:30,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:15:30,989 INFO L225 Difference]: With dead ends: 50080 [2021-11-06 17:15:30,989 INFO L226 Difference]: Without dead ends: 25185 [2021-11-06 17:15:31,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:15:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25185 states. [2021-11-06 17:15:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25185 to 25071. [2021-11-06 17:15:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25071 states, 24722 states have (on average 1.5229350376183157) internal successors, (37650), 24738 states have internal predecessors, (37650), 318 states have call successors, (318), 30 states have call predecessors, (318), 30 states have return successors, (318), 312 states have call predecessors, (318), 318 states have call successors, (318) [2021-11-06 17:15:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25071 states to 25071 states and 38286 transitions. [2021-11-06 17:15:31,573 INFO L78 Accepts]: Start accepts. Automaton has 25071 states and 38286 transitions. Word has length 269 [2021-11-06 17:15:31,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:15:31,574 INFO L470 AbstractCegarLoop]: Abstraction has 25071 states and 38286 transitions. [2021-11-06 17:15:31,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 31.11111111111111) internal successors, (280), 8 states have internal predecessors, (280), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 17:15:31,574 INFO L276 IsEmpty]: Start isEmpty. Operand 25071 states and 38286 transitions. [2021-11-06 17:15:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-06 17:15:31,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:15:31,601 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-11-06 17:15:31,628 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 17:15:31,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:15:31,802 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 17:15:31,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:15:31,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1780029001, now seen corresponding path program 2 times [2021-11-06 17:15:31,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:15:31,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624271853] [2021-11-06 17:15:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:15:31,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:15:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:15:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-06 17:15:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:15:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 17:15:32,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:15:32,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624271853] [2021-11-06 17:15:32,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624271853] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:15:32,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101166137] [2021-11-06 17:15:32,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 17:15:32,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:15:32,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:15:32,351 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 17:15:32,352 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 17:15:38,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 17:15:38,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 17:15:38,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 3369 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 17:15:38,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:15:39,203 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 17:15:39,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101166137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:15:39,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 17:15:39,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-11-06 17:15:39,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990694653] [2021-11-06 17:15:39,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 17:15:39,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:15:39,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 17:15:39,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-06 17:15:39,206 INFO L87 Difference]: Start difference. First operand 25071 states and 38286 transitions. Second operand has 10 states, 10 states have (on average 28.2) internal successors, (282), 9 states have internal predecessors, (282), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Killed by 15