./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.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 1ef83f89a2480bb974b27f067785c3859d21a1e764735321272ad8be1e6dccbd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 15:53:46,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 15:53:46,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 15:53:46,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 15:53:46,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 15:53:46,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 15:53:46,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 15:53:46,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 15:53:46,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 15:53:46,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 15:53:46,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 15:53:46,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 15:53:46,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 15:53:46,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 15:53:46,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 15:53:46,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 15:53:46,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 15:53:46,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 15:53:46,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 15:53:46,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 15:53:46,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 15:53:46,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 15:53:46,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 15:53:46,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 15:53:46,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 15:53:46,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 15:53:46,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 15:53:46,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 15:53:46,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 15:53:46,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 15:53:46,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 15:53:46,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 15:53:46,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 15:53:46,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 15:53:46,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 15:53:46,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 15:53:46,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 15:53:46,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 15:53:46,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 15:53:46,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 15:53:46,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 15:53:46,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 15:53:46,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 15:53:46,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 15:53:46,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 15:53:46,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 15:53:46,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 15:53:46,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 15:53:46,681 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 15:53:46,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 15:53:46,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 15:53:46,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 15:53:46,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 15:53:46,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 15:53:46,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 15:53:46,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 15:53:46,683 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 15:53:46,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 15:53:46,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 15:53:46,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 15:53:46,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 15:53:46,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 15:53:46,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 15:53:46,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 15:53:46,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 15:53:46,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 15:53:46,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 15:53:46,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 15:53:46,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 15:53:46,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 15:53:46,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 15:53:46,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ef83f89a2480bb974b27f067785c3859d21a1e764735321272ad8be1e6dccbd [2021-11-05 15:53:46,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 15:53:46,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 15:53:46,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 15:53:46,989 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 15:53:46,990 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 15:53:46,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2021-11-05 15:53:47,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a659b6164/754e1a4cf4274a7fac9a0fc8a97ad43e/FLAG6165530f3 [2021-11-05 15:53:47,570 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 15:53:47,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2021-11-05 15:53:47,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a659b6164/754e1a4cf4274a7fac9a0fc8a97ad43e/FLAG6165530f3 [2021-11-05 15:53:47,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a659b6164/754e1a4cf4274a7fac9a0fc8a97ad43e [2021-11-05 15:53:47,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 15:53:47,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 15:53:47,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 15:53:47,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 15:53:47,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 15:53:47,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 03:53:47" (1/1) ... [2021-11-05 15:53:47,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b94577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:47, skipping insertion in model container [2021-11-05 15:53:47,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 03:53:47" (1/1) ... [2021-11-05 15:53:47,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 15:53:47,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 15:53:48,588 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-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i[133672,133685] [2021-11-05 15:53:48,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 15:53:48,618 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 15:53:48,778 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-consumption/linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i[133672,133685] [2021-11-05 15:53:48,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 15:53:48,835 INFO L208 MainTranslator]: Completed translation [2021-11-05 15:53:48,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48 WrapperNode [2021-11-05 15:53:48,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 15:53:48,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 15:53:48,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 15:53:48,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 15:53:48,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48" (1/1) ... [2021-11-05 15:53:48,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48" (1/1) ... [2021-11-05 15:53:49,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 15:53:49,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 15:53:49,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 15:53:49,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 15:53:49,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48" (1/1) ... [2021-11-05 15:53:49,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48" (1/1) ... [2021-11-05 15:53:49,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48" (1/1) ... [2021-11-05 15:53:49,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48" (1/1) ... [2021-11-05 15:53:49,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48" (1/1) ... [2021-11-05 15:53:49,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48" (1/1) ... [2021-11-05 15:53:49,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48" (1/1) ... [2021-11-05 15:53:49,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 15:53:49,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 15:53:49,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 15:53:49,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 15:53:49,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48" (1/1) ... [2021-11-05 15:53:49,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 15:53:49,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:53:49,372 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) [2021-11-05 15:53:49,407 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 [2021-11-05 15:53:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 15:53:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 15:53:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 15:53:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 15:53:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 15:53:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 15:53:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 15:53:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 15:53:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 15:53:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 15:53:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 15:53:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 15:53:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 15:53:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 15:53:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 15:53:49,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 15:54:03,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 15:54:03,906 INFO L299 CfgBuilder]: Removed 1020 assume(true) statements. [2021-11-05 15:54:03,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 03:54:03 BoogieIcfgContainer [2021-11-05 15:54:03,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 15:54:03,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 15:54:03,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 15:54:03,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 15:54:03,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 03:53:47" (1/3) ... [2021-11-05 15:54:03,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4187b19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 03:54:03, skipping insertion in model container [2021-11-05 15:54:03,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:53:48" (2/3) ... [2021-11-05 15:54:03,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4187b19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 03:54:03, skipping insertion in model container [2021-11-05 15:54:03,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 03:54:03" (3/3) ... [2021-11-05 15:54:03,913 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--input--misc--uinput.ko-ldv_main0.cil.out.i [2021-11-05 15:54:03,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 15:54:03,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-05 15:54:03,958 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 15:54:03,963 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 [2021-11-05 15:54:03,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-05 15:54:03,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 1244 states, 1232 states have (on average 1.4772727272727273) internal successors, (1820), 1243 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:03,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-05 15:54:03,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:03,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:03,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:03,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:03,994 INFO L85 PathProgramCache]: Analyzing trace with hash 117582026, now seen corresponding path program 1 times [2021-11-05 15:54:03,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:04,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270043597] [2021-11-05 15:54:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:04,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:54:04,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:04,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270043597] [2021-11-05 15:54:04,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270043597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:04,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:04,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:54:04,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724130194] [2021-11-05 15:54:04,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:04,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:54:04,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:04,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:54:04,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:04,278 INFO L87 Difference]: Start difference. First operand has 1244 states, 1232 states have (on average 1.4772727272727273) internal successors, (1820), 1243 states have internal predecessors, (1820), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:04,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:04,419 INFO L93 Difference]: Finished difference Result 2480 states and 3631 transitions. [2021-11-05 15:54:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:54:04,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-05 15:54:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:04,438 INFO L225 Difference]: With dead ends: 2480 [2021-11-05 15:54:04,444 INFO L226 Difference]: Without dead ends: 1238 [2021-11-05 15:54:04,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:04,457 INFO L933 BasicCegarLoop]: 1798 mSDtfsCounter, 1793 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.40ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:04,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1793 Valid, 1798 Invalid, 2 Unknown, 0 Unchecked, 8.33ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 27.40ms Time] [2021-11-05 15:54:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-11-05 15:54:04,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1238. [2021-11-05 15:54:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1228 states have (on average 1.461726384364821) internal successors, (1795), 1237 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:04,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1795 transitions. [2021-11-05 15:54:04,544 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1795 transitions. Word has length 8 [2021-11-05 15:54:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:04,544 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1795 transitions. [2021-11-05 15:54:04,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1795 transitions. [2021-11-05 15:54:04,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-05 15:54:04,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:04,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:04,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 15:54:04,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:04,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash -649921806, now seen corresponding path program 1 times [2021-11-05 15:54:04,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:04,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179324295] [2021-11-05 15:54:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:04,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:54:04,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:04,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179324295] [2021-11-05 15:54:04,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179324295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:04,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:04,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:54:04,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474526075] [2021-11-05 15:54:04,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:04,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:54:04,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:04,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:54:04,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:04,635 INFO L87 Difference]: Start difference. First operand 1238 states and 1795 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:04,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:04,689 INFO L93 Difference]: Finished difference Result 1238 states and 1795 transitions. [2021-11-05 15:54:04,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:54:04,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-05 15:54:04,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:04,695 INFO L225 Difference]: With dead ends: 1238 [2021-11-05 15:54:04,696 INFO L226 Difference]: Without dead ends: 1236 [2021-11-05 15:54:04,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:04,700 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 1786 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.32ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.95ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:04,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1786 Valid, 1792 Invalid, 2 Unknown, 0 Unchecked, 4.32ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 19.95ms Time] [2021-11-05 15:54:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-11-05 15:54:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2021-11-05 15:54:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1227 states have (on average 1.4612876935615322) internal successors, (1793), 1235 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:04,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1793 transitions. [2021-11-05 15:54:04,735 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1793 transitions. Word has length 9 [2021-11-05 15:54:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:04,736 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1793 transitions. [2021-11-05 15:54:04,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:04,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1793 transitions. [2021-11-05 15:54:04,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-05 15:54:04,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:04,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:04,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 15:54:04,740 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:04,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:04,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1327263188, now seen corresponding path program 1 times [2021-11-05 15:54:04,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:04,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190322594] [2021-11-05 15:54:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:04,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:54:04,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:04,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190322594] [2021-11-05 15:54:04,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190322594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:04,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:04,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:54:04,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359472424] [2021-11-05 15:54:04,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:04,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:54:04,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:04,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:54:04,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:04,809 INFO L87 Difference]: Start difference. First operand 1236 states and 1793 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:04,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:04,951 INFO L93 Difference]: Finished difference Result 3633 states and 5285 transitions. [2021-11-05 15:54:04,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:54:04,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-11-05 15:54:04,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:04,960 INFO L225 Difference]: With dead ends: 3633 [2021-11-05 15:54:04,960 INFO L226 Difference]: Without dead ends: 2398 [2021-11-05 15:54:04,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:04,968 INFO L933 BasicCegarLoop]: 2759 mSDtfsCounter, 1763 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.79ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.26ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:04,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1763 Valid, 4453 Invalid, 42 Unknown, 0 Unchecked, 10.79ms Time], IncrementalHoareTripleChecker [16 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 69.26ms Time] [2021-11-05 15:54:04,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2021-11-05 15:54:05,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2390. [2021-11-05 15:54:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2381 states have (on average 1.4603107937841244) internal successors, (3477), 2389 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:05,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3477 transitions. [2021-11-05 15:54:05,034 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3477 transitions. Word has length 10 [2021-11-05 15:54:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:05,034 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 3477 transitions. [2021-11-05 15:54:05,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:05,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3477 transitions. [2021-11-05 15:54:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-05 15:54:05,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:05,040 INFO L514 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] [2021-11-05 15:54:05,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 15:54:05,040 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:05,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1775708122, now seen corresponding path program 1 times [2021-11-05 15:54:05,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:05,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616236522] [2021-11-05 15:54:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:05,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:54:05,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:05,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616236522] [2021-11-05 15:54:05,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616236522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:05,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:05,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:54:05,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555480089] [2021-11-05 15:54:05,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:05,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:54:05,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:05,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:54:05,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:05,106 INFO L87 Difference]: Start difference. First operand 2390 states and 3477 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:05,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:05,231 INFO L93 Difference]: Finished difference Result 6379 states and 9297 transitions. [2021-11-05 15:54:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:54:05,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-05 15:54:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:05,245 INFO L225 Difference]: With dead ends: 6379 [2021-11-05 15:54:05,245 INFO L226 Difference]: Without dead ends: 3995 [2021-11-05 15:54:05,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:05,250 INFO L933 BasicCegarLoop]: 1785 mSDtfsCounter, 1199 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.83ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.92ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:05,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1199 Valid, 3538 Invalid, 24 Unknown, 0 Unchecked, 5.83ms Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 25.92ms Time] [2021-11-05 15:54:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2021-11-05 15:54:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3230. [2021-11-05 15:54:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3230 states, 3221 states have (on average 1.4604160198696057) internal successors, (4704), 3229 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3230 states to 3230 states and 4704 transitions. [2021-11-05 15:54:05,393 INFO L78 Accepts]: Start accepts. Automaton has 3230 states and 4704 transitions. Word has length 26 [2021-11-05 15:54:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:05,393 INFO L470 AbstractCegarLoop]: Abstraction has 3230 states and 4704 transitions. [2021-11-05 15:54:05,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3230 states and 4704 transitions. [2021-11-05 15:54:05,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-05 15:54:05,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:05,396 INFO L514 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] [2021-11-05 15:54:05,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 15:54:05,397 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:05,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:05,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1925451413, now seen corresponding path program 1 times [2021-11-05 15:54:05,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:05,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634561688] [2021-11-05 15:54:05,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:05,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:54:05,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:05,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634561688] [2021-11-05 15:54:05,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634561688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:05,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:05,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:54:05,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721362873] [2021-11-05 15:54:05,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:05,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:54:05,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:05,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:54:05,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:54:05,499 INFO L87 Difference]: Start difference. First operand 3230 states and 4704 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:05,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:05,805 INFO L93 Difference]: Finished difference Result 5476 states and 7904 transitions. [2021-11-05 15:54:05,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 15:54:05,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-05 15:54:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:05,818 INFO L225 Difference]: With dead ends: 5476 [2021-11-05 15:54:05,818 INFO L226 Difference]: Without dead ends: 4722 [2021-11-05 15:54:05,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 38.95ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 15:54:05,821 INFO L933 BasicCegarLoop]: 3369 mSDtfsCounter, 2839 mSDsluCounter, 8339 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 11708 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.58ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.66ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:05,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2839 Valid, 11708 Invalid, 134 Unknown, 0 Unchecked, 14.58ms Time], IncrementalHoareTripleChecker [24 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 119.66ms Time] [2021-11-05 15:54:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2021-11-05 15:54:05,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 2480. [2021-11-05 15:54:05,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2471 states have (on average 1.4552812626467018) internal successors, (3596), 2479 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3596 transitions. [2021-11-05 15:54:05,904 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3596 transitions. Word has length 31 [2021-11-05 15:54:05,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:05,904 INFO L470 AbstractCegarLoop]: Abstraction has 2480 states and 3596 transitions. [2021-11-05 15:54:05,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3596 transitions. [2021-11-05 15:54:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-05 15:54:05,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:05,905 INFO L514 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] [2021-11-05 15:54:05,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 15:54:05,906 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:05,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1667285975, now seen corresponding path program 1 times [2021-11-05 15:54:05,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:05,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298396751] [2021-11-05 15:54:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:05,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:54:05,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:05,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298396751] [2021-11-05 15:54:05,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298396751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:05,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:05,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:54:05,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098391329] [2021-11-05 15:54:05,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:05,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:54:05,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:05,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:54:05,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:05,951 INFO L87 Difference]: Start difference. First operand 2480 states and 3596 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:06,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:06,080 INFO L93 Difference]: Finished difference Result 4950 states and 7184 transitions. [2021-11-05 15:54:06,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:54:06,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-05 15:54:06,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:06,088 INFO L225 Difference]: With dead ends: 4950 [2021-11-05 15:54:06,088 INFO L226 Difference]: Without dead ends: 2476 [2021-11-05 15:54:06,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:06,092 INFO L933 BasicCegarLoop]: 1937 mSDtfsCounter, 1690 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.28ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.11ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:06,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1690 Valid, 2583 Invalid, 31 Unknown, 0 Unchecked, 4.28ms Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 59.11ms Time] [2021-11-05 15:54:06,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-11-05 15:54:06,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2469. [2021-11-05 15:54:06,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2462 states have (on average 1.4520714865962632) internal successors, (3575), 2468 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:06,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3575 transitions. [2021-11-05 15:54:06,161 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3575 transitions. Word has length 31 [2021-11-05 15:54:06,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:06,161 INFO L470 AbstractCegarLoop]: Abstraction has 2469 states and 3575 transitions. [2021-11-05 15:54:06,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:06,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3575 transitions. [2021-11-05 15:54:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-05 15:54:06,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:06,163 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:06,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 15:54:06,163 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:06,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:06,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1853261783, now seen corresponding path program 1 times [2021-11-05 15:54:06,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:06,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839277292] [2021-11-05 15:54:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:06,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:54:06,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:06,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839277292] [2021-11-05 15:54:06,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839277292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:06,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:06,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:54:06,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443808295] [2021-11-05 15:54:06,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:06,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:54:06,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:06,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:54:06,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:54:06,240 INFO L87 Difference]: Start difference. First operand 2469 states and 3575 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:06,605 INFO L93 Difference]: Finished difference Result 4841 states and 6955 transitions. [2021-11-05 15:54:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 15:54:06,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-05 15:54:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:06,620 INFO L225 Difference]: With dead ends: 4841 [2021-11-05 15:54:06,620 INFO L226 Difference]: Without dead ends: 4681 [2021-11-05 15:54:06,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.81ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 15:54:06,623 INFO L933 BasicCegarLoop]: 3184 mSDtfsCounter, 6383 mSDsluCounter, 3967 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 148.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6383 SdHoareTripleChecker+Valid, 7151 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.33ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 168.67ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:06,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6383 Valid, 7151 Invalid, 140 Unknown, 0 Unchecked, 14.33ms Time], IncrementalHoareTripleChecker [12 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 168.67ms Time] [2021-11-05 15:54:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2021-11-05 15:54:06,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 2461. [2021-11-05 15:54:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 2454 states have (on average 1.4519152404237978) internal successors, (3563), 2460 states have internal predecessors, (3563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3563 transitions. [2021-11-05 15:54:06,724 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3563 transitions. Word has length 33 [2021-11-05 15:54:06,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:06,724 INFO L470 AbstractCegarLoop]: Abstraction has 2461 states and 3563 transitions. [2021-11-05 15:54:06,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:06,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3563 transitions. [2021-11-05 15:54:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 15:54:06,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:06,726 INFO L514 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] [2021-11-05 15:54:06,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 15:54:06,726 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:06,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash -711577619, now seen corresponding path program 1 times [2021-11-05 15:54:06,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:06,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779541902] [2021-11-05 15:54:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:06,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:54:06,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:06,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779541902] [2021-11-05 15:54:06,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779541902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:06,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:06,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 15:54:06,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636420713] [2021-11-05 15:54:06,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:06,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 15:54:06,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:06,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 15:54:06,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 15:54:06,769 INFO L87 Difference]: Start difference. First operand 2461 states and 3563 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:06,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:06,901 INFO L93 Difference]: Finished difference Result 4927 states and 7131 transitions. [2021-11-05 15:54:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 15:54:06,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-05 15:54:06,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:06,908 INFO L225 Difference]: With dead ends: 4927 [2021-11-05 15:54:06,909 INFO L226 Difference]: Without dead ends: 2470 [2021-11-05 15:54:06,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:54:06,912 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 15 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 5360 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.90ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:06,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 5360 Invalid, 9 Unknown, 0 Unchecked, 4.73ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 12.90ms Time] [2021-11-05 15:54:06,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-11-05 15:54:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2463. [2021-11-05 15:54:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2456 states have (on average 1.4511400651465798) internal successors, (3564), 2462 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 3564 transitions. [2021-11-05 15:54:06,996 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 3564 transitions. Word has length 40 [2021-11-05 15:54:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:06,996 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 3564 transitions. [2021-11-05 15:54:06,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 3564 transitions. [2021-11-05 15:54:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-05 15:54:06,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:06,998 INFO L514 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] [2021-11-05 15:54:06,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 15:54:06,998 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:06,999 INFO L85 PathProgramCache]: Analyzing trace with hash 73641365, now seen corresponding path program 1 times [2021-11-05 15:54:06,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:06,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150447574] [2021-11-05 15:54:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:06,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 15:54:07,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:07,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150447574] [2021-11-05 15:54:07,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150447574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:07,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:07,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:54:07,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246990709] [2021-11-05 15:54:07,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:07,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:54:07,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:07,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:54:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:54:07,080 INFO L87 Difference]: Start difference. First operand 2463 states and 3564 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:07,481 INFO L93 Difference]: Finished difference Result 11850 states and 17038 transitions. [2021-11-05 15:54:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 15:54:07,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 46 [2021-11-05 15:54:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:07,518 INFO L225 Difference]: With dead ends: 11850 [2021-11-05 15:54:07,518 INFO L226 Difference]: Without dead ends: 9393 [2021-11-05 15:54:07,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.76ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 15:54:07,526 INFO L933 BasicCegarLoop]: 4147 mSDtfsCounter, 6713 mSDsluCounter, 11521 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6713 SdHoareTripleChecker+Valid, 15668 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.36ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.14ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:07,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6713 Valid, 15668 Invalid, 81 Unknown, 0 Unchecked, 19.36ms Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 83.14ms Time] [2021-11-05 15:54:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9393 states. [2021-11-05 15:54:07,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9393 to 2376. [2021-11-05 15:54:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2370 states have (on average 1.4464135021097047) internal successors, (3428), 2375 states have internal predecessors, (3428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 3428 transitions. [2021-11-05 15:54:07,652 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 3428 transitions. Word has length 46 [2021-11-05 15:54:07,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:07,652 INFO L470 AbstractCegarLoop]: Abstraction has 2376 states and 3428 transitions. [2021-11-05 15:54:07,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 3428 transitions. [2021-11-05 15:54:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 15:54:07,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:07,654 INFO L514 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] [2021-11-05 15:54:07,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 15:54:07,654 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:07,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash 671326723, now seen corresponding path program 1 times [2021-11-05 15:54:07,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:07,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381086863] [2021-11-05 15:54:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:07,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:54:07,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:07,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381086863] [2021-11-05 15:54:07,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381086863] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:54:07,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532339148] [2021-11-05 15:54:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:07,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:54:07,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:54:07,707 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) [2021-11-05 15:54:07,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 15:54:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:08,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 15:54:08,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:54:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:54:08,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 15:54:08,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:54:08,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532339148] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 15:54:08,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 15:54:08,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-05 15:54:08,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712517953] [2021-11-05 15:54:08,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 15:54:08,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:54:08,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:08,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:54:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:54:08,297 INFO L87 Difference]: Start difference. First operand 2376 states and 3428 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:08,540 INFO L93 Difference]: Finished difference Result 6451 states and 9321 transitions. [2021-11-05 15:54:08,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 15:54:08,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 48 [2021-11-05 15:54:08,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:08,549 INFO L225 Difference]: With dead ends: 6451 [2021-11-05 15:54:08,550 INFO L226 Difference]: Without dead ends: 4081 [2021-11-05 15:54:08,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.06ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:54:08,554 INFO L933 BasicCegarLoop]: 1787 mSDtfsCounter, 4983 mSDsluCounter, 5532 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4983 SdHoareTripleChecker+Valid, 7319 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.90ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.65ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:08,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4983 Valid, 7319 Invalid, 50 Unknown, 0 Unchecked, 7.90ms Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 41.65ms Time] [2021-11-05 15:54:08,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-11-05 15:54:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 4034. [2021-11-05 15:54:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4034 states, 4028 states have (on average 1.452333664349553) internal successors, (5850), 4033 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 5850 transitions. [2021-11-05 15:54:08,719 INFO L78 Accepts]: Start accepts. Automaton has 4034 states and 5850 transitions. Word has length 48 [2021-11-05 15:54:08,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:08,720 INFO L470 AbstractCegarLoop]: Abstraction has 4034 states and 5850 transitions. [2021-11-05 15:54:08,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:08,720 INFO L276 IsEmpty]: Start isEmpty. Operand 4034 states and 5850 transitions. [2021-11-05 15:54:08,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 15:54:08,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:08,722 INFO L514 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] [2021-11-05 15:54:08,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 15:54:08,940 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,SelfDestructingSolverStorable9 [2021-11-05 15:54:08,941 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:08,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:08,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1956285314, now seen corresponding path program 1 times [2021-11-05 15:54:08,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:08,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778260349] [2021-11-05 15:54:08,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:08,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 15:54:08,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:08,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778260349] [2021-11-05 15:54:08,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778260349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:08,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:08,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:54:08,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145039254] [2021-11-05 15:54:08,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:08,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:54:08,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:08,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:54:08,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:54:08,993 INFO L87 Difference]: Start difference. First operand 4034 states and 5850 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:09,341 INFO L93 Difference]: Finished difference Result 12374 states and 17916 transitions. [2021-11-05 15:54:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 15:54:09,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 50 [2021-11-05 15:54:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:09,358 INFO L225 Difference]: With dead ends: 12374 [2021-11-05 15:54:09,358 INFO L226 Difference]: Without dead ends: 8346 [2021-11-05 15:54:09,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.79ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 15:54:09,367 INFO L933 BasicCegarLoop]: 3429 mSDtfsCounter, 4223 mSDsluCounter, 5871 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4223 SdHoareTripleChecker+Valid, 9300 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.55ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.21ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:09,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4223 Valid, 9300 Invalid, 74 Unknown, 0 Unchecked, 7.55ms Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 66.21ms Time] [2021-11-05 15:54:09,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8346 states. [2021-11-05 15:54:09,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8346 to 4035. [2021-11-05 15:54:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4035 states, 4029 states have (on average 1.4519731943410275) internal successors, (5850), 4034 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 5850 transitions. [2021-11-05 15:54:09,598 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 5850 transitions. Word has length 50 [2021-11-05 15:54:09,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:09,598 INFO L470 AbstractCegarLoop]: Abstraction has 4035 states and 5850 transitions. [2021-11-05 15:54:09,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 5850 transitions. [2021-11-05 15:54:09,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 15:54:09,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:09,602 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:09,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 15:54:09,602 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:09,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:09,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1224280972, now seen corresponding path program 1 times [2021-11-05 15:54:09,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:09,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524189962] [2021-11-05 15:54:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:09,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 15:54:09,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:09,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524189962] [2021-11-05 15:54:09,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524189962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:09,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:09,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 15:54:09,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052074560] [2021-11-05 15:54:09,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:09,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 15:54:09,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 15:54:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:54:09,697 INFO L87 Difference]: Start difference. First operand 4035 states and 5850 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:10,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:10,001 INFO L93 Difference]: Finished difference Result 8288 states and 11997 transitions. [2021-11-05 15:54:10,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 15:54:10,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 66 [2021-11-05 15:54:10,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:10,009 INFO L225 Difference]: With dead ends: 8288 [2021-11-05 15:54:10,009 INFO L226 Difference]: Without dead ends: 4242 [2021-11-05 15:54:10,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 103.89ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-05 15:54:10,015 INFO L933 BasicCegarLoop]: 2204 mSDtfsCounter, 459 mSDsluCounter, 10550 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 12754 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.31ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.39ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:10,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 12754 Invalid, 90 Unknown, 0 Unchecked, 5.31ms Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 70.39ms Time] [2021-11-05 15:54:10,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4242 states. [2021-11-05 15:54:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4242 to 4027. [2021-11-05 15:54:10,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 4021 states have (on average 1.45162894802288) internal successors, (5837), 4026 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 5837 transitions. [2021-11-05 15:54:10,159 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 5837 transitions. Word has length 66 [2021-11-05 15:54:10,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:10,159 INFO L470 AbstractCegarLoop]: Abstraction has 4027 states and 5837 transitions. [2021-11-05 15:54:10,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 5837 transitions. [2021-11-05 15:54:10,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 15:54:10,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:10,164 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:10,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 15:54:10,164 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:10,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1634615129, now seen corresponding path program 1 times [2021-11-05 15:54:10,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:10,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666997299] [2021-11-05 15:54:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:10,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 15:54:10,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:10,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666997299] [2021-11-05 15:54:10,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666997299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:10,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:10,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:54:10,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995968438] [2021-11-05 15:54:10,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:10,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:54:10,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:10,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:54:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:10,211 INFO L87 Difference]: Start difference. First operand 4027 states and 5837 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:10,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:10,479 INFO L93 Difference]: Finished difference Result 8080 states and 11700 transitions. [2021-11-05 15:54:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:54:10,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 90 [2021-11-05 15:54:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:10,486 INFO L225 Difference]: With dead ends: 8080 [2021-11-05 15:54:10,486 INFO L226 Difference]: Without dead ends: 4059 [2021-11-05 15:54:10,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:10,490 INFO L933 BasicCegarLoop]: 1726 mSDtfsCounter, 0 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.93ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.39ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:10,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3376 Invalid, 173 Unknown, 0 Unchecked, 1.93ms Time], IncrementalHoareTripleChecker [75 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 107.39ms Time] [2021-11-05 15:54:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2021-11-05 15:54:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 4027. [2021-11-05 15:54:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 4021 states have (on average 1.4277542899776174) internal successors, (5741), 4026 states have internal predecessors, (5741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:10,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 5741 transitions. [2021-11-05 15:54:10,664 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 5741 transitions. Word has length 90 [2021-11-05 15:54:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:10,664 INFO L470 AbstractCegarLoop]: Abstraction has 4027 states and 5741 transitions. [2021-11-05 15:54:10,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 5741 transitions. [2021-11-05 15:54:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 15:54:10,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:10,671 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:10,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 15:54:10,672 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:10,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash 500675232, now seen corresponding path program 1 times [2021-11-05 15:54:10,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:10,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487538038] [2021-11-05 15:54:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:10,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 15:54:10,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:10,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487538038] [2021-11-05 15:54:10,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487538038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:10,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:10,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:54:10,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097253476] [2021-11-05 15:54:10,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:10,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:54:10,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:10,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:54:10,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:54:10,770 INFO L87 Difference]: Start difference. First operand 4027 states and 5741 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:11,245 INFO L93 Difference]: Finished difference Result 11521 states and 16435 transitions. [2021-11-05 15:54:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 15:54:11,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 93 [2021-11-05 15:54:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:11,264 INFO L225 Difference]: With dead ends: 11521 [2021-11-05 15:54:11,264 INFO L226 Difference]: Without dead ends: 11335 [2021-11-05 15:54:11,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.09ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 15:54:11,269 INFO L933 BasicCegarLoop]: 3320 mSDtfsCounter, 4988 mSDsluCounter, 8394 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4988 SdHoareTripleChecker+Valid, 11714 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.92ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.45ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:11,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4988 Valid, 11714 Invalid, 53 Unknown, 0 Unchecked, 8.92ms Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 61.45ms Time] [2021-11-05 15:54:11,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11335 states. [2021-11-05 15:54:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11335 to 3841. [2021-11-05 15:54:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3841 states, 3836 states have (on average 1.4290928050052139) internal successors, (5482), 3840 states have internal predecessors, (5482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 5482 transitions. [2021-11-05 15:54:11,505 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 5482 transitions. Word has length 93 [2021-11-05 15:54:11,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:11,505 INFO L470 AbstractCegarLoop]: Abstraction has 3841 states and 5482 transitions. [2021-11-05 15:54:11,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 5482 transitions. [2021-11-05 15:54:11,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 15:54:11,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:11,509 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:11,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 15:54:11,510 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:11,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:11,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1207829173, now seen corresponding path program 1 times [2021-11-05 15:54:11,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:11,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705675198] [2021-11-05 15:54:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:11,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 15:54:11,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:11,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705675198] [2021-11-05 15:54:11,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705675198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:11,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:11,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 15:54:11,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916637402] [2021-11-05 15:54:11,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:11,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 15:54:11,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:11,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 15:54:11,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:54:11,590 INFO L87 Difference]: Start difference. First operand 3841 states and 5482 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:12,607 INFO L93 Difference]: Finished difference Result 19022 states and 27140 transitions. [2021-11-05 15:54:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 15:54:12,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 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 95 [2021-11-05 15:54:12,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:12,639 INFO L225 Difference]: With dead ends: 19022 [2021-11-05 15:54:12,639 INFO L226 Difference]: Without dead ends: 19015 [2021-11-05 15:54:12,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 111.83ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-11-05 15:54:12,646 INFO L933 BasicCegarLoop]: 6340 mSDtfsCounter, 9031 mSDsluCounter, 16628 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9031 SdHoareTripleChecker+Valid, 22968 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.05ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.76ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:12,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9031 Valid, 22968 Invalid, 159 Unknown, 0 Unchecked, 20.05ms Time], IncrementalHoareTripleChecker [9 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 120.76ms Time] [2021-11-05 15:54:12,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19015 states. [2021-11-05 15:54:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19015 to 3841. [2021-11-05 15:54:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3841 states, 3836 states have (on average 1.4288321167883211) internal successors, (5481), 3840 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:12,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 5481 transitions. [2021-11-05 15:54:12,913 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 5481 transitions. Word has length 95 [2021-11-05 15:54:12,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:12,914 INFO L470 AbstractCegarLoop]: Abstraction has 3841 states and 5481 transitions. [2021-11-05 15:54:12,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:12,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 5481 transitions. [2021-11-05 15:54:12,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 15:54:12,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:12,919 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:12,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 15:54:12,919 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:12,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:12,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1817524878, now seen corresponding path program 1 times [2021-11-05 15:54:12,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:12,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696202519] [2021-11-05 15:54:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:12,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 15:54:12,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:12,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696202519] [2021-11-05 15:54:12,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696202519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:12,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:12,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 15:54:12,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901500676] [2021-11-05 15:54:12,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:12,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 15:54:12,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:12,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 15:54:12,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 15:54:12,982 INFO L87 Difference]: Start difference. First operand 3841 states and 5481 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:13,225 INFO L93 Difference]: Finished difference Result 8487 states and 12118 transitions. [2021-11-05 15:54:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 15:54:13,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 97 [2021-11-05 15:54:13,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:13,232 INFO L225 Difference]: With dead ends: 8487 [2021-11-05 15:54:13,233 INFO L226 Difference]: Without dead ends: 4652 [2021-11-05 15:54:13,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.02ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 15:54:13,238 INFO L933 BasicCegarLoop]: 2889 mSDtfsCounter, 1437 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 6036 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.33ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.50ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:13,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 6036 Invalid, 37 Unknown, 0 Unchecked, 3.33ms Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 40.50ms Time] [2021-11-05 15:54:13,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2021-11-05 15:54:13,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 4641. [2021-11-05 15:54:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4641 states, 4637 states have (on average 1.4291567824024154) internal successors, (6627), 4640 states have internal predecessors, (6627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 6627 transitions. [2021-11-05 15:54:13,492 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 6627 transitions. Word has length 97 [2021-11-05 15:54:13,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:13,492 INFO L470 AbstractCegarLoop]: Abstraction has 4641 states and 6627 transitions. [2021-11-05 15:54:13,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:13,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 6627 transitions. [2021-11-05 15:54:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-05 15:54:13,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:13,498 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:13,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 15:54:13,498 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:13,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:13,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1654482286, now seen corresponding path program 1 times [2021-11-05 15:54:13,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:13,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606478067] [2021-11-05 15:54:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:13,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-05 15:54:13,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:13,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606478067] [2021-11-05 15:54:13,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606478067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:13,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:13,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 15:54:13,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685995243] [2021-11-05 15:54:13,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:13,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 15:54:13,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:13,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 15:54:13,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:54:13,633 INFO L87 Difference]: Start difference. First operand 4641 states and 6627 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:15,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:15,061 INFO L93 Difference]: Finished difference Result 22368 states and 32047 transitions. [2021-11-05 15:54:15,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 15:54:15,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 102 [2021-11-05 15:54:15,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:15,091 INFO L225 Difference]: With dead ends: 22368 [2021-11-05 15:54:15,091 INFO L226 Difference]: Without dead ends: 17728 [2021-11-05 15:54:15,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 97.13ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-05 15:54:15,102 INFO L933 BasicCegarLoop]: 3391 mSDtfsCounter, 13217 mSDsluCounter, 16463 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13217 SdHoareTripleChecker+Valid, 19854 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.95ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.42ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:15,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13217 Valid, 19854 Invalid, 186 Unknown, 0 Unchecked, 21.95ms Time], IncrementalHoareTripleChecker [16 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 180.42ms Time] [2021-11-05 15:54:15,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17728 states. [2021-11-05 15:54:15,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17728 to 4646. [2021-11-05 15:54:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4646 states, 4642 states have (on average 1.4284791038345541) internal successors, (6631), 4645 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 6631 transitions. [2021-11-05 15:54:15,437 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 6631 transitions. Word has length 102 [2021-11-05 15:54:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:15,437 INFO L470 AbstractCegarLoop]: Abstraction has 4646 states and 6631 transitions. [2021-11-05 15:54:15,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 6631 transitions. [2021-11-05 15:54:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-05 15:54:15,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:15,442 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:15,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 15:54:15,443 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:15,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:15,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1534575184, now seen corresponding path program 1 times [2021-11-05 15:54:15,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:15,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740540690] [2021-11-05 15:54:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:15,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 15:54:15,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:15,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740540690] [2021-11-05 15:54:15,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740540690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:15,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:15,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 15:54:15,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937892356] [2021-11-05 15:54:15,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:15,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 15:54:15,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:15,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 15:54:15,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 15:54:15,555 INFO L87 Difference]: Start difference. First operand 4646 states and 6631 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:17,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:17,310 INFO L93 Difference]: Finished difference Result 21334 states and 30275 transitions. [2021-11-05 15:54:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 15:54:17,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 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 105 [2021-11-05 15:54:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:17,336 INFO L225 Difference]: With dead ends: 21334 [2021-11-05 15:54:17,336 INFO L226 Difference]: Without dead ends: 16694 [2021-11-05 15:54:17,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 108.35ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-05 15:54:17,345 INFO L933 BasicCegarLoop]: 3404 mSDtfsCounter, 8417 mSDsluCounter, 8521 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 377.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8417 SdHoareTripleChecker+Valid, 11925 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.45ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 502.08ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:17,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8417 Valid, 11925 Invalid, 414 Unknown, 0 Unchecked, 15.45ms Time], IncrementalHoareTripleChecker [74 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 502.08ms Time] [2021-11-05 15:54:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16694 states. [2021-11-05 15:54:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 4664. [2021-11-05 15:54:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4664 states, 4660 states have (on average 1.426824034334764) internal successors, (6649), 4663 states have internal predecessors, (6649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 6649 transitions. [2021-11-05 15:54:17,738 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 6649 transitions. Word has length 105 [2021-11-05 15:54:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:17,738 INFO L470 AbstractCegarLoop]: Abstraction has 4664 states and 6649 transitions. [2021-11-05 15:54:17,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 6649 transitions. [2021-11-05 15:54:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-05 15:54:17,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:17,744 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:17,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 15:54:17,744 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:17,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1239516634, now seen corresponding path program 1 times [2021-11-05 15:54:17,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:17,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403931212] [2021-11-05 15:54:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:17,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 15:54:17,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:17,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403931212] [2021-11-05 15:54:17,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403931212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:17,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:17,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:54:17,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656223944] [2021-11-05 15:54:17,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:17,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:54:17,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:17,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:54:17,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:17,813 INFO L87 Difference]: Start difference. First operand 4664 states and 6649 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:18,416 INFO L93 Difference]: Finished difference Result 9366 states and 13336 transitions. [2021-11-05 15:54:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:54:18,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 109 [2021-11-05 15:54:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:18,422 INFO L225 Difference]: With dead ends: 9366 [2021-11-05 15:54:18,422 INFO L226 Difference]: Without dead ends: 4708 [2021-11-05 15:54:18,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:54:18,427 INFO L933 BasicCegarLoop]: 1652 mSDtfsCounter, 0 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 236.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 271.43ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:18,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3180 Invalid, 284 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [124 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 271.43ms Time] [2021-11-05 15:54:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2021-11-05 15:54:18,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 4664. [2021-11-05 15:54:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4664 states, 4660 states have (on average 1.3984978540772532) internal successors, (6517), 4663 states have internal predecessors, (6517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 6517 transitions. [2021-11-05 15:54:18,742 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 6517 transitions. Word has length 109 [2021-11-05 15:54:18,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:18,742 INFO L470 AbstractCegarLoop]: Abstraction has 4664 states and 6517 transitions. [2021-11-05 15:54:18,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 6517 transitions. [2021-11-05 15:54:18,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-05 15:54:18,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:54:18,747 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:54:18,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 15:54:18,748 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:54:18,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:54:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1828309856, now seen corresponding path program 1 times [2021-11-05 15:54:18,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:54:18,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609129445] [2021-11-05 15:54:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:54:18,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:54:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:54:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 15:54:18,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:54:18,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609129445] [2021-11-05 15:54:18,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609129445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:54:18,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:54:18,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:54:18,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509414704] [2021-11-05 15:54:18,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:54:18,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:54:18,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:54:18,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:54:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:54:18,888 INFO L87 Difference]: Start difference. First operand 4664 states and 6517 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:54:19,697 INFO L93 Difference]: Finished difference Result 9402 states and 13139 transitions. [2021-11-05 15:54:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 15:54:19,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-05 15:54:19,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:54:19,698 INFO L225 Difference]: With dead ends: 9402 [2021-11-05 15:54:19,698 INFO L226 Difference]: Without dead ends: 0 [2021-11-05 15:54:19,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.09ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:54:19,707 INFO L933 BasicCegarLoop]: 3197 mSDtfsCounter, 3685 mSDsluCounter, 4798 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 7995 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.49ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.82ms IncrementalHoareTripleChecker+Time [2021-11-05 15:54:19,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3685 Valid, 7995 Invalid, 53 Unknown, 0 Unchecked, 7.49ms Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 62.82ms Time] [2021-11-05 15:54:19,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-05 15:54:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-05 15:54:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-05 15:54:19,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2021-11-05 15:54:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:54:19,709 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-05 15:54:19,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:54:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-05 15:54:19,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-05 15:54:19,711 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2021-11-05 15:54:19,712 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2021-11-05 15:54:19,712 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2021-11-05 15:54:19,712 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2021-11-05 15:54:19,712 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2021-11-05 15:54:19,712 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2021-11-05 15:54:19,713 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2021-11-05 15:54:19,713 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2021-11-05 15:54:19,713 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2021-11-05 15:54:19,713 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2021-11-05 15:54:19,713 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2021-11-05 15:54:19,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 15:54:19,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-05 15:59:55,502 WARN L230 SmtUtils]: Spent 5.41m on a formula simplification that was a NOOP. DAG size: 121 Killed by 15