/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:30:47,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:30:47,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:30:47,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:30:47,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:30:47,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:30:47,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:30:47,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:30:47,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:30:47,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:30:47,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:30:47,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:30:47,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:30:47,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:30:47,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:30:47,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:30:47,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:30:47,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:30:47,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:30:47,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:30:47,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:30:47,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:30:47,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:30:47,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:30:47,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:30:47,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:30:47,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:30:47,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:30:47,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:30:47,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:30:47,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:30:47,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:30:47,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:30:47,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:30:47,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:30:47,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:30:47,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:30:47,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:30:47,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:30:47,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:30:47,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:30:47,419 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:30:47,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:30:47,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:30:47,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:30:47,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:30:47,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:30:47,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:30:47,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:30:47,422 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:30:47,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:30:47,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:30:47,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:30:47,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:30:47,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:30:47,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:30:47,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:30:47,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:30:47,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:30:47,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:30:47,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:30:47,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:30:47,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:30:47,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:30:47,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:30:47,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:30:47,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:30:47,900 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:30:47,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:30:47,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f9fbd6d7/77c15d59fdb240b4a0fb209caceb213e/FLAGb95f26a0f [2020-12-22 08:30:49,107 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:30:49,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:30:49,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f9fbd6d7/77c15d59fdb240b4a0fb209caceb213e/FLAGb95f26a0f [2020-12-22 08:30:49,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f9fbd6d7/77c15d59fdb240b4a0fb209caceb213e [2020-12-22 08:30:49,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:30:49,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:30:49,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:30:49,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:30:49,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:30:49,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:30:49" (1/1) ... [2020-12-22 08:30:49,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2959dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:49, skipping insertion in model container [2020-12-22 08:30:49,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:30:49" (1/1) ... [2020-12-22 08:30:49,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:30:49,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:30:50,302 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13202,13215] [2020-12-22 08:30:50,347 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18823,18836] [2020-12-22 08:30:50,367 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20012,20025] [2020-12-22 08:30:50,395 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22158,22171] [2020-12-22 08:30:50,415 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25438,25451] [2020-12-22 08:30:50,451 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31726,31739] [2020-12-22 08:30:51,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:30:51,267 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:30:51,353 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13202,13215] [2020-12-22 08:30:51,373 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18823,18836] [2020-12-22 08:30:51,380 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20012,20025] [2020-12-22 08:30:51,389 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22158,22171] [2020-12-22 08:30:51,402 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25438,25451] [2020-12-22 08:30:51,426 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31726,31739] [2020-12-22 08:30:51,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:30:52,004 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:30:52,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52 WrapperNode [2020-12-22 08:30:52,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:30:52,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:30:52,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:30:52,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:30:52,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52" (1/1) ... [2020-12-22 08:30:52,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52" (1/1) ... [2020-12-22 08:30:52,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:30:52,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:30:52,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:30:52,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:30:52,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52" (1/1) ... [2020-12-22 08:30:52,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52" (1/1) ... [2020-12-22 08:30:52,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52" (1/1) ... [2020-12-22 08:30:52,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52" (1/1) ... [2020-12-22 08:30:52,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52" (1/1) ... [2020-12-22 08:30:52,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52" (1/1) ... [2020-12-22 08:30:52,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52" (1/1) ... [2020-12-22 08:30:52,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:30:52,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:30:52,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:30:52,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:30:52,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:30:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:30:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:30:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:30:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:30:58,084 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:30:58,085 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:30:58,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:30:58 BoogieIcfgContainer [2020-12-22 08:30:58,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:30:58,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:30:58,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:30:58,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:30:58,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:30:49" (1/3) ... [2020-12-22 08:30:58,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a43ec07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:30:58, skipping insertion in model container [2020-12-22 08:30:58,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:30:52" (2/3) ... [2020-12-22 08:30:58,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a43ec07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:30:58, skipping insertion in model container [2020-12-22 08:30:58,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:30:58" (3/3) ... [2020-12-22 08:30:58,099 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:30:58,106 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:30:58,112 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 08:30:58,132 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 08:30:58,169 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:30:58,169 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:30:58,169 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:30:58,169 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:30:58,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:30:58,170 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:30:58,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:30:58,170 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:30:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states. [2020-12-22 08:30:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:30:58,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:58,243 INFO L422 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] [2020-12-22 08:30:58,243 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:58,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1733440182, now seen corresponding path program 1 times [2020-12-22 08:30:58,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:58,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066027104] [2020-12-22 08:30:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:30:58,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066027104] [2020-12-22 08:30:58,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:58,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:30:58,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454063465] [2020-12-22 08:30:58,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:30:58,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:58,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:30:58,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:30:58,944 INFO L87 Difference]: Start difference. First operand 1751 states. Second operand 3 states. [2020-12-22 08:30:59,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:59,541 INFO L93 Difference]: Finished difference Result 2512 states and 4420 transitions. [2020-12-22 08:30:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:30:59,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:30:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:59,601 INFO L225 Difference]: With dead ends: 2512 [2020-12-22 08:30:59,601 INFO L226 Difference]: Without dead ends: 2315 [2020-12-22 08:30:59,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:30:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-12-22 08:30:59,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2305. [2020-12-22 08:30:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-12-22 08:30:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3002 transitions. [2020-12-22 08:30:59,837 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3002 transitions. Word has length 75 [2020-12-22 08:30:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:59,838 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 3002 transitions. [2020-12-22 08:30:59,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:30:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3002 transitions. [2020-12-22 08:30:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:30:59,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:59,846 INFO L422 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] [2020-12-22 08:30:59,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:30:59,847 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:59,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:59,848 INFO L82 PathProgramCache]: Analyzing trace with hash 992628656, now seen corresponding path program 1 times [2020-12-22 08:30:59,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:59,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796778305] [2020-12-22 08:30:59,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:00,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796778305] [2020-12-22 08:31:00,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:00,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:00,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981374736] [2020-12-22 08:31:00,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:00,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:00,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:00,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:00,040 INFO L87 Difference]: Start difference. First operand 2305 states and 3002 transitions. Second operand 3 states. [2020-12-22 08:31:00,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:00,245 INFO L93 Difference]: Finished difference Result 3218 states and 4351 transitions. [2020-12-22 08:31:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:00,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:31:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:00,261 INFO L225 Difference]: With dead ends: 3218 [2020-12-22 08:31:00,262 INFO L226 Difference]: Without dead ends: 2759 [2020-12-22 08:31:00,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:00,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2020-12-22 08:31:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2749. [2020-12-22 08:31:00,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2749 states. [2020-12-22 08:31:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3652 transitions. [2020-12-22 08:31:00,356 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3652 transitions. Word has length 75 [2020-12-22 08:31:00,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:00,360 INFO L481 AbstractCegarLoop]: Abstraction has 2749 states and 3652 transitions. [2020-12-22 08:31:00,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:00,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3652 transitions. [2020-12-22 08:31:00,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:31:00,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:00,368 INFO L422 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] [2020-12-22 08:31:00,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:31:00,369 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:00,370 INFO L82 PathProgramCache]: Analyzing trace with hash -293589288, now seen corresponding path program 1 times [2020-12-22 08:31:00,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:00,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109673752] [2020-12-22 08:31:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:00,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109673752] [2020-12-22 08:31:00,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:00,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:31:00,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833993443] [2020-12-22 08:31:00,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:31:00,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:00,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:31:00,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:31:00,619 INFO L87 Difference]: Start difference. First operand 2749 states and 3652 transitions. Second operand 6 states. [2020-12-22 08:31:02,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:02,066 INFO L93 Difference]: Finished difference Result 5694 states and 7876 transitions. [2020-12-22 08:31:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:31:02,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-12-22 08:31:02,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:02,093 INFO L225 Difference]: With dead ends: 5694 [2020-12-22 08:31:02,094 INFO L226 Difference]: Without dead ends: 3547 [2020-12-22 08:31:02,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:31:02,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2020-12-22 08:31:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 3527. [2020-12-22 08:31:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3527 states. [2020-12-22 08:31:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4942 transitions. [2020-12-22 08:31:02,281 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4942 transitions. Word has length 75 [2020-12-22 08:31:02,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:02,281 INFO L481 AbstractCegarLoop]: Abstraction has 3527 states and 4942 transitions. [2020-12-22 08:31:02,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:31:02,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4942 transitions. [2020-12-22 08:31:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:31:02,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:02,290 INFO L422 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] [2020-12-22 08:31:02,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:31:02,290 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:02,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:02,291 INFO L82 PathProgramCache]: Analyzing trace with hash -659862233, now seen corresponding path program 1 times [2020-12-22 08:31:02,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:02,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811915955] [2020-12-22 08:31:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:02,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811915955] [2020-12-22 08:31:02,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:02,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:31:02,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614780699] [2020-12-22 08:31:02,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:31:02,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:02,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:31:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:31:02,526 INFO L87 Difference]: Start difference. First operand 3527 states and 4942 transitions. Second operand 6 states. [2020-12-22 08:31:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:03,919 INFO L93 Difference]: Finished difference Result 9392 states and 13522 transitions. [2020-12-22 08:31:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:31:03,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 08:31:03,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:03,951 INFO L225 Difference]: With dead ends: 9392 [2020-12-22 08:31:03,951 INFO L226 Difference]: Without dead ends: 6307 [2020-12-22 08:31:03,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:31:03,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2020-12-22 08:31:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 6287. [2020-12-22 08:31:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6287 states. [2020-12-22 08:31:04,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6287 states to 6287 states and 9082 transitions. [2020-12-22 08:31:04,259 INFO L78 Accepts]: Start accepts. Automaton has 6287 states and 9082 transitions. Word has length 76 [2020-12-22 08:31:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:04,260 INFO L481 AbstractCegarLoop]: Abstraction has 6287 states and 9082 transitions. [2020-12-22 08:31:04,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:31:04,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6287 states and 9082 transitions. [2020-12-22 08:31:04,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:31:04,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:04,267 INFO L422 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] [2020-12-22 08:31:04,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:31:04,268 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:04,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:04,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1653621631, now seen corresponding path program 1 times [2020-12-22 08:31:04,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:04,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798768491] [2020-12-22 08:31:04,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:04,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798768491] [2020-12-22 08:31:04,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:04,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:04,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861431593] [2020-12-22 08:31:04,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:04,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:04,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:04,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:04,367 INFO L87 Difference]: Start difference. First operand 6287 states and 9082 transitions. Second operand 3 states. [2020-12-22 08:31:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:04,892 INFO L93 Difference]: Finished difference Result 13754 states and 20137 transitions. [2020-12-22 08:31:04,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:04,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:31:04,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:04,943 INFO L225 Difference]: With dead ends: 13754 [2020-12-22 08:31:04,943 INFO L226 Difference]: Without dead ends: 9091 [2020-12-22 08:31:04,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9091 states. [2020-12-22 08:31:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9091 to 9057. [2020-12-22 08:31:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9057 states. [2020-12-22 08:31:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9057 states to 9057 states and 13060 transitions. [2020-12-22 08:31:05,535 INFO L78 Accepts]: Start accepts. Automaton has 9057 states and 13060 transitions. Word has length 77 [2020-12-22 08:31:05,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:05,536 INFO L481 AbstractCegarLoop]: Abstraction has 9057 states and 13060 transitions. [2020-12-22 08:31:05,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:05,537 INFO L276 IsEmpty]: Start isEmpty. Operand 9057 states and 13060 transitions. [2020-12-22 08:31:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:31:05,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:05,552 INFO L422 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] [2020-12-22 08:31:05,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:31:05,552 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:05,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:05,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1766360593, now seen corresponding path program 1 times [2020-12-22 08:31:05,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:05,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164850443] [2020-12-22 08:31:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:05,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164850443] [2020-12-22 08:31:05,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:05,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:05,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188992406] [2020-12-22 08:31:05,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:05,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:05,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:05,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:05,657 INFO L87 Difference]: Start difference. First operand 9057 states and 13060 transitions. Second operand 3 states. [2020-12-22 08:31:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:06,312 INFO L93 Difference]: Finished difference Result 20012 states and 29223 transitions. [2020-12-22 08:31:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:06,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:31:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:06,388 INFO L225 Difference]: With dead ends: 20012 [2020-12-22 08:31:06,389 INFO L226 Difference]: Without dead ends: 13086 [2020-12-22 08:31:06,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13086 states. [2020-12-22 08:31:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13086 to 13036. [2020-12-22 08:31:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13036 states. [2020-12-22 08:31:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13036 states to 13036 states and 18757 transitions. [2020-12-22 08:31:07,057 INFO L78 Accepts]: Start accepts. Automaton has 13036 states and 18757 transitions. Word has length 77 [2020-12-22 08:31:07,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:07,062 INFO L481 AbstractCegarLoop]: Abstraction has 13036 states and 18757 transitions. [2020-12-22 08:31:07,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 13036 states and 18757 transitions. [2020-12-22 08:31:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:31:07,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:07,085 INFO L422 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] [2020-12-22 08:31:07,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:31:07,085 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:07,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:07,086 INFO L82 PathProgramCache]: Analyzing trace with hash -775572248, now seen corresponding path program 1 times [2020-12-22 08:31:07,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:07,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959846825] [2020-12-22 08:31:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:07,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959846825] [2020-12-22 08:31:07,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:07,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:07,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424477220] [2020-12-22 08:31:07,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:07,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:07,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:07,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:07,268 INFO L87 Difference]: Start difference. First operand 13036 states and 18757 transitions. Second operand 3 states. [2020-12-22 08:31:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:08,163 INFO L93 Difference]: Finished difference Result 32936 states and 48056 transitions. [2020-12-22 08:31:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:08,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:31:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:08,223 INFO L225 Difference]: With dead ends: 32936 [2020-12-22 08:31:08,223 INFO L226 Difference]: Without dead ends: 21684 [2020-12-22 08:31:08,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:08,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21684 states. [2020-12-22 08:31:09,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21684 to 21674. [2020-12-22 08:31:09,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21674 states. [2020-12-22 08:31:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21674 states to 21674 states and 31272 transitions. [2020-12-22 08:31:09,567 INFO L78 Accepts]: Start accepts. Automaton has 21674 states and 31272 transitions. Word has length 77 [2020-12-22 08:31:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:09,568 INFO L481 AbstractCegarLoop]: Abstraction has 21674 states and 31272 transitions. [2020-12-22 08:31:09,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 21674 states and 31272 transitions. [2020-12-22 08:31:09,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:31:09,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:09,587 INFO L422 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] [2020-12-22 08:31:09,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:31:09,588 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:09,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1793167006, now seen corresponding path program 1 times [2020-12-22 08:31:09,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:09,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189831796] [2020-12-22 08:31:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:09,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189831796] [2020-12-22 08:31:09,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:09,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:31:09,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764228367] [2020-12-22 08:31:09,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:31:09,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:09,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:31:09,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:31:09,744 INFO L87 Difference]: Start difference. First operand 21674 states and 31272 transitions. Second operand 5 states. [2020-12-22 08:31:12,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:12,035 INFO L93 Difference]: Finished difference Result 50048 states and 72554 transitions. [2020-12-22 08:31:12,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:31:12,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-12-22 08:31:12,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:12,106 INFO L225 Difference]: With dead ends: 50048 [2020-12-22 08:31:12,107 INFO L226 Difference]: Without dead ends: 29340 [2020-12-22 08:31:12,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29340 states. [2020-12-22 08:31:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29340 to 29230. [2020-12-22 08:31:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29230 states. [2020-12-22 08:31:13,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29230 states to 29230 states and 42141 transitions. [2020-12-22 08:31:13,917 INFO L78 Accepts]: Start accepts. Automaton has 29230 states and 42141 transitions. Word has length 77 [2020-12-22 08:31:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:13,917 INFO L481 AbstractCegarLoop]: Abstraction has 29230 states and 42141 transitions. [2020-12-22 08:31:13,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:31:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 29230 states and 42141 transitions. [2020-12-22 08:31:13,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:31:13,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:13,935 INFO L422 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] [2020-12-22 08:31:13,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:31:13,935 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:13,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:13,936 INFO L82 PathProgramCache]: Analyzing trace with hash 384616632, now seen corresponding path program 1 times [2020-12-22 08:31:13,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:13,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459472287] [2020-12-22 08:31:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:14,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459472287] [2020-12-22 08:31:14,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:14,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:31:14,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619884664] [2020-12-22 08:31:14,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:31:14,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:14,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:31:14,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:14,071 INFO L87 Difference]: Start difference. First operand 29230 states and 42141 transitions. Second operand 7 states. [2020-12-22 08:31:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:20,640 INFO L93 Difference]: Finished difference Result 121282 states and 177195 transitions. [2020-12-22 08:31:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:31:20,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-12-22 08:31:20,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:20,852 INFO L225 Difference]: With dead ends: 121282 [2020-12-22 08:31:20,853 INFO L226 Difference]: Without dead ends: 110897 [2020-12-22 08:31:20,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:31:20,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110897 states. [2020-12-22 08:31:23,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110897 to 29278. [2020-12-22 08:31:23,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29278 states. [2020-12-22 08:31:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29278 states to 29278 states and 42205 transitions. [2020-12-22 08:31:23,568 INFO L78 Accepts]: Start accepts. Automaton has 29278 states and 42205 transitions. Word has length 78 [2020-12-22 08:31:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:23,568 INFO L481 AbstractCegarLoop]: Abstraction has 29278 states and 42205 transitions. [2020-12-22 08:31:23,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:31:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 29278 states and 42205 transitions. [2020-12-22 08:31:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:31:23,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:23,584 INFO L422 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] [2020-12-22 08:31:23,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:31:23,585 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:23,586 INFO L82 PathProgramCache]: Analyzing trace with hash -448054908, now seen corresponding path program 1 times [2020-12-22 08:31:23,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:23,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925940938] [2020-12-22 08:31:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:23,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925940938] [2020-12-22 08:31:23,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:23,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:31:23,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991523338] [2020-12-22 08:31:23,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:31:23,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:23,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:31:23,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:23,729 INFO L87 Difference]: Start difference. First operand 29278 states and 42205 transitions. Second operand 7 states. [2020-12-22 08:31:32,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:32,786 INFO L93 Difference]: Finished difference Result 130396 states and 190526 transitions. [2020-12-22 08:31:32,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:31:32,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-12-22 08:31:32,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:33,016 INFO L225 Difference]: With dead ends: 130396 [2020-12-22 08:31:33,017 INFO L226 Difference]: Without dead ends: 118086 [2020-12-22 08:31:33,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:31:33,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118086 states. [2020-12-22 08:31:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118086 to 29458. [2020-12-22 08:31:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29458 states. [2020-12-22 08:31:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29458 states to 29458 states and 42445 transitions. [2020-12-22 08:31:36,149 INFO L78 Accepts]: Start accepts. Automaton has 29458 states and 42445 transitions. Word has length 78 [2020-12-22 08:31:36,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:36,149 INFO L481 AbstractCegarLoop]: Abstraction has 29458 states and 42445 transitions. [2020-12-22 08:31:36,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:31:36,149 INFO L276 IsEmpty]: Start isEmpty. Operand 29458 states and 42445 transitions. [2020-12-22 08:31:36,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:31:36,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:36,164 INFO L422 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] [2020-12-22 08:31:36,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:31:36,164 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:36,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:36,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1302867127, now seen corresponding path program 1 times [2020-12-22 08:31:36,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:36,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827220031] [2020-12-22 08:31:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:36,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827220031] [2020-12-22 08:31:36,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:36,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:31:36,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162647399] [2020-12-22 08:31:36,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:31:36,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:36,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:31:36,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:36,304 INFO L87 Difference]: Start difference. First operand 29458 states and 42445 transitions. Second operand 7 states. [2020-12-22 08:31:46,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:46,822 INFO L93 Difference]: Finished difference Result 119204 states and 174188 transitions. [2020-12-22 08:31:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:31:46,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-12-22 08:31:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:47,108 INFO L225 Difference]: With dead ends: 119204 [2020-12-22 08:31:47,108 INFO L226 Difference]: Without dead ends: 107012 [2020-12-22 08:31:47,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:31:47,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107012 states. [2020-12-22 08:31:50,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107012 to 29826. [2020-12-22 08:31:50,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29826 states. [2020-12-22 08:31:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29826 states to 29826 states and 42937 transitions. [2020-12-22 08:31:50,251 INFO L78 Accepts]: Start accepts. Automaton has 29826 states and 42937 transitions. Word has length 78 [2020-12-22 08:31:50,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:50,251 INFO L481 AbstractCegarLoop]: Abstraction has 29826 states and 42937 transitions. [2020-12-22 08:31:50,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:31:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 29826 states and 42937 transitions. [2020-12-22 08:31:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:31:50,266 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:50,267 INFO L422 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] [2020-12-22 08:31:50,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:31:50,267 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:50,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:50,268 INFO L82 PathProgramCache]: Analyzing trace with hash -2082723386, now seen corresponding path program 1 times [2020-12-22 08:31:50,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:50,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039912385] [2020-12-22 08:31:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:50,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039912385] [2020-12-22 08:31:50,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:50,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:31:50,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075726852] [2020-12-22 08:31:50,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:31:50,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:50,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:31:50,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:31:50,407 INFO L87 Difference]: Start difference. First operand 29826 states and 42937 transitions. Second operand 4 states. [2020-12-22 08:31:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:54,948 INFO L93 Difference]: Finished difference Result 49358 states and 72018 transitions. [2020-12-22 08:31:54,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:31:54,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 08:31:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:55,002 INFO L225 Difference]: With dead ends: 49358 [2020-12-22 08:31:55,002 INFO L226 Difference]: Without dead ends: 49356 [2020-12-22 08:31:55,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:31:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49356 states. [2020-12-22 08:31:57,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49356 to 29824. [2020-12-22 08:31:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29824 states. [2020-12-22 08:31:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29824 states to 29824 states and 42888 transitions. [2020-12-22 08:31:57,781 INFO L78 Accepts]: Start accepts. Automaton has 29824 states and 42888 transitions. Word has length 79 [2020-12-22 08:31:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:57,781 INFO L481 AbstractCegarLoop]: Abstraction has 29824 states and 42888 transitions. [2020-12-22 08:31:57,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:31:57,782 INFO L276 IsEmpty]: Start isEmpty. Operand 29824 states and 42888 transitions. [2020-12-22 08:31:57,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:31:57,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:57,794 INFO L422 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] [2020-12-22 08:31:57,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:31:57,794 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:57,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:57,795 INFO L82 PathProgramCache]: Analyzing trace with hash -554526117, now seen corresponding path program 1 times [2020-12-22 08:31:57,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:57,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511082013] [2020-12-22 08:31:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:57,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511082013] [2020-12-22 08:31:57,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:57,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:31:57,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573913080] [2020-12-22 08:31:57,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:31:57,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:57,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:31:57,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:31:57,902 INFO L87 Difference]: Start difference. First operand 29824 states and 42888 transitions. Second operand 4 states. [2020-12-22 08:32:02,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:02,653 INFO L93 Difference]: Finished difference Result 49356 states and 71969 transitions. [2020-12-22 08:32:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:32:02,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 08:32:02,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:02,704 INFO L225 Difference]: With dead ends: 49356 [2020-12-22 08:32:02,704 INFO L226 Difference]: Without dead ends: 49354 [2020-12-22 08:32:02,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:32:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49354 states. [2020-12-22 08:32:05,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49354 to 29822. [2020-12-22 08:32:05,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29822 states. [2020-12-22 08:32:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29822 states to 29822 states and 42823 transitions. [2020-12-22 08:32:05,404 INFO L78 Accepts]: Start accepts. Automaton has 29822 states and 42823 transitions. Word has length 79 [2020-12-22 08:32:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:05,404 INFO L481 AbstractCegarLoop]: Abstraction has 29822 states and 42823 transitions. [2020-12-22 08:32:05,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:32:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 29822 states and 42823 transitions. [2020-12-22 08:32:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:32:05,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:05,416 INFO L422 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] [2020-12-22 08:32:05,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:32:05,417 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:05,417 INFO L82 PathProgramCache]: Analyzing trace with hash -2114012911, now seen corresponding path program 1 times [2020-12-22 08:32:05,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:05,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678880306] [2020-12-22 08:32:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:05,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678880306] [2020-12-22 08:32:05,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:05,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:32:05,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166726570] [2020-12-22 08:32:05,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:32:05,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:05,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:32:05,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:32:05,505 INFO L87 Difference]: Start difference. First operand 29822 states and 42823 transitions. Second operand 5 states. [2020-12-22 08:32:10,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:10,292 INFO L93 Difference]: Finished difference Result 69540 states and 99891 transitions. [2020-12-22 08:32:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:10,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-12-22 08:32:10,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:10,339 INFO L225 Difference]: With dead ends: 69540 [2020-12-22 08:32:10,339 INFO L226 Difference]: Without dead ends: 40522 [2020-12-22 08:32:10,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:32:10,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40522 states. [2020-12-22 08:32:14,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40522 to 40366. [2020-12-22 08:32:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40366 states. [2020-12-22 08:32:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40366 states to 40366 states and 57581 transitions. [2020-12-22 08:32:14,556 INFO L78 Accepts]: Start accepts. Automaton has 40366 states and 57581 transitions. Word has length 79 [2020-12-22 08:32:14,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:14,557 INFO L481 AbstractCegarLoop]: Abstraction has 40366 states and 57581 transitions. [2020-12-22 08:32:14,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:32:14,557 INFO L276 IsEmpty]: Start isEmpty. Operand 40366 states and 57581 transitions. [2020-12-22 08:32:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:32:14,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:14,568 INFO L422 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] [2020-12-22 08:32:14,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:32:14,568 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:14,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1892443340, now seen corresponding path program 1 times [2020-12-22 08:32:14,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:14,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892181205] [2020-12-22 08:32:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:14,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892181205] [2020-12-22 08:32:14,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:14,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:32:14,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674020451] [2020-12-22 08:32:14,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:32:14,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:14,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:32:14,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:32:14,665 INFO L87 Difference]: Start difference. First operand 40366 states and 57581 transitions. Second operand 6 states. [2020-12-22 08:32:24,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:24,842 INFO L93 Difference]: Finished difference Result 128184 states and 183952 transitions. [2020-12-22 08:32:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:24,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-12-22 08:32:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:25,077 INFO L225 Difference]: With dead ends: 128184 [2020-12-22 08:32:25,077 INFO L226 Difference]: Without dead ends: 88689 [2020-12-22 08:32:25,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:25,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88689 states. [2020-12-22 08:32:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88689 to 58782. [2020-12-22 08:32:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58782 states. [2020-12-22 08:32:31,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58782 states to 58782 states and 84165 transitions. [2020-12-22 08:32:31,707 INFO L78 Accepts]: Start accepts. Automaton has 58782 states and 84165 transitions. Word has length 79 [2020-12-22 08:32:31,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:31,707 INFO L481 AbstractCegarLoop]: Abstraction has 58782 states and 84165 transitions. [2020-12-22 08:32:31,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:32:31,707 INFO L276 IsEmpty]: Start isEmpty. Operand 58782 states and 84165 transitions. [2020-12-22 08:32:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:32:31,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:31,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:31,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:32:31,861 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:31,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1137442928, now seen corresponding path program 1 times [2020-12-22 08:32:31,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:31,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570758287] [2020-12-22 08:32:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:31,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570758287] [2020-12-22 08:32:31,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:31,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:32:31,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726615684] [2020-12-22 08:32:31,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:32:31,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:31,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:32:31,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:32:31,977 INFO L87 Difference]: Start difference. First operand 58782 states and 84165 transitions. Second operand 7 states. [2020-12-22 08:33:01,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:01,203 INFO L93 Difference]: Finished difference Result 251970 states and 363842 transitions. [2020-12-22 08:33:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:33:01,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-12-22 08:33:01,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:01,618 INFO L225 Difference]: With dead ends: 251970 [2020-12-22 08:33:01,618 INFO L226 Difference]: Without dead ends: 222053 [2020-12-22 08:33:01,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:33:01,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222053 states. [2020-12-22 08:33:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222053 to 59896. [2020-12-22 08:33:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59896 states. [2020-12-22 08:33:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59896 states to 59896 states and 85653 transitions. [2020-12-22 08:33:10,325 INFO L78 Accepts]: Start accepts. Automaton has 59896 states and 85653 transitions. Word has length 80 [2020-12-22 08:33:10,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:10,326 INFO L481 AbstractCegarLoop]: Abstraction has 59896 states and 85653 transitions. [2020-12-22 08:33:10,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:33:10,326 INFO L276 IsEmpty]: Start isEmpty. Operand 59896 states and 85653 transitions. [2020-12-22 08:33:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:33:10,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:10,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:10,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:33:10,338 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:10,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:10,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1407167192, now seen corresponding path program 1 times [2020-12-22 08:33:10,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:10,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57298491] [2020-12-22 08:33:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:10,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57298491] [2020-12-22 08:33:10,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:10,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:33:10,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013496739] [2020-12-22 08:33:10,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:33:10,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:10,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:33:10,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:33:10,445 INFO L87 Difference]: Start difference. First operand 59896 states and 85653 transitions. Second operand 7 states. [2020-12-22 08:33:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:39,910 INFO L93 Difference]: Finished difference Result 228953 states and 329836 transitions. [2020-12-22 08:33:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:33:39,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-12-22 08:33:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:40,248 INFO L225 Difference]: With dead ends: 228953 [2020-12-22 08:33:40,248 INFO L226 Difference]: Without dead ends: 196797 [2020-12-22 08:33:40,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:33:40,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196797 states. [2020-12-22 08:33:49,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196797 to 59980. [2020-12-22 08:33:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59980 states. [2020-12-22 08:33:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59980 states to 59980 states and 85761 transitions. [2020-12-22 08:33:49,488 INFO L78 Accepts]: Start accepts. Automaton has 59980 states and 85761 transitions. Word has length 80 [2020-12-22 08:33:49,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:49,489 INFO L481 AbstractCegarLoop]: Abstraction has 59980 states and 85761 transitions. [2020-12-22 08:33:49,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:33:49,489 INFO L276 IsEmpty]: Start isEmpty. Operand 59980 states and 85761 transitions. [2020-12-22 08:33:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:33:49,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:49,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:49,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:33:49,643 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:49,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:49,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1477869642, now seen corresponding path program 1 times [2020-12-22 08:33:49,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:49,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733181099] [2020-12-22 08:33:49,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:49,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733181099] [2020-12-22 08:33:49,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:49,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:33:49,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6692737] [2020-12-22 08:33:49,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:33:49,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:49,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:33:49,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:33:49,776 INFO L87 Difference]: Start difference. First operand 59980 states and 85761 transitions. Second operand 4 states. [2020-12-22 08:34:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:04,335 INFO L93 Difference]: Finished difference Result 104037 states and 150742 transitions. [2020-12-22 08:34:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:34:04,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-12-22 08:34:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:04,467 INFO L225 Difference]: With dead ends: 104037 [2020-12-22 08:34:04,467 INFO L226 Difference]: Without dead ends: 104035 [2020-12-22 08:34:04,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:34:04,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104035 states. [2020-12-22 08:34:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104035 to 59978. [2020-12-22 08:34:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59978 states. [2020-12-22 08:34:13,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59978 states to 59978 states and 85616 transitions. [2020-12-22 08:34:13,049 INFO L78 Accepts]: Start accepts. Automaton has 59978 states and 85616 transitions. Word has length 81 [2020-12-22 08:34:13,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:13,050 INFO L481 AbstractCegarLoop]: Abstraction has 59978 states and 85616 transitions. [2020-12-22 08:34:13,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:34:13,050 INFO L276 IsEmpty]: Start isEmpty. Operand 59978 states and 85616 transitions. [2020-12-22 08:34:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:34:13,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:13,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:13,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:34:13,065 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:13,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:13,066 INFO L82 PathProgramCache]: Analyzing trace with hash -918459322, now seen corresponding path program 1 times [2020-12-22 08:34:13,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:13,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660802089] [2020-12-22 08:34:13,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:13,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660802089] [2020-12-22 08:34:13,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:13,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:34:13,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935389767] [2020-12-22 08:34:13,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:34:13,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:13,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:34:13,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:34:13,162 INFO L87 Difference]: Start difference. First operand 59978 states and 85616 transitions. Second operand 4 states. [2020-12-22 08:34:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:28,208 INFO L93 Difference]: Finished difference Result 104035 states and 150597 transitions. [2020-12-22 08:34:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:34:28,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-12-22 08:34:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:28,372 INFO L225 Difference]: With dead ends: 104035 [2020-12-22 08:34:28,372 INFO L226 Difference]: Without dead ends: 104033 [2020-12-22 08:34:28,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:34:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104033 states. [2020-12-22 08:34:37,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104033 to 59976. [2020-12-22 08:34:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59976 states. [2020-12-22 08:34:37,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59976 states to 59976 states and 85507 transitions. [2020-12-22 08:34:37,345 INFO L78 Accepts]: Start accepts. Automaton has 59976 states and 85507 transitions. Word has length 81 [2020-12-22 08:34:37,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:37,346 INFO L481 AbstractCegarLoop]: Abstraction has 59976 states and 85507 transitions. [2020-12-22 08:34:37,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:34:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 59976 states and 85507 transitions. [2020-12-22 08:34:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:34:37,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:37,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:34:37,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:34:37,361 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:37,361 INFO L82 PathProgramCache]: Analyzing trace with hash 433406996, now seen corresponding path program 1 times [2020-12-22 08:34:37,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:37,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628740925] [2020-12-22 08:34:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:37,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:37,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628740925] [2020-12-22 08:34:37,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:37,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:34:37,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384998319] [2020-12-22 08:34:37,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:34:37,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:37,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:34:37,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:34:37,734 INFO L87 Difference]: Start difference. First operand 59976 states and 85507 transitions. Second operand 9 states.