/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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:52:44,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:52:44,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:52:44,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:52:44,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:52:44,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:52:44,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:52:44,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:52:44,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:52:44,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:52:44,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:52:44,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:52:44,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:52:44,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:52:44,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:52:44,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:52:44,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:52:44,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:52:44,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:52:44,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:52:44,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:52:44,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:52:44,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:52:44,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:52:44,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 14:52:44,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:52:44,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:52:44,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:52:44,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:52:44,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:52:44,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:52:44,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:52:44,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:52:44,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:52:44,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:52:44,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:52:44,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:52:44,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:52:44,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:52:44,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:52:44,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:52:44,998 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:52:44,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:52:44,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:52:45,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:52:45,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:52:45,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:52:45,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:52:45,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:52:45,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:52:45,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:52:45,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:52:45,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:52:45,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:52:45,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:52:45,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:52:45,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:52:45,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:52:45,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:52:45,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:52:45,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:52:45,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:52:45,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:52:45,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:52:45,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:52:45,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:52:45,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:52:45,446 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:52:45,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2020-12-22 14:52:45,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91a4094c/07c5a482a9834b659002d015a9178134/FLAG7f757bd4b [2020-12-22 14:52:46,713 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:52:46,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2020-12-22 14:52:46,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91a4094c/07c5a482a9834b659002d015a9178134/FLAG7f757bd4b [2020-12-22 14:52:46,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91a4094c/07c5a482a9834b659002d015a9178134 [2020-12-22 14:52:46,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:52:46,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:52:46,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:52:46,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:52:46,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:52:46,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:52:46" (1/1) ... [2020-12-22 14:52:46,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11552665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:46, skipping insertion in model container [2020-12-22 14:52:46,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:52:46" (1/1) ... [2020-12-22 14:52:46,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:52:46,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:52:48,618 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2020-12-22 14:52:48,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:52:48,746 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:52:49,206 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2020-12-22 14:52:49,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:52:49,575 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:52:49,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49 WrapperNode [2020-12-22 14:52:49,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:52:49,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:52:49,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:52:49,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:52:49,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49" (1/1) ... [2020-12-22 14:52:49,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49" (1/1) ... [2020-12-22 14:52:50,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:52:50,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:52:50,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:52:50,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:52:50,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49" (1/1) ... [2020-12-22 14:52:50,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49" (1/1) ... [2020-12-22 14:52:50,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49" (1/1) ... [2020-12-22 14:52:50,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49" (1/1) ... [2020-12-22 14:52:50,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49" (1/1) ... [2020-12-22 14:52:50,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49" (1/1) ... [2020-12-22 14:52:50,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49" (1/1) ... [2020-12-22 14:52:50,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:52:50,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:52:50,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:52:50,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:52:50,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49" (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 14:52:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:52:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:52:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:52:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:52:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:52:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:52:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:52:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:52:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:52:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:52:50,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:53:08,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:53:08,159 INFO L299 CfgBuilder]: Removed 2182 assume(true) statements. [2020-12-22 14:53:08,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:53:08 BoogieIcfgContainer [2020-12-22 14:53:08,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:53:08,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:53:08,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:53:08,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:53:08,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:52:46" (1/3) ... [2020-12-22 14:53:08,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2d4b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:53:08, skipping insertion in model container [2020-12-22 14:53:08,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:49" (2/3) ... [2020-12-22 14:53:08,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2d4b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:53:08, skipping insertion in model container [2020-12-22 14:53:08,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:53:08" (3/3) ... [2020-12-22 14:53:08,176 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2020-12-22 14:53:08,184 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:53:08,191 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 14:53:08,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 14:53:08,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:53:08,265 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:53:08,265 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:53:08,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:53:08,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:53:08,265 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:53:08,265 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:53:08,266 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:53:08,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states. [2020-12-22 14:53:08,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 14:53:08,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:53:08,351 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 14:53:08,352 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:53:08,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:53:08,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1801920152, now seen corresponding path program 1 times [2020-12-22 14:53:08,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:53:08,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486198810] [2020-12-22 14:53:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:53:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:53:09,234 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 14:53:09,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486198810] [2020-12-22 14:53:09,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:53:09,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:53:09,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898123311] [2020-12-22 14:53:09,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:53:09,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:53:09,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:53:09,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:53:09,263 INFO L87 Difference]: Start difference. First operand 1923 states. Second operand 2 states. [2020-12-22 14:53:09,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:53:09,446 INFO L93 Difference]: Finished difference Result 3842 states and 5291 transitions. [2020-12-22 14:53:09,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:53:09,448 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 75 [2020-12-22 14:53:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:53:09,476 INFO L225 Difference]: With dead ends: 3842 [2020-12-22 14:53:09,477 INFO L226 Difference]: Without dead ends: 1896 [2020-12-22 14:53:09,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:53:09,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2020-12-22 14:53:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1896. [2020-12-22 14:53:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2020-12-22 14:53:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2569 transitions. [2020-12-22 14:53:09,628 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2569 transitions. Word has length 75 [2020-12-22 14:53:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:53:09,629 INFO L481 AbstractCegarLoop]: Abstraction has 1896 states and 2569 transitions. [2020-12-22 14:53:09,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:53:09,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2569 transitions. [2020-12-22 14:53:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 14:53:09,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:53:09,637 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 14:53:09,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:53:09,637 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:53:09,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:53:09,640 INFO L82 PathProgramCache]: Analyzing trace with hash -582973410, now seen corresponding path program 1 times [2020-12-22 14:53:09,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:53:09,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880879058] [2020-12-22 14:53:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:53:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:53:10,095 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 14:53:10,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880879058] [2020-12-22 14:53:10,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:53:10,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:53:10,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103233233] [2020-12-22 14:53:10,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:53:10,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:53:10,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:53:10,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:53:10,099 INFO L87 Difference]: Start difference. First operand 1896 states and 2569 transitions. Second operand 5 states. [2020-12-22 14:53:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:53:12,787 INFO L93 Difference]: Finished difference Result 8466 states and 11485 transitions. [2020-12-22 14:53:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:53:12,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 14:53:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:53:12,825 INFO L225 Difference]: With dead ends: 8466 [2020-12-22 14:53:12,826 INFO L226 Difference]: Without dead ends: 6597 [2020-12-22 14:53:12,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:53:12,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6597 states. [2020-12-22 14:53:13,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6597 to 6559. [2020-12-22 14:53:13,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6559 states. [2020-12-22 14:53:13,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6559 states to 6559 states and 8914 transitions. [2020-12-22 14:53:13,076 INFO L78 Accepts]: Start accepts. Automaton has 6559 states and 8914 transitions. Word has length 75 [2020-12-22 14:53:13,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:53:13,077 INFO L481 AbstractCegarLoop]: Abstraction has 6559 states and 8914 transitions. [2020-12-22 14:53:13,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:53:13,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6559 states and 8914 transitions. [2020-12-22 14:53:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 14:53:13,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:53:13,083 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 14:53:13,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:53:13,084 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:53:13,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:53:13,086 INFO L82 PathProgramCache]: Analyzing trace with hash 335286776, now seen corresponding path program 1 times [2020-12-22 14:53:13,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:53:13,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758396583] [2020-12-22 14:53:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:53:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:53:13,477 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 14:53:13,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758396583] [2020-12-22 14:53:13,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:53:13,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:53:13,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477803249] [2020-12-22 14:53:13,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:53:13,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:53:13,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:53:13,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:53:13,481 INFO L87 Difference]: Start difference. First operand 6559 states and 8914 transitions. Second operand 5 states. [2020-12-22 14:53:16,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:53:16,663 INFO L93 Difference]: Finished difference Result 29131 states and 39548 transitions. [2020-12-22 14:53:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:53:16,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-12-22 14:53:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:53:16,812 INFO L225 Difference]: With dead ends: 29131 [2020-12-22 14:53:16,813 INFO L226 Difference]: Without dead ends: 22599 [2020-12-22 14:53:16,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:53:16,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22599 states. [2020-12-22 14:53:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22599 to 22559. [2020-12-22 14:53:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22559 states. [2020-12-22 14:53:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22559 states to 22559 states and 30609 transitions. [2020-12-22 14:53:18,114 INFO L78 Accepts]: Start accepts. Automaton has 22559 states and 30609 transitions. Word has length 76 [2020-12-22 14:53:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:53:18,115 INFO L481 AbstractCegarLoop]: Abstraction has 22559 states and 30609 transitions. [2020-12-22 14:53:18,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:53:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 22559 states and 30609 transitions. [2020-12-22 14:53:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 14:53:18,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:53:18,119 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 14:53:18,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:53:18,119 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:53:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:53:18,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1658364106, now seen corresponding path program 1 times [2020-12-22 14:53:18,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:53:18,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379134997] [2020-12-22 14:53:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:53:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:53:18,432 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 14:53:18,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379134997] [2020-12-22 14:53:18,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:53:18,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:53:18,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204654228] [2020-12-22 14:53:18,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:53:18,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:53:18,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:53:18,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:53:18,435 INFO L87 Difference]: Start difference. First operand 22559 states and 30609 transitions. Second operand 5 states. [2020-12-22 14:53:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:53:22,870 INFO L93 Difference]: Finished difference Result 98547 states and 133407 transitions. [2020-12-22 14:53:22,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:53:22,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-12-22 14:53:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:53:23,126 INFO L225 Difference]: With dead ends: 98547 [2020-12-22 14:53:23,126 INFO L226 Difference]: Without dead ends: 76015 [2020-12-22 14:53:23,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:53:23,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76015 states. [2020-12-22 14:53:26,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76015 to 75971. [2020-12-22 14:53:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75971 states. [2020-12-22 14:53:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75971 states to 75971 states and 102695 transitions. [2020-12-22 14:53:26,270 INFO L78 Accepts]: Start accepts. Automaton has 75971 states and 102695 transitions. Word has length 77 [2020-12-22 14:53:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:53:26,271 INFO L481 AbstractCegarLoop]: Abstraction has 75971 states and 102695 transitions. [2020-12-22 14:53:26,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:53:26,271 INFO L276 IsEmpty]: Start isEmpty. Operand 75971 states and 102695 transitions. [2020-12-22 14:53:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 14:53:26,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:53:26,275 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 14:53:26,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:53:26,276 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:53:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:53:26,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1357915664, now seen corresponding path program 1 times [2020-12-22 14:53:26,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:53:26,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049641418] [2020-12-22 14:53:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:53:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:53:26,772 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-12-22 14:53:26,799 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 14:53:26,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049641418] [2020-12-22 14:53:26,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:53:26,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:53:26,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138987999] [2020-12-22 14:53:26,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:53:26,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:53:26,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:53:26,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:53:26,804 INFO L87 Difference]: Start difference. First operand 75971 states and 102695 transitions. Second operand 5 states. [2020-12-22 14:53:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:53:34,492 INFO L93 Difference]: Finished difference Result 323287 states and 435405 transitions. [2020-12-22 14:53:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:53:34,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-22 14:53:34,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:53:35,415 INFO L225 Difference]: With dead ends: 323287 [2020-12-22 14:53:35,416 INFO L226 Difference]: Without dead ends: 247343 [2020-12-22 14:53:35,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:53:35,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247343 states. [2020-12-22 14:53:42,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247343 to 247291. [2020-12-22 14:53:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247291 states. [2020-12-22 14:53:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247291 states to 247291 states and 332325 transitions. [2020-12-22 14:53:43,597 INFO L78 Accepts]: Start accepts. Automaton has 247291 states and 332325 transitions. Word has length 78 [2020-12-22 14:53:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:53:43,600 INFO L481 AbstractCegarLoop]: Abstraction has 247291 states and 332325 transitions. [2020-12-22 14:53:43,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:53:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 247291 states and 332325 transitions. [2020-12-22 14:53:43,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 14:53:43,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:53:43,669 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:53:43,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:53:43,670 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:53:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:53:43,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1692772988, now seen corresponding path program 1 times [2020-12-22 14:53:43,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:53:43,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302014253] [2020-12-22 14:53:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:53:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:53:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:53:43,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302014253] [2020-12-22 14:53:43,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:53:43,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:53:43,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204901754] [2020-12-22 14:53:43,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:53:43,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:53:43,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:53:43,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:53:43,964 INFO L87 Difference]: Start difference. First operand 247291 states and 332325 transitions. Second operand 3 states. [2020-12-22 14:53:52,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:53:52,942 INFO L93 Difference]: Finished difference Result 614891 states and 831111 transitions. [2020-12-22 14:53:52,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:53:52,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2020-12-22 14:53:52,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:53:53,945 INFO L225 Difference]: With dead ends: 614891 [2020-12-22 14:53:53,946 INFO L226 Difference]: Without dead ends: 367627 [2020-12-22 14:53:54,396 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 14:53:55,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367627 states. [2020-12-22 14:54:03,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367627 to 363003. [2020-12-22 14:54:03,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363003 states. [2020-12-22 14:54:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363003 states to 363003 states and 492918 transitions. [2020-12-22 14:54:04,873 INFO L78 Accepts]: Start accepts. Automaton has 363003 states and 492918 transitions. Word has length 141 [2020-12-22 14:54:04,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:54:04,873 INFO L481 AbstractCegarLoop]: Abstraction has 363003 states and 492918 transitions. [2020-12-22 14:54:04,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:54:04,874 INFO L276 IsEmpty]: Start isEmpty. Operand 363003 states and 492918 transitions. [2020-12-22 14:54:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-12-22 14:54:04,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:54:04,936 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:54:04,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:54:04,937 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:54:04,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:54:04,937 INFO L82 PathProgramCache]: Analyzing trace with hash 964755318, now seen corresponding path program 1 times [2020-12-22 14:54:04,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:54:04,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874833730] [2020-12-22 14:54:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:54:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:54:05,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:54:05,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874833730] [2020-12-22 14:54:05,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:54:05,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:54:05,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277609473] [2020-12-22 14:54:05,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:54:05,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:54:05,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:54:05,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:54:05,268 INFO L87 Difference]: Start difference. First operand 363003 states and 492918 transitions. Second operand 3 states. [2020-12-22 14:54:21,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:54:21,745 INFO L93 Difference]: Finished difference Result 1018555 states and 1383978 transitions. [2020-12-22 14:54:21,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:54:21,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-12-22 14:54:21,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:54:23,317 INFO L225 Difference]: With dead ends: 1018555 [2020-12-22 14:54:23,318 INFO L226 Difference]: Without dead ends: 655579 [2020-12-22 14:54:23,871 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 14:54:25,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655579 states. [2020-12-22 14:54:44,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655579 to 655563. [2020-12-22 14:54:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655563 states. [2020-12-22 14:54:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655563 states to 655563 states and 890568 transitions. [2020-12-22 14:54:47,040 INFO L78 Accepts]: Start accepts. Automaton has 655563 states and 890568 transitions. Word has length 194 [2020-12-22 14:54:47,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:54:47,040 INFO L481 AbstractCegarLoop]: Abstraction has 655563 states and 890568 transitions. [2020-12-22 14:54:47,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:54:47,041 INFO L276 IsEmpty]: Start isEmpty. Operand 655563 states and 890568 transitions. [2020-12-22 14:54:47,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-12-22 14:54:47,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:54:47,969 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:47,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:54:47,969 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:54:47,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:54:47,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1129487273, now seen corresponding path program 1 times [2020-12-22 14:54:47,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:54:47,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433066065] [2020-12-22 14:54:47,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:54:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:54:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 14:54:48,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433066065] [2020-12-22 14:54:48,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:54:48,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:54:48,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375689199] [2020-12-22 14:54:48,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:54:48,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:54:48,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:54:48,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:54:48,300 INFO L87 Difference]: Start difference. First operand 655563 states and 890568 transitions. Second operand 3 states. [2020-12-22 14:55:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:55:27,574 INFO L93 Difference]: Finished difference Result 1964075 states and 2668064 transitions. [2020-12-22 14:55:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:55:27,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-12-22 14:55:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:55:31,422 INFO L225 Difference]: With dead ends: 1964075 [2020-12-22 14:55:31,422 INFO L226 Difference]: Without dead ends: 1308539 [2020-12-22 14:55:33,690 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 14:55:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308539 states.