./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash aa00a102435cd9be2574d2e777aad2e91126f080f8422a74b94328a4b8d020d8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:29:39,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:29:39,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:29:39,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:29:39,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:29:39,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:29:39,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:29:39,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:29:39,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:29:39,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:29:39,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:29:39,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:29:39,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:29:39,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:29:39,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:29:39,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:29:39,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:29:39,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:29:39,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:29:39,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:29:39,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:29:39,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:29:39,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:29:39,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:29:39,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:29:39,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:29:39,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:29:39,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:29:39,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:29:39,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:29:39,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:29:39,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:29:39,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:29:39,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:29:39,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:29:39,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:29:39,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:29:39,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:29:39,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:29:39,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:29:39,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:29:39,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:29:39,873 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:29:39,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:29:39,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:29:39,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:29:39,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:29:39,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:29:39,878 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:29:39,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:29:39,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:29:39,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:29:39,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:29:39,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:29:39,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:29:39,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:29:39,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:29:39,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:29:39,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:29:39,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:29:39,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:29:39,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:29:39,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:29:39,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:29:39,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:29:39,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:29:39,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:29:39,881 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:29:39,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:29:39,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:29:39,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:29:39,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa00a102435cd9be2574d2e777aad2e91126f080f8422a74b94328a4b8d020d8 [2021-11-06 15:29:40,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:29:40,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:29:40,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:29:40,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:29:40,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:29:40,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:29:40,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a1c3756/d2feaa24879d4861b7825ae02ba80a23/FLAG5b7e26229 [2021-11-06 15:29:40,697 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:29:40,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:29:40,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a1c3756/d2feaa24879d4861b7825ae02ba80a23/FLAG5b7e26229 [2021-11-06 15:29:40,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a1c3756/d2feaa24879d4861b7825ae02ba80a23 [2021-11-06 15:29:40,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:29:40,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:29:40,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:29:40,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:29:40,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:29:40,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:29:40" (1/1) ... [2021-11-06 15:29:40,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f565cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:40, skipping insertion in model container [2021-11-06 15:29:40,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:29:40" (1/1) ... [2021-11-06 15:29:40,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:29:41,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:29:41,625 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i[120657,120670] [2021-11-06 15:29:41,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:29:41,680 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:29:41,815 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i[120657,120670] [2021-11-06 15:29:41,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:29:41,867 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:29:41,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41 WrapperNode [2021-11-06 15:29:41,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:29:41,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:29:41,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:29:41,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:29:41,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41" (1/1) ... [2021-11-06 15:29:41,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41" (1/1) ... [2021-11-06 15:29:42,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:29:42,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:29:42,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:29:42,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:29:42,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41" (1/1) ... [2021-11-06 15:29:42,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41" (1/1) ... [2021-11-06 15:29:42,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41" (1/1) ... [2021-11-06 15:29:42,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41" (1/1) ... [2021-11-06 15:29:42,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41" (1/1) ... [2021-11-06 15:29:42,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41" (1/1) ... [2021-11-06 15:29:42,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41" (1/1) ... [2021-11-06 15:29:42,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:29:42,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:29:42,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:29:42,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:29:42,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41" (1/1) ... [2021-11-06 15:29:42,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:29:42,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:29:42,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 15:29:42,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 15:29:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:29:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:29:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:29:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:29:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:29:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:29:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:29:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:29:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 15:29:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:29:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:29:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:29:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:29:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:29:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:29:42,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:29:44,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:29:44,808 INFO L299 CfgBuilder]: Removed 582 assume(true) statements. [2021-11-06 15:29:44,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:29:44 BoogieIcfgContainer [2021-11-06 15:29:44,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:29:44,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:29:44,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:29:44,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:29:44,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:29:40" (1/3) ... [2021-11-06 15:29:44,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733246a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:29:44, skipping insertion in model container [2021-11-06 15:29:44,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:41" (2/3) ... [2021-11-06 15:29:44,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733246a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:29:44, skipping insertion in model container [2021-11-06 15:29:44,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:29:44" (3/3) ... [2021-11-06 15:29:44,816 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:29:44,819 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:29:44,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-06 15:29:44,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:29:44,890 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 15:29:44,890 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-06 15:29:44,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 510 states, 501 states have (on average 1.3373253493013972) internal successors, (670), 509 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:44,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 15:29:44,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:44,944 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] [2021-11-06 15:29:44,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:44,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash -38838034, now seen corresponding path program 1 times [2021-11-06 15:29:44,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:44,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342781130] [2021-11-06 15:29:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:44,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:29:45,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:45,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342781130] [2021-11-06 15:29:45,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342781130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:45,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:45,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:29:45,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716961408] [2021-11-06 15:29:45,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:29:45,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:45,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:29:45,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:29:45,343 INFO L87 Difference]: Start difference. First operand has 510 states, 501 states have (on average 1.3373253493013972) internal successors, (670), 509 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:45,384 INFO L93 Difference]: Finished difference Result 1016 states and 1335 transitions. [2021-11-06 15:29:45,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:29:45,386 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-06 15:29:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:45,396 INFO L225 Difference]: With dead ends: 1016 [2021-11-06 15:29:45,399 INFO L226 Difference]: Without dead ends: 471 [2021-11-06 15:29:45,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:29:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-06 15:29:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2021-11-06 15:29:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 463 states have (on average 1.2548596112311015) internal successors, (581), 470 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 581 transitions. [2021-11-06 15:29:45,465 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 581 transitions. Word has length 106 [2021-11-06 15:29:45,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:45,466 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 581 transitions. [2021-11-06 15:29:45,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:45,466 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 581 transitions. [2021-11-06 15:29:45,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 15:29:45,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:45,469 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] [2021-11-06 15:29:45,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:29:45,470 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:45,472 INFO L85 PathProgramCache]: Analyzing trace with hash -242320004, now seen corresponding path program 1 times [2021-11-06 15:29:45,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:45,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079615754] [2021-11-06 15:29:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:45,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:29:45,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:45,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079615754] [2021-11-06 15:29:45,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079615754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:45,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:45,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:29:45,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403932231] [2021-11-06 15:29:45,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:29:45,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:45,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:29:45,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:45,675 INFO L87 Difference]: Start difference. First operand 471 states and 581 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:45,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:45,730 INFO L93 Difference]: Finished difference Result 951 states and 1189 transitions. [2021-11-06 15:29:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:29:45,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-06 15:29:45,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:45,733 INFO L225 Difference]: With dead ends: 951 [2021-11-06 15:29:45,733 INFO L226 Difference]: Without dead ends: 525 [2021-11-06 15:29:45,734 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-06 15:29:45,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2021-11-06 15:29:45,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 517 states have (on average 1.264990328820116) internal successors, (654), 524 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 654 transitions. [2021-11-06 15:29:45,749 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 654 transitions. Word has length 106 [2021-11-06 15:29:45,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:45,749 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 654 transitions. [2021-11-06 15:29:45,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 654 transitions. [2021-11-06 15:29:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 15:29:45,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:45,760 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:29:45,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:29:45,761 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:45,761 INFO L85 PathProgramCache]: Analyzing trace with hash 38091681, now seen corresponding path program 1 times [2021-11-06 15:29:45,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:45,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034887349] [2021-11-06 15:29:45,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:45,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:46,025 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 15:29:46,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:46,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034887349] [2021-11-06 15:29:46,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034887349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:46,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:46,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:29:46,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065131869] [2021-11-06 15:29:46,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:29:46,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:29:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:46,032 INFO L87 Difference]: Start difference. First operand 525 states and 654 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:46,297 INFO L93 Difference]: Finished difference Result 1610 states and 2039 transitions. [2021-11-06 15:29:46,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:29:46,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 118 [2021-11-06 15:29:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:46,301 INFO L225 Difference]: With dead ends: 1610 [2021-11-06 15:29:46,301 INFO L226 Difference]: Without dead ends: 1130 [2021-11-06 15:29:46,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-11-06 15:29:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 527. [2021-11-06 15:29:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 519 states have (on average 1.2639691714836223) internal successors, (656), 526 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 656 transitions. [2021-11-06 15:29:46,313 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 656 transitions. Word has length 118 [2021-11-06 15:29:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:46,314 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 656 transitions. [2021-11-06 15:29:46,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 656 transitions. [2021-11-06 15:29:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 15:29:46,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:46,315 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:29:46,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:29:46,316 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:46,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:46,316 INFO L85 PathProgramCache]: Analyzing trace with hash -442988577, now seen corresponding path program 1 times [2021-11-06 15:29:46,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:46,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634316695] [2021-11-06 15:29:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:46,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:46,453 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 15:29:46,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:46,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634316695] [2021-11-06 15:29:46,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634316695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:46,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:46,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:29:46,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900674149] [2021-11-06 15:29:46,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:29:46,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:46,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:29:46,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:46,458 INFO L87 Difference]: Start difference. First operand 527 states and 656 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:46,474 INFO L93 Difference]: Finished difference Result 1011 states and 1268 transitions. [2021-11-06 15:29:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:29:46,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 118 [2021-11-06 15:29:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:46,477 INFO L225 Difference]: With dead ends: 1011 [2021-11-06 15:29:46,477 INFO L226 Difference]: Without dead ends: 529 [2021-11-06 15:29:46,478 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-06 15:29:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 528. [2021-11-06 15:29:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 520 states have (on average 1.2634615384615384) internal successors, (657), 527 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 657 transitions. [2021-11-06 15:29:46,486 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 657 transitions. Word has length 118 [2021-11-06 15:29:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:46,487 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 657 transitions. [2021-11-06 15:29:46,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 657 transitions. [2021-11-06 15:29:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-06 15:29:46,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:46,488 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:29:46,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:29:46,489 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:46,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash 23502531, now seen corresponding path program 1 times [2021-11-06 15:29:46,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:46,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218783122] [2021-11-06 15:29:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:46,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 15:29:46,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:46,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218783122] [2021-11-06 15:29:46,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218783122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:46,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:46,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:29:46,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18718185] [2021-11-06 15:29:46,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:29:46,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:46,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:29:46,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:46,628 INFO L87 Difference]: Start difference. First operand 528 states and 657 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:46,690 INFO L93 Difference]: Finished difference Result 2026 states and 2582 transitions. [2021-11-06 15:29:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:29:46,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 120 [2021-11-06 15:29:46,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:46,696 INFO L225 Difference]: With dead ends: 2026 [2021-11-06 15:29:46,696 INFO L226 Difference]: Without dead ends: 1543 [2021-11-06 15:29:46,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2021-11-06 15:29:46,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 530. [2021-11-06 15:29:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 522 states have (on average 1.2624521072796935) internal successors, (659), 529 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 659 transitions. [2021-11-06 15:29:46,711 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 659 transitions. Word has length 120 [2021-11-06 15:29:46,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:46,712 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 659 transitions. [2021-11-06 15:29:46,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,712 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 659 transitions. [2021-11-06 15:29:46,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 15:29:46,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:46,713 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:29:46,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:29:46,714 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:46,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:46,714 INFO L85 PathProgramCache]: Analyzing trace with hash -199075039, now seen corresponding path program 1 times [2021-11-06 15:29:46,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:46,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694727866] [2021-11-06 15:29:46,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:46,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 15:29:46,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:46,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694727866] [2021-11-06 15:29:46,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694727866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:46,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:46,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:29:46,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192230087] [2021-11-06 15:29:46,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:29:46,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:46,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:29:46,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:46,833 INFO L87 Difference]: Start difference. First operand 530 states and 659 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:46,909 INFO L93 Difference]: Finished difference Result 2046 states and 2597 transitions. [2021-11-06 15:29:46,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:29:46,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 127 [2021-11-06 15:29:46,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:46,914 INFO L225 Difference]: With dead ends: 2046 [2021-11-06 15:29:46,914 INFO L226 Difference]: Without dead ends: 1561 [2021-11-06 15:29:46,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-11-06 15:29:46,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 532. [2021-11-06 15:29:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 524 states have (on average 1.2614503816793894) internal successors, (661), 531 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 661 transitions. [2021-11-06 15:29:46,963 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 661 transitions. Word has length 127 [2021-11-06 15:29:46,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:46,964 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 661 transitions. [2021-11-06 15:29:46,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:46,964 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 661 transitions. [2021-11-06 15:29:46,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 15:29:46,966 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:46,966 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:29:46,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:29:46,967 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:46,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1220143393, now seen corresponding path program 1 times [2021-11-06 15:29:46,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:46,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757634680] [2021-11-06 15:29:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:46,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 15:29:47,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:47,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757634680] [2021-11-06 15:29:47,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757634680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:47,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:47,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:29:47,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637751812] [2021-11-06 15:29:47,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:29:47,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:29:47,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:47,205 INFO L87 Difference]: Start difference. First operand 532 states and 661 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:47,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:47,797 INFO L93 Difference]: Finished difference Result 1474 states and 1857 transitions. [2021-11-06 15:29:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:29:47,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 127 [2021-11-06 15:29:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:47,802 INFO L225 Difference]: With dead ends: 1474 [2021-11-06 15:29:47,802 INFO L226 Difference]: Without dead ends: 1458 [2021-11-06 15:29:47,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:47,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-11-06 15:29:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 995. [2021-11-06 15:29:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 987 states have (on average 1.2674772036474165) internal successors, (1251), 994 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:47,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1251 transitions. [2021-11-06 15:29:47,822 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1251 transitions. Word has length 127 [2021-11-06 15:29:47,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:47,823 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1251 transitions. [2021-11-06 15:29:47,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:47,823 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1251 transitions. [2021-11-06 15:29:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 15:29:47,825 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:47,825 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:29:47,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:29:47,825 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:47,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:47,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1283400906, now seen corresponding path program 1 times [2021-11-06 15:29:47,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:47,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484215223] [2021-11-06 15:29:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:47,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 15:29:48,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:48,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484215223] [2021-11-06 15:29:48,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484215223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:48,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:48,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:29:48,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941932297] [2021-11-06 15:29:48,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:29:48,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:29:48,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:29:48,081 INFO L87 Difference]: Start difference. First operand 995 states and 1251 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:48,486 INFO L93 Difference]: Finished difference Result 1482 states and 1865 transitions. [2021-11-06 15:29:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:29:48,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 135 [2021-11-06 15:29:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:48,491 INFO L225 Difference]: With dead ends: 1482 [2021-11-06 15:29:48,491 INFO L226 Difference]: Without dead ends: 1466 [2021-11-06 15:29:48,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:29:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-06 15:29:48,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1466. [2021-11-06 15:29:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1458 states have (on average 1.2681755829903978) internal successors, (1849), 1465 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1849 transitions. [2021-11-06 15:29:48,524 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1849 transitions. Word has length 135 [2021-11-06 15:29:48,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:48,524 INFO L470 AbstractCegarLoop]: Abstraction has 1466 states and 1849 transitions. [2021-11-06 15:29:48,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:48,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1849 transitions. [2021-11-06 15:29:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-06 15:29:48,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:48,527 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] [2021-11-06 15:29:48,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:29:48,527 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:48,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:48,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1345522381, now seen corresponding path program 1 times [2021-11-06 15:29:48,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:48,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20565070] [2021-11-06 15:29:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:48,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:48,698 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 15:29:48,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:48,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20565070] [2021-11-06 15:29:48,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20565070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:48,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:48,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:29:48,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747104725] [2021-11-06 15:29:48,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:29:48,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:48,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:29:48,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:48,701 INFO L87 Difference]: Start difference. First operand 1466 states and 1849 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:49,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:49,704 INFO L93 Difference]: Finished difference Result 3842 states and 4888 transitions. [2021-11-06 15:29:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:29:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 145 [2021-11-06 15:29:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:49,719 INFO L225 Difference]: With dead ends: 3842 [2021-11-06 15:29:49,719 INFO L226 Difference]: Without dead ends: 2421 [2021-11-06 15:29:49,723 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 15:29:49,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2021-11-06 15:29:49,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1472. [2021-11-06 15:29:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1464 states have (on average 1.2670765027322404) internal successors, (1855), 1471 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1855 transitions. [2021-11-06 15:29:49,809 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1855 transitions. Word has length 145 [2021-11-06 15:29:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:49,809 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 1855 transitions. [2021-11-06 15:29:49,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1855 transitions. [2021-11-06 15:29:49,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-06 15:29:49,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:49,811 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] [2021-11-06 15:29:49,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 15:29:49,812 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:49,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash 722602251, now seen corresponding path program 1 times [2021-11-06 15:29:49,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:49,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949755540] [2021-11-06 15:29:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:49,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:29:49,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:49,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949755540] [2021-11-06 15:29:49,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949755540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:49,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:49,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:29:49,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584067622] [2021-11-06 15:29:49,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:29:49,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:49,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:29:49,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:49,947 INFO L87 Difference]: Start difference. First operand 1472 states and 1855 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:50,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:50,324 INFO L93 Difference]: Finished difference Result 3869 states and 4909 transitions. [2021-11-06 15:29:50,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:29:50,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-06 15:29:50,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:50,336 INFO L225 Difference]: With dead ends: 3869 [2021-11-06 15:29:50,336 INFO L226 Difference]: Without dead ends: 2442 [2021-11-06 15:29:50,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-11-06 15:29:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1478. [2021-11-06 15:29:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1470 states have (on average 1.2659863945578231) internal successors, (1861), 1477 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:50,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1861 transitions. [2021-11-06 15:29:50,385 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1861 transitions. Word has length 147 [2021-11-06 15:29:50,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:50,385 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 1861 transitions. [2021-11-06 15:29:50,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:50,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1861 transitions. [2021-11-06 15:29:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-06 15:29:50,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:50,387 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] [2021-11-06 15:29:50,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 15:29:50,388 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:50,388 INFO L85 PathProgramCache]: Analyzing trace with hash 737343163, now seen corresponding path program 1 times [2021-11-06 15:29:50,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:50,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252264622] [2021-11-06 15:29:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:50,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:50,514 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 15:29:50,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:50,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252264622] [2021-11-06 15:29:50,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252264622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:50,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:50,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:29:50,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159897855] [2021-11-06 15:29:50,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:29:50,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:50,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:29:50,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:50,517 INFO L87 Difference]: Start difference. First operand 1478 states and 1861 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:51,902 INFO L93 Difference]: Finished difference Result 3872 states and 4918 transitions. [2021-11-06 15:29:51,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:29:51,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-06 15:29:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:51,916 INFO L225 Difference]: With dead ends: 3872 [2021-11-06 15:29:51,916 INFO L226 Difference]: Without dead ends: 2439 [2021-11-06 15:29:51,918 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 15:29:51,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2021-11-06 15:29:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1478. [2021-11-06 15:29:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1470 states have (on average 1.2659863945578231) internal successors, (1861), 1477 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1861 transitions. [2021-11-06 15:29:51,970 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1861 transitions. Word has length 147 [2021-11-06 15:29:51,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:51,971 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 1861 transitions. [2021-11-06 15:29:51,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:51,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1861 transitions. [2021-11-06 15:29:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 15:29:51,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:51,973 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] [2021-11-06 15:29:51,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 15:29:51,973 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2084873882, now seen corresponding path program 1 times [2021-11-06 15:29:51,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:51,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707167616] [2021-11-06 15:29:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:51,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:52,080 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 15:29:52,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:52,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707167616] [2021-11-06 15:29:52,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707167616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:52,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:52,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:29:52,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866284238] [2021-11-06 15:29:52,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:29:52,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:52,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:29:52,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:52,083 INFO L87 Difference]: Start difference. First operand 1478 states and 1861 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:52,526 INFO L93 Difference]: Finished difference Result 2914 states and 3681 transitions. [2021-11-06 15:29:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:29:52,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-06 15:29:52,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:52,531 INFO L225 Difference]: With dead ends: 2914 [2021-11-06 15:29:52,531 INFO L226 Difference]: Without dead ends: 1481 [2021-11-06 15:29:52,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:52,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2021-11-06 15:29:52,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1481. [2021-11-06 15:29:52,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1473 states have (on average 1.2654446707399865) internal successors, (1864), 1480 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1864 transitions. [2021-11-06 15:29:52,601 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1864 transitions. Word has length 148 [2021-11-06 15:29:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:52,601 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 1864 transitions. [2021-11-06 15:29:52,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:52,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1864 transitions. [2021-11-06 15:29:52,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 15:29:52,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:52,603 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] [2021-11-06 15:29:52,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 15:29:52,604 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:52,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:52,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1242742760, now seen corresponding path program 1 times [2021-11-06 15:29:52,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:52,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164953532] [2021-11-06 15:29:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:52,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:52,811 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 15:29:52,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:52,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164953532] [2021-11-06 15:29:52,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164953532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:52,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:52,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:29:52,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620974575] [2021-11-06 15:29:52,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:29:52,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:29:52,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:52,813 INFO L87 Difference]: Start difference. First operand 1481 states and 1864 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:53,111 INFO L93 Difference]: Finished difference Result 5911 states and 7575 transitions. [2021-11-06 15:29:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:29:53,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-06 15:29:53,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:53,125 INFO L225 Difference]: With dead ends: 5911 [2021-11-06 15:29:53,125 INFO L226 Difference]: Without dead ends: 4475 [2021-11-06 15:29:53,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:29:53,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2021-11-06 15:29:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 1490. [2021-11-06 15:29:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1482 states have (on average 1.2638326585695008) internal successors, (1873), 1489 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1873 transitions. [2021-11-06 15:29:53,218 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1873 transitions. Word has length 148 [2021-11-06 15:29:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:53,218 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 1873 transitions. [2021-11-06 15:29:53,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1873 transitions. [2021-11-06 15:29:53,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 15:29:53,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:53,220 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] [2021-11-06 15:29:53,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 15:29:53,220 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:53,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1493147347, now seen corresponding path program 1 times [2021-11-06 15:29:53,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:53,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336883812] [2021-11-06 15:29:53,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:53,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:53,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:29:53,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:53,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336883812] [2021-11-06 15:29:53,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336883812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:53,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:53,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:29:53,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081245552] [2021-11-06 15:29:53,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:29:53,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:53,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:29:53,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:53,332 INFO L87 Difference]: Start difference. First operand 1490 states and 1873 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:54,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:54,004 INFO L93 Difference]: Finished difference Result 3917 states and 4957 transitions. [2021-11-06 15:29:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:29:54,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 149 [2021-11-06 15:29:54,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:54,021 INFO L225 Difference]: With dead ends: 3917 [2021-11-06 15:29:54,021 INFO L226 Difference]: Without dead ends: 2472 [2021-11-06 15:29:54,024 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2021-11-06 15:29:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1490. [2021-11-06 15:29:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1482 states have (on average 1.2638326585695008) internal successors, (1873), 1489 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1873 transitions. [2021-11-06 15:29:54,090 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1873 transitions. Word has length 149 [2021-11-06 15:29:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:54,091 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 1873 transitions. [2021-11-06 15:29:54,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1873 transitions. [2021-11-06 15:29:54,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 15:29:54,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:54,093 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] [2021-11-06 15:29:54,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 15:29:54,093 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:54,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:54,094 INFO L85 PathProgramCache]: Analyzing trace with hash 109974458, now seen corresponding path program 1 times [2021-11-06 15:29:54,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:54,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533674635] [2021-11-06 15:29:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:54,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:29:54,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:54,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533674635] [2021-11-06 15:29:54,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533674635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:54,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:54,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:29:54,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980667511] [2021-11-06 15:29:54,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:29:54,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:54,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:29:54,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:54,194 INFO L87 Difference]: Start difference. First operand 1490 states and 1873 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:54,476 INFO L93 Difference]: Finished difference Result 2938 states and 3705 transitions. [2021-11-06 15:29:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:29:54,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-06 15:29:54,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:54,480 INFO L225 Difference]: With dead ends: 2938 [2021-11-06 15:29:54,481 INFO L226 Difference]: Without dead ends: 1493 [2021-11-06 15:29:54,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2021-11-06 15:29:54,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1493. [2021-11-06 15:29:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1485 states have (on average 1.2632996632996634) internal successors, (1876), 1492 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 1876 transitions. [2021-11-06 15:29:54,557 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 1876 transitions. Word has length 151 [2021-11-06 15:29:54,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:54,557 INFO L470 AbstractCegarLoop]: Abstraction has 1493 states and 1876 transitions. [2021-11-06 15:29:54,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:54,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 1876 transitions. [2021-11-06 15:29:54,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 15:29:54,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:54,559 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] [2021-11-06 15:29:54,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 15:29:54,560 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:54,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:54,560 INFO L85 PathProgramCache]: Analyzing trace with hash 55581560, now seen corresponding path program 1 times [2021-11-06 15:29:54,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:54,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330742569] [2021-11-06 15:29:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:54,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:29:54,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:54,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330742569] [2021-11-06 15:29:54,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330742569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:54,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:54,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:29:54,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033561861] [2021-11-06 15:29:54,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:29:54,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:54,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:29:54,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:54,672 INFO L87 Difference]: Start difference. First operand 1493 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:54,729 INFO L93 Difference]: Finished difference Result 2947 states and 3714 transitions. [2021-11-06 15:29:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:29:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-06 15:29:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:54,748 INFO L225 Difference]: With dead ends: 2947 [2021-11-06 15:29:54,748 INFO L226 Difference]: Without dead ends: 1499 [2021-11-06 15:29:54,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:54,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2021-11-06 15:29:54,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1496. [2021-11-06 15:29:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1488 states have (on average 1.262768817204301) internal successors, (1879), 1495 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1879 transitions. [2021-11-06 15:29:54,813 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1879 transitions. Word has length 151 [2021-11-06 15:29:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:54,813 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 1879 transitions. [2021-11-06 15:29:54,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:54,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1879 transitions. [2021-11-06 15:29:54,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-06 15:29:54,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:54,815 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] [2021-11-06 15:29:54,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 15:29:54,816 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:54,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash -522470724, now seen corresponding path program 1 times [2021-11-06 15:29:54,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:54,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520512142] [2021-11-06 15:29:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:54,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:29:54,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:54,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520512142] [2021-11-06 15:29:54,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520512142] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:29:54,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534733618] [2021-11-06 15:29:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:54,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:29:54,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:29:54,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:29:54,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:29:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:55,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 15:29:55,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:29:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:29:55,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534733618] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:29:55,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:29:55,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 15:29:55,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012824508] [2021-11-06 15:29:55,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:29:55,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:55,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:29:55,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:55,824 INFO L87 Difference]: Start difference. First operand 1496 states and 1879 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:55,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:55,894 INFO L93 Difference]: Finished difference Result 2953 states and 3720 transitions. [2021-11-06 15:29:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:29:55,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-11-06 15:29:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:55,898 INFO L225 Difference]: With dead ends: 2953 [2021-11-06 15:29:55,898 INFO L226 Difference]: Without dead ends: 1502 [2021-11-06 15:29:55,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:55,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-11-06 15:29:55,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1502. [2021-11-06 15:29:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1494 states have (on average 1.2617135207496653) internal successors, (1885), 1501 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1885 transitions. [2021-11-06 15:29:55,980 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1885 transitions. Word has length 153 [2021-11-06 15:29:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:55,980 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 1885 transitions. [2021-11-06 15:29:55,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1885 transitions. [2021-11-06 15:29:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-06 15:29:55,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:55,983 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:29:56,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 15:29:56,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-06 15:29:56,199 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:56,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1979934464, now seen corresponding path program 2 times [2021-11-06 15:29:56,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:56,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445301450] [2021-11-06 15:29:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:56,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:29:56,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:56,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445301450] [2021-11-06 15:29:56,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445301450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:56,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:56,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:29:56,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943001157] [2021-11-06 15:29:56,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:29:56,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:56,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:29:56,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:56,301 INFO L87 Difference]: Start difference. First operand 1502 states and 1885 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:56,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:56,509 INFO L93 Difference]: Finished difference Result 5402 states and 6946 transitions. [2021-11-06 15:29:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:29:56,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 155 [2021-11-06 15:29:56,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:56,516 INFO L225 Difference]: With dead ends: 5402 [2021-11-06 15:29:56,516 INFO L226 Difference]: Without dead ends: 3945 [2021-11-06 15:29:56,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2021-11-06 15:29:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 1508. [2021-11-06 15:29:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1500 states have (on average 1.2606666666666666) internal successors, (1891), 1507 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 1891 transitions. [2021-11-06 15:29:56,598 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 1891 transitions. Word has length 155 [2021-11-06 15:29:56,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:56,599 INFO L470 AbstractCegarLoop]: Abstraction has 1508 states and 1891 transitions. [2021-11-06 15:29:56,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:56,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 1891 transitions. [2021-11-06 15:29:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-06 15:29:56,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:56,601 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] [2021-11-06 15:29:56,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 15:29:56,601 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1476952148, now seen corresponding path program 1 times [2021-11-06 15:29:56,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:56,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13498264] [2021-11-06 15:29:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:56,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:56,794 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 15:29:56,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:56,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13498264] [2021-11-06 15:29:56,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13498264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:56,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:56,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:29:56,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559060300] [2021-11-06 15:29:56,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:29:56,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:29:56,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:29:56,796 INFO L87 Difference]: Start difference. First operand 1508 states and 1891 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:57,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:57,153 INFO L93 Difference]: Finished difference Result 6302 states and 8017 transitions. [2021-11-06 15:29:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:29:57,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 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 155 [2021-11-06 15:29:57,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:57,161 INFO L225 Difference]: With dead ends: 6302 [2021-11-06 15:29:57,162 INFO L226 Difference]: Without dead ends: 4839 [2021-11-06 15:29:57,165 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:29:57,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2021-11-06 15:29:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 1517. [2021-11-06 15:29:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1509 states have (on average 1.259111994698476) internal successors, (1900), 1516 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:57,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 1900 transitions. [2021-11-06 15:29:57,260 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 1900 transitions. Word has length 155 [2021-11-06 15:29:57,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:57,261 INFO L470 AbstractCegarLoop]: Abstraction has 1517 states and 1900 transitions. [2021-11-06 15:29:57,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:57,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 1900 transitions. [2021-11-06 15:29:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-06 15:29:57,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:57,263 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] [2021-11-06 15:29:57,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 15:29:57,263 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:57,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1506060004, now seen corresponding path program 1 times [2021-11-06 15:29:57,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:57,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493733561] [2021-11-06 15:29:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:57,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:57,861 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 15:29:57,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:57,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493733561] [2021-11-06 15:29:57,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493733561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:57,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:57,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:29:57,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788486829] [2021-11-06 15:29:57,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:29:57,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:57,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:29:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:57,863 INFO L87 Difference]: Start difference. First operand 1517 states and 1900 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:57,940 INFO L93 Difference]: Finished difference Result 2996 states and 3763 transitions. [2021-11-06 15:29:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:29:57,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 161 [2021-11-06 15:29:57,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:57,944 INFO L225 Difference]: With dead ends: 2996 [2021-11-06 15:29:57,944 INFO L226 Difference]: Without dead ends: 1519 [2021-11-06 15:29:57,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:29:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-11-06 15:29:58,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1519. [2021-11-06 15:29:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1511 states have (on average 1.2587690271343481) internal successors, (1902), 1518 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1902 transitions. [2021-11-06 15:29:58,029 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1902 transitions. Word has length 161 [2021-11-06 15:29:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:58,029 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 1902 transitions. [2021-11-06 15:29:58,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1902 transitions. [2021-11-06 15:29:58,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-06 15:29:58,031 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:58,031 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] [2021-11-06 15:29:58,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 15:29:58,047 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:29:58,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:58,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1141394366, now seen corresponding path program 1 times [2021-11-06 15:29:58,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:58,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789491164] [2021-11-06 15:29:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:58,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 15:29:58,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:58,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789491164] [2021-11-06 15:29:58,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789491164] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:29:58,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232976298] [2021-11-06 15:29:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:58,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:29:58,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:29:58,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:29:58,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 15:29:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:59,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 15:29:59,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:29:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:29:59,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232976298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:59,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:29:59,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-06 15:29:59,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182958409] [2021-11-06 15:29:59,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:29:59,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:59,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:29:59,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:29:59,446 INFO L87 Difference]: Start difference. First operand 1519 states and 1902 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:30:00,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:30:00,413 INFO L93 Difference]: Finished difference Result 3012 states and 3782 transitions. [2021-11-06 15:30:00,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:30:00,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-06 15:30:00,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:30:00,417 INFO L225 Difference]: With dead ends: 3012 [2021-11-06 15:30:00,417 INFO L226 Difference]: Without dead ends: 1516 [2021-11-06 15:30:00,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:30:00,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-11-06 15:30:00,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1492. [2021-11-06 15:30:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1484 states have (on average 1.2533692722371967) internal successors, (1860), 1491 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:30:00,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1860 transitions. [2021-11-06 15:30:00,502 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1860 transitions. Word has length 163 [2021-11-06 15:30:00,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:30:00,502 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 1860 transitions. [2021-11-06 15:30:00,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:30:00,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1860 transitions. [2021-11-06 15:30:00,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 15:30:00,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:30:00,504 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] [2021-11-06 15:30:00,531 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 15:30:00,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-06 15:30:00,725 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:30:00,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:30:00,726 INFO L85 PathProgramCache]: Analyzing trace with hash 607182715, now seen corresponding path program 1 times [2021-11-06 15:30:00,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:30:00,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506812329] [2021-11-06 15:30:00,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:30:00,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:30:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:30:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 15:30:01,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:30:01,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506812329] [2021-11-06 15:30:01,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506812329] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:30:01,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726105187] [2021-11-06 15:30:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:30:01,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:30:01,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:30:01,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:30:01,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 15:30:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:30:02,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-06 15:30:02,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:30:02,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 15:30:02,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726105187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:30:02,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:30:02,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-06 15:30:02,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052986983] [2021-11-06 15:30:02,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:30:02,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:30:02,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:30:02,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:30:02,523 INFO L87 Difference]: Start difference. First operand 1492 states and 1860 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:30:03,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:30:03,125 INFO L93 Difference]: Finished difference Result 7523 states and 9638 transitions. [2021-11-06 15:30:03,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 15:30:03,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-06 15:30:03,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:30:03,137 INFO L225 Difference]: With dead ends: 7523 [2021-11-06 15:30:03,137 INFO L226 Difference]: Without dead ends: 6078 [2021-11-06 15:30:03,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-06 15:30:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2021-11-06 15:30:03,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 1492. [2021-11-06 15:30:03,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1484 states have (on average 1.2533692722371967) internal successors, (1860), 1491 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:30:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1860 transitions. [2021-11-06 15:30:03,283 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1860 transitions. Word has length 165 [2021-11-06 15:30:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:30:03,283 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 1860 transitions. [2021-11-06 15:30:03,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:30:03,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1860 transitions. [2021-11-06 15:30:03,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 15:30:03,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:30:03,286 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] [2021-11-06 15:30:03,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 15:30:03,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:30:03,496 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:30:03,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:30:03,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1051083389, now seen corresponding path program 1 times [2021-11-06 15:30:03,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:30:03,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743414039] [2021-11-06 15:30:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:30:03,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:30:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:30:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 15:30:04,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:30:04,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743414039] [2021-11-06 15:30:04,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743414039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:30:04,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078851318] [2021-11-06 15:30:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:30:04,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:30:04,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:30:04,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:30:04,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 15:30:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:30:10,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 15:30:10,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:30:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 15:30:11,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078851318] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:30:11,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:30:11,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 15:30:11,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899716133] [2021-11-06 15:30:11,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:30:11,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:30:11,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:30:11,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:30:11,145 INFO L87 Difference]: Start difference. First operand 1492 states and 1860 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:30:11,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:30:11,311 INFO L93 Difference]: Finished difference Result 2945 states and 3682 transitions. [2021-11-06 15:30:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:30:11,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-06 15:30:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:30:11,314 INFO L225 Difference]: With dead ends: 2945 [2021-11-06 15:30:11,314 INFO L226 Difference]: Without dead ends: 1494 [2021-11-06 15:30:11,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:30:11,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-11-06 15:30:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2021-11-06 15:30:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1486 states have (on average 1.253028263795424) internal successors, (1862), 1493 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:30:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1862 transitions. [2021-11-06 15:30:11,412 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1862 transitions. Word has length 165 [2021-11-06 15:30:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:30:11,412 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 1862 transitions. [2021-11-06 15:30:11,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:30:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1862 transitions. [2021-11-06 15:30:11,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 15:30:11,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:30:11,416 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:30:11,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 15:30:11,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:30:11,636 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 15:30:11,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:30:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1407706271, now seen corresponding path program 2 times [2021-11-06 15:30:11,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:30:11,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411053610] [2021-11-06 15:30:11,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:30:11,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:30:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:30:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:30:12,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:30:12,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411053610] [2021-11-06 15:30:12,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411053610] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:30:12,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264100702] [2021-11-06 15:30:12,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:30:12,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:30:12,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:30:12,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:30:12,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15