./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 96a9bd06c2a0348ab1a93991deedda2ae571d70e4f7fb0e32175d69384f432c0 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 18:13:31,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 18:13:31,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 18:13:31,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 18:13:31,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 18:13:31,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 18:13:31,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 18:13:31,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 18:13:31,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 18:13:31,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 18:13:31,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 18:13:31,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 18:13:31,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 18:13:31,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 18:13:31,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 18:13:31,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 18:13:31,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 18:13:31,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 18:13:31,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 18:13:31,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 18:13:31,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 18:13:31,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 18:13:31,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 18:13:31,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 18:13:31,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 18:13:31,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 18:13:31,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 18:13:31,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 18:13:31,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 18:13:31,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 18:13:31,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 18:13:31,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 18:13:31,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 18:13:31,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 18:13:31,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 18:13:31,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 18:13:31,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 18:13:31,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 18:13:31,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 18:13:31,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 18:13:31,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 18:13:31,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 18:13:31,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 18:13:31,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 18:13:31,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 18:13:31,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 18:13:31,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 18:13:31,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 18:13:31,505 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 18:13:31,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 18:13:31,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 18:13:31,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 18:13:31,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 18:13:31,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 18:13:31,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 18:13:31,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 18:13:31,507 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 18:13:31,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 18:13:31,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 18:13:31,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 18:13:31,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 18:13:31,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:13:31,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 18:13:31,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 18:13:31,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 18:13:31,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 18:13:31,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 18:13:31,508 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 18:13:31,509 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 18:13:31,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 18:13:31,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 18:13:31,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96a9bd06c2a0348ab1a93991deedda2ae571d70e4f7fb0e32175d69384f432c0 [2021-11-05 18:13:31,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 18:13:31,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 18:13:31,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 18:13:31,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 18:13:31,803 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 18:13:31,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i [2021-11-05 18:13:31,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1db83f83/ee32a904f15243c4a3f88b4f66872b94/FLAG4fe5431df [2021-11-05 18:13:32,419 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 18:13:32,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i [2021-11-05 18:13:32,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1db83f83/ee32a904f15243c4a3f88b4f66872b94/FLAG4fe5431df [2021-11-05 18:13:32,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1db83f83/ee32a904f15243c4a3f88b4f66872b94 [2021-11-05 18:13:32,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 18:13:32,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 18:13:32,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 18:13:32,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 18:13:32,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 18:13:32,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:13:32" (1/1) ... [2021-11-05 18:13:32,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c13f649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:32, skipping insertion in model container [2021-11-05 18:13:32,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:13:32" (1/1) ... [2021-11-05 18:13:32,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 18:13:32,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 18:13:33,458 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i[147706,147719] [2021-11-05 18:13:33,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:13:33,582 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 18:13:33,786 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i[147706,147719] [2021-11-05 18:13:33,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:13:33,860 INFO L208 MainTranslator]: Completed translation [2021-11-05 18:13:33,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33 WrapperNode [2021-11-05 18:13:33,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 18:13:33,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 18:13:33,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 18:13:33,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 18:13:33,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33" (1/1) ... [2021-11-05 18:13:33,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33" (1/1) ... [2021-11-05 18:13:34,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 18:13:34,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 18:13:34,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 18:13:34,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 18:13:34,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33" (1/1) ... [2021-11-05 18:13:34,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33" (1/1) ... [2021-11-05 18:13:34,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33" (1/1) ... [2021-11-05 18:13:34,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33" (1/1) ... [2021-11-05 18:13:34,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33" (1/1) ... [2021-11-05 18:13:34,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33" (1/1) ... [2021-11-05 18:13:34,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33" (1/1) ... [2021-11-05 18:13:34,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 18:13:34,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 18:13:34,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 18:13:34,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 18:13:34,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33" (1/1) ... [2021-11-05 18:13:34,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:13:34,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:13:34,342 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 18:13:34,365 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 18:13:34,381 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-05 18:13:34,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 18:13:34,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 18:13:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 18:13:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 18:13:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 18:13:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 18:13:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 18:13:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-05 18:13:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 18:13:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 18:13:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 18:13:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 18:13:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 18:13:36,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 18:13:36,961 INFO L299 CfgBuilder]: Removed 1183 assume(true) statements. [2021-11-05 18:13:36,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:13:36 BoogieIcfgContainer [2021-11-05 18:13:36,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 18:13:36,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 18:13:36,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 18:13:36,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 18:13:36,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 06:13:32" (1/3) ... [2021-11-05 18:13:36,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ad6d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:13:36, skipping insertion in model container [2021-11-05 18:13:36,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:13:33" (2/3) ... [2021-11-05 18:13:36,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ad6d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:13:36, skipping insertion in model container [2021-11-05 18:13:36,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:13:36" (3/3) ... [2021-11-05 18:13:36,968 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--char--lp.ko-entry_point.cil.out.i [2021-11-05 18:13:36,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 18:13:36,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-11-05 18:13:37,003 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 18:13:37,007 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 18:13:37,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-11-05 18:13:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 1215 states, 1193 states have (on average 1.4283319362950544) internal successors, (1704), 1214 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states 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 18:13:37,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 18:13:37,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:37,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:37,036 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash -921687816, now seen corresponding path program 1 times [2021-11-05 18:13:37,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:37,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18768138] [2021-11-05 18:13:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:37,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:37,399 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 18:13:37,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:37,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18768138] [2021-11-05 18:13:37,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18768138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:37,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:37,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:13:37,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563988457] [2021-11-05 18:13:37,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:37,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 18:13:37,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:37,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 18:13:37,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:13:37,423 INFO L87 Difference]: Start difference. First operand has 1215 states, 1193 states have (on average 1.4283319362950544) internal successors, (1704), 1214 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:13:37,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:37,493 INFO L93 Difference]: Finished difference Result 2426 states and 3403 transitions. [2021-11-05 18:13:37,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 18:13:37,494 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-05 18:13:37,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:37,509 INFO L225 Difference]: With dead ends: 2426 [2021-11-05 18:13:37,509 INFO L226 Difference]: Without dead ends: 1206 [2021-11-05 18:13:37,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:13:37,517 INFO L933 BasicCegarLoop]: 1666 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:37,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 6.75ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 18:13:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2021-11-05 18:13:37,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1206. [2021-11-05 18:13:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1185 states have (on average 1.3940928270042194) internal successors, (1652), 1205 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states 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 18:13:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1652 transitions. [2021-11-05 18:13:37,573 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1652 transitions. Word has length 68 [2021-11-05 18:13:37,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:37,573 INFO L470 AbstractCegarLoop]: Abstraction has 1206 states and 1652 transitions. [2021-11-05 18:13:37,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:13:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1652 transitions. [2021-11-05 18:13:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 18:13:37,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:37,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:37,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 18:13:37,576 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:37,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:37,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1043006210, now seen corresponding path program 1 times [2021-11-05 18:13:37,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:37,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117882723] [2021-11-05 18:13:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:37,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:37,706 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 18:13:37,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:37,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117882723] [2021-11-05 18:13:37,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117882723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:37,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:37,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:13:37,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163795679] [2021-11-05 18:13:37,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:37,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:37,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:37,709 INFO L87 Difference]: Start difference. First operand 1206 states and 1652 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:13:37,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:37,801 INFO L93 Difference]: Finished difference Result 2553 states and 3512 transitions. [2021-11-05 18:13:37,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:37,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-05 18:13:37,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:37,808 INFO L225 Difference]: With dead ends: 2553 [2021-11-05 18:13:37,808 INFO L226 Difference]: Without dead ends: 1401 [2021-11-05 18:13:37,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:37,814 INFO L933 BasicCegarLoop]: 1651 mSDtfsCounter, 335 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.02ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.77ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:37,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 3201 Invalid, 32 Unknown, 0 Unchecked, 7.02ms Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 56.77ms Time] [2021-11-05 18:13:37,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-11-05 18:13:37,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1376. [2021-11-05 18:13:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1355 states have (on average 1.4) internal successors, (1897), 1375 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states 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 18:13:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1897 transitions. [2021-11-05 18:13:37,842 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1897 transitions. Word has length 68 [2021-11-05 18:13:37,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:37,842 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 1897 transitions. [2021-11-05 18:13:37,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:13:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1897 transitions. [2021-11-05 18:13:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 18:13:37,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:37,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:37,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 18:13:37,845 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash -227303090, now seen corresponding path program 1 times [2021-11-05 18:13:37,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:37,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901491589] [2021-11-05 18:13:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:37,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:37,967 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 18:13:37,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:37,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901491589] [2021-11-05 18:13:37,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901491589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:37,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:37,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:13:37,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242280983] [2021-11-05 18:13:37,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:37,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:37,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:37,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:37,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:37,969 INFO L87 Difference]: Start difference. First operand 1376 states and 1897 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:13:38,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:38,444 INFO L93 Difference]: Finished difference Result 3917 states and 5439 transitions. [2021-11-05 18:13:38,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:38,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-05 18:13:38,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:38,453 INFO L225 Difference]: With dead ends: 3917 [2021-11-05 18:13:38,453 INFO L226 Difference]: Without dead ends: 2595 [2021-11-05 18:13:38,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:38,455 INFO L933 BasicCegarLoop]: 1649 mSDtfsCounter, 1549 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 401.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 428.02ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:38,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 3222 Invalid, 15 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 428.02ms Time] [2021-11-05 18:13:38,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2021-11-05 18:13:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2563. [2021-11-05 18:13:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2542 states have (on average 1.4095200629425648) internal successors, (3583), 2562 states have internal predecessors, (3583), 0 states have call successors, (0), 0 states 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 18:13:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3583 transitions. [2021-11-05 18:13:38,504 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3583 transitions. Word has length 68 [2021-11-05 18:13:38,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:38,504 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 3583 transitions. [2021-11-05 18:13:38,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:13:38,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3583 transitions. [2021-11-05 18:13:38,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-05 18:13:38,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:38,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:38,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 18:13:38,507 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:38,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:38,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1586812280, now seen corresponding path program 1 times [2021-11-05 18:13:38,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:38,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047572164] [2021-11-05 18:13:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:38,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:38,636 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 18:13:38,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:38,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047572164] [2021-11-05 18:13:38,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047572164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:38,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:38,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:13:38,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710886981] [2021-11-05 18:13:38,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:38,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:13:38,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:38,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:13:38,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:38,639 INFO L87 Difference]: Start difference. First operand 2563 states and 3583 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:13:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:38,905 INFO L93 Difference]: Finished difference Result 8825 states and 12349 transitions. [2021-11-05 18:13:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 18:13:38,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-05 18:13:38,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:38,925 INFO L225 Difference]: With dead ends: 8825 [2021-11-05 18:13:38,925 INFO L226 Difference]: Without dead ends: 6316 [2021-11-05 18:13:38,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.12ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 18:13:38,930 INFO L933 BasicCegarLoop]: 3166 mSDtfsCounter, 6261 mSDsluCounter, 4901 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6261 SdHoareTripleChecker+Valid, 8067 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.38ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.68ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:38,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6261 Valid, 8067 Invalid, 33 Unknown, 0 Unchecked, 16.38ms Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 35.68ms Time] [2021-11-05 18:13:38,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6316 states. [2021-11-05 18:13:39,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6316 to 2569. [2021-11-05 18:13:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2569 states, 2548 states have (on average 1.4077708006279435) internal successors, (3587), 2568 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states 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 18:13:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3587 transitions. [2021-11-05 18:13:39,025 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3587 transitions. Word has length 70 [2021-11-05 18:13:39,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:39,026 INFO L470 AbstractCegarLoop]: Abstraction has 2569 states and 3587 transitions. [2021-11-05 18:13:39,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:13:39,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3587 transitions. [2021-11-05 18:13:39,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 18:13:39,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:39,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:39,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 18:13:39,028 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:39,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash 277133400, now seen corresponding path program 1 times [2021-11-05 18:13:39,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:39,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536049473] [2021-11-05 18:13:39,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:39,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:39,160 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 18:13:39,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:39,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536049473] [2021-11-05 18:13:39,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536049473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:39,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:39,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:13:39,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196225267] [2021-11-05 18:13:39,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:39,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:39,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:39,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:39,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:39,162 INFO L87 Difference]: Start difference. First operand 2569 states and 3587 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 18:13:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:39,217 INFO L93 Difference]: Finished difference Result 2569 states and 3587 transitions. [2021-11-05 18:13:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:39,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-05 18:13:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:39,225 INFO L225 Difference]: With dead ends: 2569 [2021-11-05 18:13:39,225 INFO L226 Difference]: Without dead ends: 2567 [2021-11-05 18:13:39,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:39,226 INFO L933 BasicCegarLoop]: 1649 mSDtfsCounter, 1577 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.60ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:39,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 1649 Invalid, 1 Unknown, 0 Unchecked, 2.37ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 4.60ms Time] [2021-11-05 18:13:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-11-05 18:13:39,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2567. [2021-11-05 18:13:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2567 states, 2547 states have (on average 1.4075382803297998) internal successors, (3585), 2566 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states 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 18:13:39,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 3585 transitions. [2021-11-05 18:13:39,291 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 3585 transitions. Word has length 75 [2021-11-05 18:13:39,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:39,292 INFO L470 AbstractCegarLoop]: Abstraction has 2567 states and 3585 transitions. [2021-11-05 18:13:39,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 18:13:39,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 3585 transitions. [2021-11-05 18:13:39,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 18:13:39,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:39,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:39,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 18:13:39,294 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:39,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1210867, now seen corresponding path program 1 times [2021-11-05 18:13:39,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:39,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632722102] [2021-11-05 18:13:39,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:39,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:39,382 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 18:13:39,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:39,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632722102] [2021-11-05 18:13:39,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632722102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:39,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:39,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:13:39,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745347993] [2021-11-05 18:13:39,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:39,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:39,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:39,387 INFO L87 Difference]: Start difference. First operand 2567 states and 3585 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 18:13:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:39,442 INFO L93 Difference]: Finished difference Result 2567 states and 3585 transitions. [2021-11-05 18:13:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:39,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-05 18:13:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:39,449 INFO L225 Difference]: With dead ends: 2567 [2021-11-05 18:13:39,449 INFO L226 Difference]: Without dead ends: 2565 [2021-11-05 18:13:39,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:39,452 INFO L933 BasicCegarLoop]: 1647 mSDtfsCounter, 1574 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.42ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.69ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:39,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1574 Valid, 1647 Invalid, 1 Unknown, 0 Unchecked, 2.42ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.69ms Time] [2021-11-05 18:13:39,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2021-11-05 18:13:39,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2565. [2021-11-05 18:13:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2546 states have (on average 1.4073055773762766) internal successors, (3583), 2564 states have internal predecessors, (3583), 0 states have call successors, (0), 0 states 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 18:13:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3583 transitions. [2021-11-05 18:13:39,534 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3583 transitions. Word has length 76 [2021-11-05 18:13:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:39,534 INFO L470 AbstractCegarLoop]: Abstraction has 2565 states and 3583 transitions. [2021-11-05 18:13:39,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 18:13:39,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3583 transitions. [2021-11-05 18:13:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 18:13:39,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:39,537 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:39,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 18:13:39,538 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash 37546946, now seen corresponding path program 1 times [2021-11-05 18:13:39,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:39,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745485496] [2021-11-05 18:13:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:39,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:39,627 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 18:13:39,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:39,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745485496] [2021-11-05 18:13:39,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745485496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:39,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:39,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:13:39,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258603839] [2021-11-05 18:13:39,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:39,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:39,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:39,629 INFO L87 Difference]: Start difference. First operand 2565 states and 3583 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 18:13:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:39,720 INFO L93 Difference]: Finished difference Result 2565 states and 3583 transitions. [2021-11-05 18:13:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:39,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-05 18:13:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:39,727 INFO L225 Difference]: With dead ends: 2565 [2021-11-05 18:13:39,727 INFO L226 Difference]: Without dead ends: 2557 [2021-11-05 18:13:39,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:39,729 INFO L933 BasicCegarLoop]: 1636 mSDtfsCounter, 1216 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.60ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.80ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:39,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 1973 Invalid, 19 Unknown, 0 Unchecked, 2.60ms Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 13.80ms Time] [2021-11-05 18:13:39,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2021-11-05 18:13:39,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2557. [2021-11-05 18:13:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2542 states have (on average 1.4051927616050355) internal successors, (3572), 2556 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states 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 18:13:39,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3572 transitions. [2021-11-05 18:13:39,797 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3572 transitions. Word has length 77 [2021-11-05 18:13:39,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:39,797 INFO L470 AbstractCegarLoop]: Abstraction has 2557 states and 3572 transitions. [2021-11-05 18:13:39,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 18:13:39,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3572 transitions. [2021-11-05 18:13:39,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 18:13:39,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:39,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:39,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 18:13:39,799 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:39,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:39,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1163965405, now seen corresponding path program 1 times [2021-11-05 18:13:39,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:39,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940598588] [2021-11-05 18:13:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:39,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:39,882 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 18:13:39,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:39,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940598588] [2021-11-05 18:13:39,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940598588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:39,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:39,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:13:39,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724110526] [2021-11-05 18:13:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:39,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:39,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:39,884 INFO L87 Difference]: Start difference. First operand 2557 states and 3572 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 18:13:39,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:39,943 INFO L93 Difference]: Finished difference Result 2557 states and 3572 transitions. [2021-11-05 18:13:39,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:39,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-05 18:13:39,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:39,950 INFO L225 Difference]: With dead ends: 2557 [2021-11-05 18:13:39,950 INFO L226 Difference]: Without dead ends: 2555 [2021-11-05 18:13:39,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:39,951 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 1562 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.59ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:39,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 1637 Invalid, 1 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.59ms Time] [2021-11-05 18:13:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2021-11-05 18:13:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2555. [2021-11-05 18:13:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2555 states, 2541 states have (on average 1.4049586776859504) internal successors, (3570), 2554 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states 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 18:13:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2555 states to 2555 states and 3570 transitions. [2021-11-05 18:13:40,024 INFO L78 Accepts]: Start accepts. Automaton has 2555 states and 3570 transitions. Word has length 78 [2021-11-05 18:13:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:40,025 INFO L470 AbstractCegarLoop]: Abstraction has 2555 states and 3570 transitions. [2021-11-05 18:13:40,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 18:13:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2555 states and 3570 transitions. [2021-11-05 18:13:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 18:13:40,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:40,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:40,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 18:13:40,026 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:40,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1723199276, now seen corresponding path program 1 times [2021-11-05 18:13:40,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:40,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538977405] [2021-11-05 18:13:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:40,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:40,102 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 18:13:40,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:40,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538977405] [2021-11-05 18:13:40,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538977405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:40,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:40,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:13:40,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988618242] [2021-11-05 18:13:40,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:40,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:40,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:40,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:40,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:40,104 INFO L87 Difference]: Start difference. First operand 2555 states and 3570 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 18:13:40,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:40,285 INFO L93 Difference]: Finished difference Result 7457 states and 10472 transitions. [2021-11-05 18:13:40,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:40,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-05 18:13:40,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:40,298 INFO L225 Difference]: With dead ends: 7457 [2021-11-05 18:13:40,299 INFO L226 Difference]: Without dead ends: 4941 [2021-11-05 18:13:40,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:40,303 INFO L933 BasicCegarLoop]: 2443 mSDtfsCounter, 1534 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 3944 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.32ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.05ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:40,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 3944 Invalid, 51 Unknown, 0 Unchecked, 4.32ms Time], IncrementalHoareTripleChecker [20 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 30.05ms Time] [2021-11-05 18:13:40,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2021-11-05 18:13:40,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 4372. [2021-11-05 18:13:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 4358 states have (on average 1.406379072969252) internal successors, (6129), 4371 states have internal predecessors, (6129), 0 states have call successors, (0), 0 states 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 18:13:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 6129 transitions. [2021-11-05 18:13:40,434 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 6129 transitions. Word has length 79 [2021-11-05 18:13:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:40,434 INFO L470 AbstractCegarLoop]: Abstraction has 4372 states and 6129 transitions. [2021-11-05 18:13:40,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 18:13:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 6129 transitions. [2021-11-05 18:13:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-05 18:13:40,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:40,436 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:40,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 18:13:40,437 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:40,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:40,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1186138392, now seen corresponding path program 1 times [2021-11-05 18:13:40,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:40,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179540868] [2021-11-05 18:13:40,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:40,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:13:40,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:40,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179540868] [2021-11-05 18:13:40,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179540868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:40,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:40,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:13:40,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524910194] [2021-11-05 18:13:40,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:40,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:40,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:40,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:40,513 INFO L87 Difference]: Start difference. First operand 4372 states and 6129 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:13:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:40,766 INFO L93 Difference]: Finished difference Result 8700 states and 12207 transitions. [2021-11-05 18:13:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:40,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 18:13:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:40,776 INFO L225 Difference]: With dead ends: 8700 [2021-11-05 18:13:40,776 INFO L226 Difference]: Without dead ends: 4382 [2021-11-05 18:13:40,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:40,782 INFO L933 BasicCegarLoop]: 1633 mSDtfsCounter, 4 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3263 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.89ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:40,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3263 Invalid, 12 Unknown, 0 Unchecked, 3.27ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 94.89ms Time] [2021-11-05 18:13:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2021-11-05 18:13:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4374. [2021-11-05 18:13:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4360 states have (on average 1.4061926605504587) internal successors, (6131), 4373 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states 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 18:13:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 6131 transitions. [2021-11-05 18:13:40,934 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 6131 transitions. Word has length 102 [2021-11-05 18:13:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:40,934 INFO L470 AbstractCegarLoop]: Abstraction has 4374 states and 6131 transitions. [2021-11-05 18:13:40,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 18:13:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 6131 transitions. [2021-11-05 18:13:40,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-05 18:13:40,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:40,937 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:40,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 18:13:40,937 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:40,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1727901557, now seen corresponding path program 1 times [2021-11-05 18:13:40,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:40,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231269018] [2021-11-05 18:13:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:40,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:41,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:13:41,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:41,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231269018] [2021-11-05 18:13:41,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231269018] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:13:41,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481345854] [2021-11-05 18:13:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:41,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:13:41,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:13:41,063 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 18:13:41,068 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 18:13:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:41,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1975 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:13:41,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:13:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 18:13:41,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:13:41,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481345854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:41,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:13:41,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 18:13:41,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072404763] [2021-11-05 18:13:41,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:41,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:41,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:41,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:41,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:41,670 INFO L87 Difference]: Start difference. First operand 4374 states and 6131 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 18:13:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:42,081 INFO L93 Difference]: Finished difference Result 7078 states and 9910 transitions. [2021-11-05 18:13:42,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:42,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-11-05 18:13:42,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:42,102 INFO L225 Difference]: With dead ends: 7078 [2021-11-05 18:13:42,102 INFO L226 Difference]: Without dead ends: 2756 [2021-11-05 18:13:42,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.92ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:42,108 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 7 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 259.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 295.49ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:42,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 3275 Invalid, 5 Unknown, 0 Unchecked, 2.84ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 295.49ms Time] [2021-11-05 18:13:42,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-11-05 18:13:42,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2742. [2021-11-05 18:13:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2742 states, 2728 states have (on average 1.4013929618768328) internal successors, (3823), 2741 states have internal predecessors, (3823), 0 states have call successors, (0), 0 states 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 18:13:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 3823 transitions. [2021-11-05 18:13:42,304 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 3823 transitions. Word has length 107 [2021-11-05 18:13:42,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:42,305 INFO L470 AbstractCegarLoop]: Abstraction has 2742 states and 3823 transitions. [2021-11-05 18:13:42,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 18:13:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 3823 transitions. [2021-11-05 18:13:42,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-05 18:13:42,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:42,306 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:42,343 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 18:13:42,506 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,SelfDestructingSolverStorable10 [2021-11-05 18:13:42,507 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:42,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1046594258, now seen corresponding path program 1 times [2021-11-05 18:13:42,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:42,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690923494] [2021-11-05 18:13:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:42,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:13:42,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:42,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690923494] [2021-11-05 18:13:42,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690923494] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:13:42,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349468678] [2021-11-05 18:13:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:42,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:13:42,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:13:42,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 18:13:42,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 18:13:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:43,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:13:43,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:13:43,251 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 18:13:43,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:13:43,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349468678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:43,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:13:43,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 18:13:43,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988517971] [2021-11-05 18:13:43,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:43,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:43,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:43,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:43,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:43,253 INFO L87 Difference]: Start difference. First operand 2742 states and 3823 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:13:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:43,698 INFO L93 Difference]: Finished difference Result 2742 states and 3823 transitions. [2021-11-05 18:13:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:43,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 111 [2021-11-05 18:13:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:43,702 INFO L225 Difference]: With dead ends: 2742 [2021-11-05 18:13:43,702 INFO L226 Difference]: Without dead ends: 2736 [2021-11-05 18:13:43,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.39ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:43,703 INFO L933 BasicCegarLoop]: 1629 mSDtfsCounter, 334 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 332.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.63ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 377.95ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:43,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2913 Invalid, 15 Unknown, 0 Unchecked, 2.63ms Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 377.95ms Time] [2021-11-05 18:13:43,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-11-05 18:13:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2736. [2021-11-05 18:13:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2725 states have (on average 1.3996330275229358) internal successors, (3814), 2735 states have internal predecessors, (3814), 0 states have call successors, (0), 0 states 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 18:13:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3814 transitions. [2021-11-05 18:13:43,771 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3814 transitions. Word has length 111 [2021-11-05 18:13:43,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:43,771 INFO L470 AbstractCegarLoop]: Abstraction has 2736 states and 3814 transitions. [2021-11-05 18:13:43,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 18:13:43,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3814 transitions. [2021-11-05 18:13:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-05 18:13:43,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:43,773 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:43,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 18:13:43,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-05 18:13:43,986 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:43,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2065458272, now seen corresponding path program 1 times [2021-11-05 18:13:43,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:43,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929953429] [2021-11-05 18:13:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:43,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:13:44,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:44,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929953429] [2021-11-05 18:13:44,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929953429] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:13:44,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371252142] [2021-11-05 18:13:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:44,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:13:44,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:13:44,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 18:13:44,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 18:13:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:44,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:13:44,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:13:44,686 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 18:13:44,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:13:44,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371252142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:44,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:13:44,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 18:13:44,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406638457] [2021-11-05 18:13:44,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:44,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:44,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:44,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:44,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:44,691 INFO L87 Difference]: Start difference. First operand 2736 states and 3814 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 18:13:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:45,079 INFO L93 Difference]: Finished difference Result 5268 states and 7352 transitions. [2021-11-05 18:13:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:45,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 121 [2021-11-05 18:13:45,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:45,084 INFO L225 Difference]: With dead ends: 5268 [2021-11-05 18:13:45,084 INFO L226 Difference]: Without dead ends: 2736 [2021-11-05 18:13:45,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.70ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:45,087 INFO L933 BasicCegarLoop]: 2281 mSDtfsCounter, 1491 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 264.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.86ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 291.55ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:45,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 3856 Invalid, 40 Unknown, 0 Unchecked, 3.86ms Time], IncrementalHoareTripleChecker [13 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 291.55ms Time] [2021-11-05 18:13:45,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-11-05 18:13:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2736. [2021-11-05 18:13:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2725 states have (on average 1.3959633027522935) internal successors, (3804), 2735 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states 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 18:13:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3804 transitions. [2021-11-05 18:13:45,149 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3804 transitions. Word has length 121 [2021-11-05 18:13:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:45,149 INFO L470 AbstractCegarLoop]: Abstraction has 2736 states and 3804 transitions. [2021-11-05 18:13:45,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 18:13:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3804 transitions. [2021-11-05 18:13:45,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-05 18:13:45,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:45,152 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:45,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 18:13:45,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:13:45,365 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:45,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:45,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1478652258, now seen corresponding path program 1 times [2021-11-05 18:13:45,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:45,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668893760] [2021-11-05 18:13:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:45,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:13:45,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:45,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668893760] [2021-11-05 18:13:45,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668893760] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:13:45,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186534742] [2021-11-05 18:13:45,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:45,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:13:45,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:13:45,484 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 18:13:45,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 18:13:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:45,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:13:45,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:13:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:13:46,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 18:13:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:13:46,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186534742] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 18:13:46,309 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 18:13:46,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 18:13:46,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950517932] [2021-11-05 18:13:46,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 18:13:46,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 18:13:46,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 18:13:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 18:13:46,311 INFO L87 Difference]: Start difference. First operand 2736 states and 3804 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:13:46,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:46,506 INFO L93 Difference]: Finished difference Result 5298 states and 7368 transitions. [2021-11-05 18:13:46,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 18:13:46,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 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 121 [2021-11-05 18:13:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:46,511 INFO L225 Difference]: With dead ends: 5298 [2021-11-05 18:13:46,511 INFO L226 Difference]: Without dead ends: 2766 [2021-11-05 18:13:46,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 12.73ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 18:13:46,514 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 16 mSDsluCounter, 4872 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 6499 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.82ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.17ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:46,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 6499 Invalid, 31 Unknown, 0 Unchecked, 3.82ms Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 122.17ms Time] [2021-11-05 18:13:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-11-05 18:13:46,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2766. [2021-11-05 18:13:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2755 states have (on average 1.3916515426497278) internal successors, (3834), 2765 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states 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 18:13:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3834 transitions. [2021-11-05 18:13:46,581 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3834 transitions. Word has length 121 [2021-11-05 18:13:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:46,581 INFO L470 AbstractCegarLoop]: Abstraction has 2766 states and 3834 transitions. [2021-11-05 18:13:46,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:13:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3834 transitions. [2021-11-05 18:13:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-05 18:13:46,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:46,584 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:46,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 18:13:46,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:13:46,799 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:46,800 INFO L85 PathProgramCache]: Analyzing trace with hash -818731281, now seen corresponding path program 2 times [2021-11-05 18:13:46,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:46,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949268807] [2021-11-05 18:13:46,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:46,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-05 18:13:46,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:46,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949268807] [2021-11-05 18:13:46,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949268807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:46,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:46,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:13:46,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518483594] [2021-11-05 18:13:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:46,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:13:46,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:46,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:13:46,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:46,900 INFO L87 Difference]: Start difference. First operand 2766 states and 3834 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:13:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:47,284 INFO L93 Difference]: Finished difference Result 5362 states and 7425 transitions. [2021-11-05 18:13:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 18:13:47,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 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 136 [2021-11-05 18:13:47,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:47,288 INFO L225 Difference]: With dead ends: 5362 [2021-11-05 18:13:47,288 INFO L226 Difference]: Without dead ends: 2793 [2021-11-05 18:13:47,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.41ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:13:47,291 INFO L933 BasicCegarLoop]: 1642 mSDtfsCounter, 34 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 262.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 6531 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.63ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 284.30ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:47,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 6531 Invalid, 26 Unknown, 0 Unchecked, 3.63ms Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 284.30ms Time] [2021-11-05 18:13:47,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2021-11-05 18:13:47,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2766. [2021-11-05 18:13:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2755 states have (on average 1.3901996370235934) internal successors, (3830), 2765 states have internal predecessors, (3830), 0 states have call successors, (0), 0 states 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 18:13:47,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3830 transitions. [2021-11-05 18:13:47,349 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3830 transitions. Word has length 136 [2021-11-05 18:13:47,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:47,349 INFO L470 AbstractCegarLoop]: Abstraction has 2766 states and 3830 transitions. [2021-11-05 18:13:47,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:13:47,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3830 transitions. [2021-11-05 18:13:47,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-05 18:13:47,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:47,351 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:47,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 18:13:47,352 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:47,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:47,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1374764229, now seen corresponding path program 1 times [2021-11-05 18:13:47,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:47,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721801614] [2021-11-05 18:13:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:47,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-05 18:13:47,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:47,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721801614] [2021-11-05 18:13:47,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721801614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:47,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:47,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:13:47,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535733375] [2021-11-05 18:13:47,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:47,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:13:47,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:47,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:13:47,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:47,449 INFO L87 Difference]: Start difference. First operand 2766 states and 3830 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:13:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:47,626 INFO L93 Difference]: Finished difference Result 5712 states and 7874 transitions. [2021-11-05 18:13:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 18:13:47,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 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 146 [2021-11-05 18:13:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:47,634 INFO L225 Difference]: With dead ends: 5712 [2021-11-05 18:13:47,634 INFO L226 Difference]: Without dead ends: 5260 [2021-11-05 18:13:47,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.73ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:13:47,636 INFO L933 BasicCegarLoop]: 2823 mSDtfsCounter, 4507 mSDsluCounter, 7315 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 10138 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.70ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.90ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:47,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4507 Valid, 10138 Invalid, 71 Unknown, 0 Unchecked, 8.70ms Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 41.90ms Time] [2021-11-05 18:13:47,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2021-11-05 18:13:47,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 2314. [2021-11-05 18:13:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2305 states have (on average 1.3787418655097614) internal successors, (3178), 2313 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states 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 18:13:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3178 transitions. [2021-11-05 18:13:47,706 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3178 transitions. Word has length 146 [2021-11-05 18:13:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:47,706 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 3178 transitions. [2021-11-05 18:13:47,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:13:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3178 transitions. [2021-11-05 18:13:47,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-05 18:13:47,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:47,709 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:47,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 18:13:47,709 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:47,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1083146945, now seen corresponding path program 1 times [2021-11-05 18:13:47,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:47,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397422604] [2021-11-05 18:13:47,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:47,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-05 18:13:47,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:47,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397422604] [2021-11-05 18:13:47,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397422604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:47,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:47,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:13:47,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231313992] [2021-11-05 18:13:47,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:47,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:13:47,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:13:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:47,835 INFO L87 Difference]: Start difference. First operand 2314 states and 3178 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 18:13:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:48,101 INFO L93 Difference]: Finished difference Result 5960 states and 8178 transitions. [2021-11-05 18:13:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 18:13:48,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-05 18:13:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:48,109 INFO L225 Difference]: With dead ends: 5960 [2021-11-05 18:13:48,109 INFO L226 Difference]: Without dead ends: 5258 [2021-11-05 18:13:48,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.40ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:13:48,112 INFO L933 BasicCegarLoop]: 3151 mSDtfsCounter, 6185 mSDsluCounter, 4963 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6185 SdHoareTripleChecker+Valid, 8114 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.22ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.11ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:48,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6185 Valid, 8114 Invalid, 74 Unknown, 0 Unchecked, 10.22ms Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 51.11ms Time] [2021-11-05 18:13:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2021-11-05 18:13:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 2312. [2021-11-05 18:13:48,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2303 states have (on average 1.3782023447676943) internal successors, (3174), 2311 states have internal predecessors, (3174), 0 states have call successors, (0), 0 states 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 18:13:48,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3174 transitions. [2021-11-05 18:13:48,206 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3174 transitions. Word has length 148 [2021-11-05 18:13:48,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:48,206 INFO L470 AbstractCegarLoop]: Abstraction has 2312 states and 3174 transitions. [2021-11-05 18:13:48,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 18:13:48,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3174 transitions. [2021-11-05 18:13:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-05 18:13:48,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:48,209 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:48,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 18:13:48,209 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:48,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:48,209 INFO L85 PathProgramCache]: Analyzing trace with hash 923668552, now seen corresponding path program 1 times [2021-11-05 18:13:48,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:48,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614902501] [2021-11-05 18:13:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:48,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-05 18:13:48,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:48,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614902501] [2021-11-05 18:13:48,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614902501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:48,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:48,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:13:48,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534876642] [2021-11-05 18:13:48,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:48,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:48,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:48,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:48,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:48,300 INFO L87 Difference]: Start difference. First operand 2312 states and 3174 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:13:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:48,611 INFO L93 Difference]: Finished difference Result 4852 states and 6680 transitions. [2021-11-05 18:13:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:48,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 158 [2021-11-05 18:13:48,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:48,615 INFO L225 Difference]: With dead ends: 4852 [2021-11-05 18:13:48,615 INFO L226 Difference]: Without dead ends: 2744 [2021-11-05 18:13:48,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:48,617 INFO L933 BasicCegarLoop]: 1880 mSDtfsCounter, 701 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.27ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 234.08ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:48,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 3023 Invalid, 48 Unknown, 0 Unchecked, 2.27ms Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 234.08ms Time] [2021-11-05 18:13:48,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2021-11-05 18:13:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2685. [2021-11-05 18:13:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2685 states, 2676 states have (on average 1.3845291479820627) internal successors, (3705), 2684 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states 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 18:13:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 3705 transitions. [2021-11-05 18:13:48,695 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 3705 transitions. Word has length 158 [2021-11-05 18:13:48,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:48,696 INFO L470 AbstractCegarLoop]: Abstraction has 2685 states and 3705 transitions. [2021-11-05 18:13:48,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:13:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 3705 transitions. [2021-11-05 18:13:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-05 18:13:48,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:48,699 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:48,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 18:13:48,699 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:48,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:48,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1419839427, now seen corresponding path program 1 times [2021-11-05 18:13:48,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:48,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721454703] [2021-11-05 18:13:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:48,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-05 18:13:48,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:48,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721454703] [2021-11-05 18:13:48,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721454703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:48,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:48,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:13:48,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700424815] [2021-11-05 18:13:48,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:48,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:13:48,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:13:48,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:48,808 INFO L87 Difference]: Start difference. First operand 2685 states and 3705 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:13:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:48,973 INFO L93 Difference]: Finished difference Result 5182 states and 7150 transitions. [2021-11-05 18:13:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:13:48,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2021-11-05 18:13:48,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:48,978 INFO L225 Difference]: With dead ends: 5182 [2021-11-05 18:13:48,978 INFO L226 Difference]: Without dead ends: 2701 [2021-11-05 18:13:48,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:13:48,981 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 0 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.53ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.88ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:48,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3034 Invalid, 205 Unknown, 0 Unchecked, 2.53ms Time], IncrementalHoareTripleChecker [89 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 88.88ms Time] [2021-11-05 18:13:48,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-11-05 18:13:49,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2685. [2021-11-05 18:13:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2685 states, 2676 states have (on average 1.366591928251121) internal successors, (3657), 2684 states have internal predecessors, (3657), 0 states have call successors, (0), 0 states 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 18:13:49,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 3657 transitions. [2021-11-05 18:13:49,056 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 3657 transitions. Word has length 182 [2021-11-05 18:13:49,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:49,057 INFO L470 AbstractCegarLoop]: Abstraction has 2685 states and 3657 transitions. [2021-11-05 18:13:49,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:13:49,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 3657 transitions. [2021-11-05 18:13:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-05 18:13:49,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:49,060 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:49,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 18:13:49,060 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:49,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:49,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1962667782, now seen corresponding path program 1 times [2021-11-05 18:13:49,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:49,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276052429] [2021-11-05 18:13:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:49,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-05 18:13:49,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:49,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276052429] [2021-11-05 18:13:49,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276052429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:49,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:49,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:13:49,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312359116] [2021-11-05 18:13:49,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:49,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:13:49,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:49,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:13:49,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:49,161 INFO L87 Difference]: Start difference. First operand 2685 states and 3657 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 18:13:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:49,417 INFO L93 Difference]: Finished difference Result 6682 states and 9163 transitions. [2021-11-05 18:13:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 18:13:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 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 185 [2021-11-05 18:13:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:49,427 INFO L225 Difference]: With dead ends: 6682 [2021-11-05 18:13:49,427 INFO L226 Difference]: Without dead ends: 6599 [2021-11-05 18:13:49,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.07ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:13:49,429 INFO L933 BasicCegarLoop]: 3713 mSDtfsCounter, 4783 mSDsluCounter, 7501 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4783 SdHoareTripleChecker+Valid, 11214 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.83ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.13ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:49,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4783 Valid, 11214 Invalid, 67 Unknown, 0 Unchecked, 9.83ms Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 40.13ms Time] [2021-11-05 18:13:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2021-11-05 18:13:49,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 2602. [2021-11-05 18:13:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2594 states have (on average 1.3685427910562837) internal successors, (3550), 2601 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states 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 18:13:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3550 transitions. [2021-11-05 18:13:49,578 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3550 transitions. Word has length 185 [2021-11-05 18:13:49,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:49,578 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3550 transitions. [2021-11-05 18:13:49,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 18:13:49,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3550 transitions. [2021-11-05 18:13:49,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-05 18:13:49,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:49,582 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:49,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 18:13:49,582 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:49,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:49,582 INFO L85 PathProgramCache]: Analyzing trace with hash -209962859, now seen corresponding path program 1 times [2021-11-05 18:13:49,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:49,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708483522] [2021-11-05 18:13:49,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:49,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-05 18:13:49,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:49,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708483522] [2021-11-05 18:13:49,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708483522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:49,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:49,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:13:49,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878465386] [2021-11-05 18:13:49,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:49,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:13:49,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:13:49,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:49,681 INFO L87 Difference]: Start difference. First operand 2602 states and 3550 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:13:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:49,976 INFO L93 Difference]: Finished difference Result 7485 states and 10275 transitions. [2021-11-05 18:13:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 18:13:49,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2021-11-05 18:13:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:49,986 INFO L225 Difference]: With dead ends: 7485 [2021-11-05 18:13:49,986 INFO L226 Difference]: Without dead ends: 6598 [2021-11-05 18:13:49,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.34ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:13:49,989 INFO L933 BasicCegarLoop]: 3639 mSDtfsCounter, 5848 mSDsluCounter, 5766 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5848 SdHoareTripleChecker+Valid, 9405 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.81ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.88ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:49,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5848 Valid, 9405 Invalid, 66 Unknown, 0 Unchecked, 8.81ms Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 40.88ms Time] [2021-11-05 18:13:49,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6598 states. [2021-11-05 18:13:50,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6598 to 2601. [2021-11-05 18:13:50,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 2593 states have (on average 1.3682992672580023) internal successors, (3548), 2600 states have internal predecessors, (3548), 0 states have call successors, (0), 0 states 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 18:13:50,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3548 transitions. [2021-11-05 18:13:50,101 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3548 transitions. Word has length 186 [2021-11-05 18:13:50,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:50,101 INFO L470 AbstractCegarLoop]: Abstraction has 2601 states and 3548 transitions. [2021-11-05 18:13:50,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:13:50,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3548 transitions. [2021-11-05 18:13:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-05 18:13:50,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:50,104 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:13:50,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 18:13:50,105 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:50,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1745425664, now seen corresponding path program 1 times [2021-11-05 18:13:50,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:50,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357900274] [2021-11-05 18:13:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:50,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-05 18:13:50,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:50,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357900274] [2021-11-05 18:13:50,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357900274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:50,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:50,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:13:50,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521356111] [2021-11-05 18:13:50,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:50,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:13:50,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:50,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:13:50,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:50,236 INFO L87 Difference]: Start difference. First operand 2601 states and 3548 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:13:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:50,622 INFO L93 Difference]: Finished difference Result 7786 states and 10676 transitions. [2021-11-05 18:13:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 18:13:50,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-11-05 18:13:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:50,636 INFO L225 Difference]: With dead ends: 7786 [2021-11-05 18:13:50,636 INFO L226 Difference]: Without dead ends: 7758 [2021-11-05 18:13:50,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.54ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:13:50,638 INFO L933 BasicCegarLoop]: 3644 mSDtfsCounter, 6305 mSDsluCounter, 8838 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6305 SdHoareTripleChecker+Valid, 12482 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.44ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.42ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:50,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6305 Valid, 12482 Invalid, 81 Unknown, 0 Unchecked, 10.44ms Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 49.42ms Time] [2021-11-05 18:13:50,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2021-11-05 18:13:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 2573. [2021-11-05 18:13:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2573 states, 2567 states have (on average 1.369692247760031) internal successors, (3516), 2572 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states 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 18:13:50,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3516 transitions. [2021-11-05 18:13:50,758 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3516 transitions. Word has length 189 [2021-11-05 18:13:50,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:50,758 INFO L470 AbstractCegarLoop]: Abstraction has 2573 states and 3516 transitions. [2021-11-05 18:13:50,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:13:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3516 transitions. [2021-11-05 18:13:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-05 18:13:50,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:13:50,762 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:50,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 18:13:50,762 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-05 18:13:50,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:13:50,762 INFO L85 PathProgramCache]: Analyzing trace with hash -307092152, now seen corresponding path program 1 times [2021-11-05 18:13:50,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:13:50,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132974896] [2021-11-05 18:13:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:13:50,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:13:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:13:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-05 18:13:50,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:13:50,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132974896] [2021-11-05 18:13:50,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132974896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:13:50,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:13:50,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 18:13:50,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440461161] [2021-11-05 18:13:50,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:13:50,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 18:13:50,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:13:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 18:13:50,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:13:50,913 INFO L87 Difference]: Start difference. First operand 2573 states and 3516 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:13:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:13:51,459 INFO L93 Difference]: Finished difference Result 7760 states and 10646 transitions. [2021-11-05 18:13:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 18:13:51,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-11-05 18:13:51,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:13:51,460 INFO L225 Difference]: With dead ends: 7760 [2021-11-05 18:13:51,460 INFO L226 Difference]: Without dead ends: 0 [2021-11-05 18:13:51,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.79ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:13:51,467 INFO L933 BasicCegarLoop]: 3612 mSDtfsCounter, 7194 mSDsluCounter, 7106 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7194 SdHoareTripleChecker+Valid, 10718 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.91ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.56ms IncrementalHoareTripleChecker+Time [2021-11-05 18:13:51,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7194 Valid, 10718 Invalid, 79 Unknown, 0 Unchecked, 11.91ms Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 123.56ms Time] [2021-11-05 18:13:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-05 18:13:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-05 18:13:51,468 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 18:13:51,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-05 18:13:51,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 201 [2021-11-05 18:13:51,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:13:51,468 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-05 18:13:51,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:13:51,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-05 18:13:51,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-05 18:13:51,471 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (20 of 21 remaining) [2021-11-05 18:13:51,471 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (19 of 21 remaining) [2021-11-05 18:13:51,471 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (18 of 21 remaining) [2021-11-05 18:13:51,471 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (17 of 21 remaining) [2021-11-05 18:13:51,471 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (16 of 21 remaining) [2021-11-05 18:13:51,471 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (15 of 21 remaining) [2021-11-05 18:13:51,472 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (14 of 21 remaining) [2021-11-05 18:13:51,472 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (13 of 21 remaining) [2021-11-05 18:13:51,472 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (12 of 21 remaining) [2021-11-05 18:13:51,472 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (11 of 21 remaining) [2021-11-05 18:13:51,472 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (10 of 21 remaining) [2021-11-05 18:13:51,472 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (9 of 21 remaining) [2021-11-05 18:13:51,472 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (8 of 21 remaining) [2021-11-05 18:13:51,472 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (7 of 21 remaining) [2021-11-05 18:13:51,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (6 of 21 remaining) [2021-11-05 18:13:51,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION (5 of 21 remaining) [2021-11-05 18:13:51,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION (4 of 21 remaining) [2021-11-05 18:13:51,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION (3 of 21 remaining) [2021-11-05 18:13:51,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION (2 of 21 remaining) [2021-11-05 18:13:51,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION (1 of 21 remaining) [2021-11-05 18:13:51,473 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION (0 of 21 remaining) [2021-11-05 18:13:51,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 18:13:51,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-05 18:13:58,434 WARN L230 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2021-11-05 18:14:03,623 WARN L230 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:14:32,655 WARN L230 SmtUtils]: Spent 29.00s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:15:01,606 WARN L230 SmtUtils]: Spent 28.95s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:15:12,834 WARN L230 SmtUtils]: Spent 11.23s on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2021-11-05 18:15:18,100 WARN L230 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:15:30,290 WARN L230 SmtUtils]: Spent 12.19s on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2021-11-05 18:15:59,541 WARN L230 SmtUtils]: Spent 29.05s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:16:12,311 WARN L230 SmtUtils]: Spent 11.34s on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-11-05 18:16:41,554 WARN L230 SmtUtils]: Spent 29.24s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:17:10,676 WARN L230 SmtUtils]: Spent 29.10s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:17:17,309 WARN L230 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:17:22,504 WARN L230 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:17:33,855 WARN L230 SmtUtils]: Spent 11.35s on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-11-05 18:17:39,047 WARN L230 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:17:45,443 WARN L230 SmtUtils]: Spent 6.37s on a formula simplification that was a NOOP. DAG size: 133 [2021-11-05 18:17:57,665 WARN L230 SmtUtils]: Spent 12.09s on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2021-11-05 18:18:26,933 WARN L230 SmtUtils]: Spent 29.16s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:18:55,774 WARN L230 SmtUtils]: Spent 28.84s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:19:07,904 WARN L230 SmtUtils]: Spent 12.13s on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2021-11-05 18:19:36,688 WARN L230 SmtUtils]: Spent 28.78s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:19:49,156 WARN L230 SmtUtils]: Spent 11.09s on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2021-11-05 18:20:00,330 WARN L230 SmtUtils]: Spent 11.17s on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-11-05 18:20:12,339 WARN L230 SmtUtils]: Spent 11.97s on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2021-11-05 18:20:29,383 WARN L230 SmtUtils]: Spent 17.03s on a formula simplification that was a NOOP. DAG size: 205 [2021-11-05 18:20:58,072 WARN L230 SmtUtils]: Spent 28.69s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:21:26,706 WARN L230 SmtUtils]: Spent 28.63s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:21:31,826 WARN L230 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:21:42,924 WARN L230 SmtUtils]: Spent 11.10s on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-11-05 18:21:54,945 WARN L230 SmtUtils]: Spent 12.00s on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2021-11-05 18:22:23,724 WARN L230 SmtUtils]: Spent 28.78s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:22:34,859 WARN L230 SmtUtils]: Spent 11.13s on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2021-11-05 18:22:46,412 WARN L230 SmtUtils]: Spent 10.25s on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2021-11-05 18:22:58,475 WARN L230 SmtUtils]: Spent 12.00s on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2021-11-05 18:23:03,627 WARN L230 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:23:11,239 WARN L230 SmtUtils]: Spent 6.35s on a formula simplification that was a NOOP. DAG size: 133 [2021-11-05 18:23:16,438 WARN L230 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:23:45,317 WARN L230 SmtUtils]: Spent 28.86s on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2021-11-05 18:23:57,539 WARN L230 SmtUtils]: Spent 12.10s on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2021-11-05 18:24:05,783 WARN L230 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2021-11-05 18:24:39,778 WARN L230 SmtUtils]: Spent 28.88s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:25:08,791 WARN L230 SmtUtils]: Spent 28.85s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:25:13,963 WARN L230 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:25:19,135 WARN L230 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:25:31,185 WARN L230 SmtUtils]: Spent 12.05s on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2021-11-05 18:25:43,328 WARN L230 SmtUtils]: Spent 12.04s on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2021-11-05 18:25:48,504 WARN L230 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:26:00,498 WARN L230 SmtUtils]: Spent 11.99s on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2021-11-05 18:26:05,640 WARN L230 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:26:17,676 WARN L230 SmtUtils]: Spent 12.00s on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2021-11-05 18:26:22,857 WARN L230 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:26:28,006 WARN L230 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:26:58,118 WARN L230 SmtUtils]: Spent 28.67s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:27:03,242 WARN L230 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-05 18:27:15,244 WARN L230 SmtUtils]: Spent 12.00s on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2021-11-05 18:27:43,947 WARN L230 SmtUtils]: Spent 28.68s on a formula simplification. DAG size of input: 140 DAG size of output: 137 [2021-11-05 18:27:55,929 WARN L230 SmtUtils]: Spent 11.98s on a formula simplification. DAG size of input: 79 DAG size of output: 72 Killed by 15