/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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:48:06,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:48:06,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:48:06,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:48:06,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:48:06,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:48:06,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:48:06,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:48:06,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:48:06,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:48:06,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:48:06,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:48:06,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:48:06,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:48:06,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:48:06,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:48:06,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:48:06,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:48:06,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:48:06,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:48:06,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:48:06,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:48:06,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:48:06,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:48:06,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:48:06,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:48:06,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:48:06,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:48:06,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:48:06,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:48:06,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:48:06,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:48:06,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:48:06,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:48:06,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:48:06,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:48:06,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:48:06,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:48:06,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:48:06,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:48:06,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:48:06,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:48:06,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:48:06,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:48:06,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:48:06,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:48:06,752 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:48:06,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:48:06,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:48:06,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:48:06,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:48:06,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:48:06,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:48:06,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:48:06,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:48:06,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:48:06,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:48:06,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:48:06,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:48:06,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:48:06,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:48:06,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:48:06,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:48:06,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:48:06,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:48:06,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:48:06,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:48:06,758 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:48:07,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:48:07,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:48:07,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:48:07,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:48:07,253 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:48:07,254 INFO L432 ainManager$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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2020-12-22 14:48:07,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0166c36dd/7c328429c406424084c818c215cc06c9/FLAG6c84bd009 [2020-12-22 14:48:08,499 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:48:08,500 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2020-12-22 14:48:08,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0166c36dd/7c328429c406424084c818c215cc06c9/FLAG6c84bd009 [2020-12-22 14:48:08,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0166c36dd/7c328429c406424084c818c215cc06c9 [2020-12-22 14:48:08,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:48:08,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:48:08,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:48:08,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:48:08,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:48:08,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:48:08" (1/1) ... [2020-12-22 14:48:08,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e3642f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:08, skipping insertion in model container [2020-12-22 14:48:08,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:48:08" (1/1) ... [2020-12-22 14:48:08,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:48:09,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:48:11,479 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2020-12-22 14:48:11,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:48:11,604 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:48:12,146 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2020-12-22 14:48:12,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:48:12,488 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:48:12,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12 WrapperNode [2020-12-22 14:48:12,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:48:12,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:48:12,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:48:12,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:48:12,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12" (1/1) ... [2020-12-22 14:48:12,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12" (1/1) ... [2020-12-22 14:48:13,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:48:13,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:48:13,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:48:13,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:48:13,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12" (1/1) ... [2020-12-22 14:48:13,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12" (1/1) ... [2020-12-22 14:48:14,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12" (1/1) ... [2020-12-22 14:48:14,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12" (1/1) ... [2020-12-22 14:48:14,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12" (1/1) ... [2020-12-22 14:48:14,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12" (1/1) ... [2020-12-22 14:48:15,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12" (1/1) ... [2020-12-22 14:48:15,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:48:15,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:48:15,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:48:15,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:48:15,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12" (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 14:48:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:48:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:48:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:48:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:48:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:48:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:48:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:48:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:48:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:48:15,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:48:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:48:55,861 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:48:55,862 INFO L299 CfgBuilder]: Removed 4694 assume(true) statements. [2020-12-22 14:48:55,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:48:55 BoogieIcfgContainer [2020-12-22 14:48:55,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:48:55,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:48:55,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:48:55,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:48:55,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:48:08" (1/3) ... [2020-12-22 14:48:55,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d37b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:48:55, skipping insertion in model container [2020-12-22 14:48:55,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:12" (2/3) ... [2020-12-22 14:48:55,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d37b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:48:55, skipping insertion in model container [2020-12-22 14:48:55,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:48:55" (3/3) ... [2020-12-22 14:48:55,878 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2020-12-22 14:48:55,885 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:48:55,893 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-22 14:48:55,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-22 14:48:55,975 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:48:55,976 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:48:55,976 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:48:55,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:48:55,976 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:48:55,976 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:48:55,976 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:48:55,977 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:48:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4341 states. [2020-12-22 14:48:56,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 14:48:56,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:48:56,074 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] [2020-12-22 14:48:56,075 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:48:56,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:48:56,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1080722524, now seen corresponding path program 1 times [2020-12-22 14:48:56,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:48:56,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360684938] [2020-12-22 14:48:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:48:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:48:57,269 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 14:48:57,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360684938] [2020-12-22 14:48:57,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:48:57,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:48:57,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95211162] [2020-12-22 14:48:57,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:48:57,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:48:57,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:48:57,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:48:57,298 INFO L87 Difference]: Start difference. First operand 4341 states. Second operand 2 states. [2020-12-22 14:48:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:48:57,516 INFO L93 Difference]: Finished difference Result 8678 states and 12015 transitions. [2020-12-22 14:48:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:48:57,518 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-12-22 14:48:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:48:57,559 INFO L225 Difference]: With dead ends: 8678 [2020-12-22 14:48:57,560 INFO L226 Difference]: Without dead ends: 4326 [2020-12-22 14:48:57,574 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 14:48:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2020-12-22 14:48:57,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 4326. [2020-12-22 14:48:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4326 states. [2020-12-22 14:48:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 5961 transitions. [2020-12-22 14:48:57,769 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 5961 transitions. Word has length 22 [2020-12-22 14:48:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:48:57,770 INFO L481 AbstractCegarLoop]: Abstraction has 4326 states and 5961 transitions. [2020-12-22 14:48:57,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:48:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 5961 transitions. [2020-12-22 14:48:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 14:48:57,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:48:57,772 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] [2020-12-22 14:48:57,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:48:57,773 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:48:57,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:48:57,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1187020318, now seen corresponding path program 1 times [2020-12-22 14:48:57,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:48:57,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938104315] [2020-12-22 14:48:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:48:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:48:58,174 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 14:48:58,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938104315] [2020-12-22 14:48:58,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:48:58,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:48:58,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166381893] [2020-12-22 14:48:58,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:48:58,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:48:58,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:48:58,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:48:58,179 INFO L87 Difference]: Start difference. First operand 4326 states and 5961 transitions. Second operand 3 states. [2020-12-22 14:48:58,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:48:58,866 INFO L93 Difference]: Finished difference Result 12528 states and 17341 transitions. [2020-12-22 14:48:58,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:48:58,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 14:48:58,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:48:58,919 INFO L225 Difference]: With dead ends: 12528 [2020-12-22 14:48:58,919 INFO L226 Difference]: Without dead ends: 8217 [2020-12-22 14:48:58,934 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 14:48:58,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8217 states. [2020-12-22 14:48:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8217 to 8200. [2020-12-22 14:48:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8200 states. [2020-12-22 14:48:59,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 11385 transitions. [2020-12-22 14:48:59,276 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 11385 transitions. Word has length 22 [2020-12-22 14:48:59,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:48:59,278 INFO L481 AbstractCegarLoop]: Abstraction has 8200 states and 11385 transitions. [2020-12-22 14:48:59,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:48:59,278 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 11385 transitions. [2020-12-22 14:48:59,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 14:48:59,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:48:59,292 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] [2020-12-22 14:48:59,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:48:59,294 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:48:59,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:48:59,297 INFO L82 PathProgramCache]: Analyzing trace with hash 567191233, now seen corresponding path program 1 times [2020-12-22 14:48:59,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:48:59,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702033973] [2020-12-22 14:48:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:48:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:48:59,843 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 14:48:59,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702033973] [2020-12-22 14:48:59,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:48:59,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:48:59,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437412065] [2020-12-22 14:48:59,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:48:59,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:48:59,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:48:59,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:48:59,846 INFO L87 Difference]: Start difference. First operand 8200 states and 11385 transitions. Second operand 3 states. [2020-12-22 14:49:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:02,307 INFO L93 Difference]: Finished difference Result 16386 states and 22756 transitions. [2020-12-22 14:49:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:49:02,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 14:49:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:02,357 INFO L225 Difference]: With dead ends: 16386 [2020-12-22 14:49:02,358 INFO L226 Difference]: Without dead ends: 8200 [2020-12-22 14:49:02,374 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 14:49:02,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8200 states. [2020-12-22 14:49:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8200 to 8200. [2020-12-22 14:49:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8200 states. [2020-12-22 14:49:02,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 11384 transitions. [2020-12-22 14:49:02,681 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 11384 transitions. Word has length 40 [2020-12-22 14:49:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:02,682 INFO L481 AbstractCegarLoop]: Abstraction has 8200 states and 11384 transitions. [2020-12-22 14:49:02,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:49:02,682 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 11384 transitions. [2020-12-22 14:49:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 14:49:02,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:02,687 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] [2020-12-22 14:49:02,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:49:02,688 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:02,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:02,688 INFO L82 PathProgramCache]: Analyzing trace with hash -93621830, now seen corresponding path program 1 times [2020-12-22 14:49:02,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:02,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588394216] [2020-12-22 14:49:02,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:03,079 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 14:49:03,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588394216] [2020-12-22 14:49:03,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:49:03,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:49:03,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736443628] [2020-12-22 14:49:03,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:49:03,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:03,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:49:03,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:49:03,083 INFO L87 Difference]: Start difference. First operand 8200 states and 11384 transitions. Second operand 4 states. [2020-12-22 14:49:03,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:03,849 INFO L93 Difference]: Finished difference Result 23706 states and 32782 transitions. [2020-12-22 14:49:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:49:03,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-22 14:49:03,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:03,932 INFO L225 Difference]: With dead ends: 23706 [2020-12-22 14:49:03,932 INFO L226 Difference]: Without dead ends: 15521 [2020-12-22 14:49:03,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:49:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15521 states. [2020-12-22 14:49:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15521 to 8710. [2020-12-22 14:49:04,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8710 states. [2020-12-22 14:49:04,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8710 states to 8710 states and 12032 transitions. [2020-12-22 14:49:04,327 INFO L78 Accepts]: Start accepts. Automaton has 8710 states and 12032 transitions. Word has length 41 [2020-12-22 14:49:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:04,328 INFO L481 AbstractCegarLoop]: Abstraction has 8710 states and 12032 transitions. [2020-12-22 14:49:04,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:49:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 8710 states and 12032 transitions. [2020-12-22 14:49:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 14:49:04,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:04,330 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] [2020-12-22 14:49:04,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:49:04,331 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:04,331 INFO L82 PathProgramCache]: Analyzing trace with hash -893390283, now seen corresponding path program 1 times [2020-12-22 14:49:04,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:04,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815053736] [2020-12-22 14:49:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:04,735 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 14:49:04,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815053736] [2020-12-22 14:49:04,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:49:04,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:49:04,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859971169] [2020-12-22 14:49:04,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:49:04,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:04,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:49:04,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:49:04,738 INFO L87 Difference]: Start difference. First operand 8710 states and 12032 transitions. Second operand 4 states. [2020-12-22 14:49:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:05,486 INFO L93 Difference]: Finished difference Result 26254 states and 36022 transitions. [2020-12-22 14:49:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:49:05,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-12-22 14:49:05,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:05,535 INFO L225 Difference]: With dead ends: 26254 [2020-12-22 14:49:05,535 INFO L226 Difference]: Without dead ends: 17559 [2020-12-22 14:49:05,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:49:05,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17559 states. [2020-12-22 14:49:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17559 to 15477. [2020-12-22 14:49:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15477 states. [2020-12-22 14:49:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15477 states to 15477 states and 21359 transitions. [2020-12-22 14:49:06,179 INFO L78 Accepts]: Start accepts. Automaton has 15477 states and 21359 transitions. Word has length 42 [2020-12-22 14:49:06,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:06,181 INFO L481 AbstractCegarLoop]: Abstraction has 15477 states and 21359 transitions. [2020-12-22 14:49:06,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:49:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 15477 states and 21359 transitions. [2020-12-22 14:49:06,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 14:49:06,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:06,184 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] [2020-12-22 14:49:06,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:49:06,184 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:06,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:06,185 INFO L82 PathProgramCache]: Analyzing trace with hash 83594758, now seen corresponding path program 1 times [2020-12-22 14:49:06,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:06,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349449054] [2020-12-22 14:49:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:06,537 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 14:49:06,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349449054] [2020-12-22 14:49:06,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:49:06,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:49:06,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542709978] [2020-12-22 14:49:06,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:49:06,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:06,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:49:06,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:49:06,540 INFO L87 Difference]: Start difference. First operand 15477 states and 21359 transitions. Second operand 4 states. [2020-12-22 14:49:07,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:07,695 INFO L93 Difference]: Finished difference Result 46703 states and 63941 transitions. [2020-12-22 14:49:07,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:49:07,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-12-22 14:49:07,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:07,775 INFO L225 Difference]: With dead ends: 46703 [2020-12-22 14:49:07,776 INFO L226 Difference]: Without dead ends: 31241 [2020-12-22 14:49:07,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:49:07,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31241 states. [2020-12-22 14:49:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31241 to 27104. [2020-12-22 14:49:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27104 states. [2020-12-22 14:49:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27104 states to 27104 states and 37339 transitions. [2020-12-22 14:49:09,072 INFO L78 Accepts]: Start accepts. Automaton has 27104 states and 37339 transitions. Word has length 43 [2020-12-22 14:49:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:09,072 INFO L481 AbstractCegarLoop]: Abstraction has 27104 states and 37339 transitions. [2020-12-22 14:49:09,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:49:09,073 INFO L276 IsEmpty]: Start isEmpty. Operand 27104 states and 37339 transitions. [2020-12-22 14:49:09,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 14:49:09,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:09,074 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] [2020-12-22 14:49:09,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:49:09,075 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:09,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:09,075 INFO L82 PathProgramCache]: Analyzing trace with hash 307210307, now seen corresponding path program 1 times [2020-12-22 14:49:09,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:09,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870891754] [2020-12-22 14:49:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:09,423 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 14:49:09,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870891754] [2020-12-22 14:49:09,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:49:09,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:49:09,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279668865] [2020-12-22 14:49:09,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:49:09,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:09,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:49:09,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:49:09,427 INFO L87 Difference]: Start difference. First operand 27104 states and 37339 transitions. Second operand 4 states. [2020-12-22 14:49:11,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:11,579 INFO L93 Difference]: Finished difference Result 81872 states and 111737 transitions. [2020-12-22 14:49:11,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:49:11,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 14:49:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:11,764 INFO L225 Difference]: With dead ends: 81872 [2020-12-22 14:49:11,764 INFO L226 Difference]: Without dead ends: 54783 [2020-12-22 14:49:11,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:49:11,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54783 states. [2020-12-22 14:49:13,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54783 to 46543. [2020-12-22 14:49:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46543 states. [2020-12-22 14:49:14,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46543 states to 46543 states and 63949 transitions. [2020-12-22 14:49:14,039 INFO L78 Accepts]: Start accepts. Automaton has 46543 states and 63949 transitions. Word has length 44 [2020-12-22 14:49:14,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:14,039 INFO L481 AbstractCegarLoop]: Abstraction has 46543 states and 63949 transitions. [2020-12-22 14:49:14,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:49:14,040 INFO L276 IsEmpty]: Start isEmpty. Operand 46543 states and 63949 transitions. [2020-12-22 14:49:14,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 14:49:14,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:14,043 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] [2020-12-22 14:49:14,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:49:14,044 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:14,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:14,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1998294810, now seen corresponding path program 1 times [2020-12-22 14:49:14,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:14,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401897694] [2020-12-22 14:49:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:49:14,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401897694] [2020-12-22 14:49:14,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:49:14,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:49:14,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3031134] [2020-12-22 14:49:14,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:49:14,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:14,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:49:14,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:49:14,444 INFO L87 Difference]: Start difference. First operand 46543 states and 63949 transitions. Second operand 3 states. [2020-12-22 14:49:15,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:15,502 INFO L93 Difference]: Finished difference Result 46543 states and 63949 transitions. [2020-12-22 14:49:15,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:49:15,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 14:49:15,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:15,602 INFO L225 Difference]: With dead ends: 46543 [2020-12-22 14:49:15,602 INFO L226 Difference]: Without dead ends: 46541 [2020-12-22 14:49:15,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:49:15,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46541 states. [2020-12-22 14:49:16,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46541 to 46541. [2020-12-22 14:49:16,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46541 states. [2020-12-22 14:49:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46541 states to 46541 states and 63932 transitions. [2020-12-22 14:49:17,077 INFO L78 Accepts]: Start accepts. Automaton has 46541 states and 63932 transitions. Word has length 44 [2020-12-22 14:49:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:17,077 INFO L481 AbstractCegarLoop]: Abstraction has 46541 states and 63932 transitions. [2020-12-22 14:49:17,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:49:17,078 INFO L276 IsEmpty]: Start isEmpty. Operand 46541 states and 63932 transitions. [2020-12-22 14:49:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 14:49:17,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:17,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:49:17,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 14:49:17,079 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:17,080 INFO L82 PathProgramCache]: Analyzing trace with hash 750563296, now seen corresponding path program 1 times [2020-12-22 14:49:17,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:17,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542377281] [2020-12-22 14:49:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 14:49:17,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542377281] [2020-12-22 14:49:17,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:49:17,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:49:17,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798119816] [2020-12-22 14:49:17,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:49:17,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:17,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:49:17,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:49:17,411 INFO L87 Difference]: Start difference. First operand 46541 states and 63932 transitions. Second operand 5 states. [2020-12-22 14:49:20,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:20,064 INFO L93 Difference]: Finished difference Result 128501 states and 175688 transitions. [2020-12-22 14:49:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 14:49:20,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 14:49:20,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:20,219 INFO L225 Difference]: With dead ends: 128501 [2020-12-22 14:49:20,220 INFO L226 Difference]: Without dead ends: 81975 [2020-12-22 14:49:20,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 14:49:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81975 states. [2020-12-22 14:49:22,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81975 to 46621. [2020-12-22 14:49:22,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46621 states. [2020-12-22 14:49:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46621 states to 46621 states and 64012 transitions. [2020-12-22 14:49:22,129 INFO L78 Accepts]: Start accepts. Automaton has 46621 states and 64012 transitions. Word has length 49 [2020-12-22 14:49:22,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:22,129 INFO L481 AbstractCegarLoop]: Abstraction has 46621 states and 64012 transitions. [2020-12-22 14:49:22,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:49:22,130 INFO L276 IsEmpty]: Start isEmpty. Operand 46621 states and 64012 transitions. [2020-12-22 14:49:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 14:49:22,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:22,133 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] [2020-12-22 14:49:22,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 14:49:22,133 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:22,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:22,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1159627793, now seen corresponding path program 1 times [2020-12-22 14:49:22,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:22,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198542432] [2020-12-22 14:49:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:22,877 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 14:49:22,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198542432] [2020-12-22 14:49:22,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:49:22,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:49:22,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806067136] [2020-12-22 14:49:22,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:49:22,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:22,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:49:22,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:49:22,880 INFO L87 Difference]: Start difference. First operand 46621 states and 64012 transitions. Second operand 3 states. [2020-12-22 14:49:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:24,554 INFO L93 Difference]: Finished difference Result 93323 states and 128121 transitions. [2020-12-22 14:49:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:49:24,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-12-22 14:49:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:24,617 INFO L225 Difference]: With dead ends: 93323 [2020-12-22 14:49:24,618 INFO L226 Difference]: Without dead ends: 46717 [2020-12-22 14:49:24,676 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 14:49:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46717 states. [2020-12-22 14:49:25,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46717 to 46637. [2020-12-22 14:49:25,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46637 states. [2020-12-22 14:49:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46637 states to 46637 states and 64028 transitions. [2020-12-22 14:49:26,037 INFO L78 Accepts]: Start accepts. Automaton has 46637 states and 64028 transitions. Word has length 120 [2020-12-22 14:49:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:26,038 INFO L481 AbstractCegarLoop]: Abstraction has 46637 states and 64028 transitions. [2020-12-22 14:49:26,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:49:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 46637 states and 64028 transitions. [2020-12-22 14:49:26,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-22 14:49:26,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:26,042 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] [2020-12-22 14:49:26,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 14:49:26,042 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:26,042 INFO L82 PathProgramCache]: Analyzing trace with hash 160933319, now seen corresponding path program 1 times [2020-12-22 14:49:26,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:26,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501266743] [2020-12-22 14:49:26,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:49:26,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501266743] [2020-12-22 14:49:26,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922426027] [2020-12-22 14:49:26,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:49:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:29,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 4244 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 14:49:29,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:49:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:49:29,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 14:49:29,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 14:49:29,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109215836] [2020-12-22 14:49:29,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:49:29,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:29,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:49:29,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:49:29,778 INFO L87 Difference]: Start difference. First operand 46637 states and 64028 transitions. Second operand 5 states. [2020-12-22 14:49:31,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:31,990 INFO L93 Difference]: Finished difference Result 93355 states and 128153 transitions. [2020-12-22 14:49:31,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:49:31,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-12-22 14:49:31,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:32,160 INFO L225 Difference]: With dead ends: 93355 [2020-12-22 14:49:32,161 INFO L226 Difference]: Without dead ends: 46733 [2020-12-22 14:49:32,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:49:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46733 states. [2020-12-22 14:49:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46733 to 46733. [2020-12-22 14:49:34,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46733 states. [2020-12-22 14:49:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46733 states to 46733 states and 64124 transitions. [2020-12-22 14:49:34,447 INFO L78 Accepts]: Start accepts. Automaton has 46733 states and 64124 transitions. Word has length 126 [2020-12-22 14:49:34,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:34,447 INFO L481 AbstractCegarLoop]: Abstraction has 46733 states and 64124 transitions. [2020-12-22 14:49:34,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:49:34,447 INFO L276 IsEmpty]: Start isEmpty. Operand 46733 states and 64124 transitions. [2020-12-22 14:49:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 14:49:34,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:34,450 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:49:34,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 14:49:34,651 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:34,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:34,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2039287199, now seen corresponding path program 2 times [2020-12-22 14:49:34,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:34,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679444337] [2020-12-22 14:49:34,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 14:49:35,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679444337] [2020-12-22 14:49:35,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:49:35,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:49:35,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268724698] [2020-12-22 14:49:35,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:49:35,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:35,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:49:35,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:49:35,461 INFO L87 Difference]: Start difference. First operand 46733 states and 64124 transitions. Second operand 4 states. [2020-12-22 14:49:37,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:37,963 INFO L93 Difference]: Finished difference Result 136523 states and 187961 transitions. [2020-12-22 14:49:37,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:49:37,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-12-22 14:49:37,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:38,219 INFO L225 Difference]: With dead ends: 136523 [2020-12-22 14:49:38,219 INFO L226 Difference]: Without dead ends: 89805 [2020-12-22 14:49:38,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:49:38,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89805 states. [2020-12-22 14:49:40,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89805 to 46765. [2020-12-22 14:49:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46765 states. [2020-12-22 14:49:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46765 states to 46765 states and 64156 transitions. [2020-12-22 14:49:40,615 INFO L78 Accepts]: Start accepts. Automaton has 46765 states and 64156 transitions. Word has length 132 [2020-12-22 14:49:40,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:40,615 INFO L481 AbstractCegarLoop]: Abstraction has 46765 states and 64156 transitions. [2020-12-22 14:49:40,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:49:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand 46765 states and 64156 transitions. [2020-12-22 14:49:40,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 14:49:40,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:40,619 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:49:40,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 14:49:40,619 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:40,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:40,620 INFO L82 PathProgramCache]: Analyzing trace with hash 66372555, now seen corresponding path program 1 times [2020-12-22 14:49:40,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:40,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952510579] [2020-12-22 14:49:40,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 14:49:41,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952510579] [2020-12-22 14:49:41,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:49:41,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:49:41,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568593756] [2020-12-22 14:49:41,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:49:41,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:41,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:49:41,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:49:41,220 INFO L87 Difference]: Start difference. First operand 46765 states and 64156 transitions. Second operand 5 states. [2020-12-22 14:49:45,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:45,809 INFO L93 Difference]: Finished difference Result 182595 states and 251325 transitions. [2020-12-22 14:49:45,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 14:49:45,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-12-22 14:49:45,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:46,066 INFO L225 Difference]: With dead ends: 182595 [2020-12-22 14:49:46,066 INFO L226 Difference]: Without dead ends: 135845 [2020-12-22 14:49:46,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:49:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135845 states. [2020-12-22 14:49:48,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135845 to 46789. [2020-12-22 14:49:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46789 states. [2020-12-22 14:49:48,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46789 states to 46789 states and 64180 transitions. [2020-12-22 14:49:48,931 INFO L78 Accepts]: Start accepts. Automaton has 46789 states and 64180 transitions. Word has length 155 [2020-12-22 14:49:48,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:48,932 INFO L481 AbstractCegarLoop]: Abstraction has 46789 states and 64180 transitions. [2020-12-22 14:49:48,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:49:48,932 INFO L276 IsEmpty]: Start isEmpty. Operand 46789 states and 64180 transitions. [2020-12-22 14:49:48,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 14:49:48,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:48,935 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:49:48,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 14:49:48,935 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:48,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:48,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1746790569, now seen corresponding path program 1 times [2020-12-22 14:49:48,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:48,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213193063] [2020-12-22 14:49:48,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 14:49:49,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213193063] [2020-12-22 14:49:49,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:49:49,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:49:49,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943467445] [2020-12-22 14:49:49,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:49:49,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:49,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:49:49,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:49:49,672 INFO L87 Difference]: Start difference. First operand 46789 states and 64180 transitions. Second operand 4 states. [2020-12-22 14:49:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:49:55,353 INFO L93 Difference]: Finished difference Result 183803 states and 252729 transitions. [2020-12-22 14:49:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:49:55,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-12-22 14:49:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:49:55,729 INFO L225 Difference]: With dead ends: 183803 [2020-12-22 14:49:55,729 INFO L226 Difference]: Without dead ends: 137029 [2020-12-22 14:49:55,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 14:49:55,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137029 states. [2020-12-22 14:49:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137029 to 46821. [2020-12-22 14:49:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46821 states. [2020-12-22 14:49:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46821 states to 46821 states and 64212 transitions. [2020-12-22 14:49:58,823 INFO L78 Accepts]: Start accepts. Automaton has 46821 states and 64212 transitions. Word has length 163 [2020-12-22 14:49:58,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:49:58,823 INFO L481 AbstractCegarLoop]: Abstraction has 46821 states and 64212 transitions. [2020-12-22 14:49:58,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:49:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 46821 states and 64212 transitions. [2020-12-22 14:49:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 14:49:58,828 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:49:58,828 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:58,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 14:49:58,829 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:49:58,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:49:58,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1606018237, now seen corresponding path program 1 times [2020-12-22 14:49:58,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:49:58,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425323196] [2020-12-22 14:49:58,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:49:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:49:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 14:49:59,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425323196] [2020-12-22 14:49:59,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:49:59,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:49:59,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258403753] [2020-12-22 14:49:59,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:49:59,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:49:59,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:49:59,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:49:59,546 INFO L87 Difference]: Start difference. First operand 46821 states and 64212 transitions. Second operand 4 states. [2020-12-22 14:50:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:50:07,818 INFO L93 Difference]: Finished difference Result 220731 states and 305225 transitions. [2020-12-22 14:50:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:50:07,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-12-22 14:50:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:50:08,135 INFO L225 Difference]: With dead ends: 220731 [2020-12-22 14:50:08,135 INFO L226 Difference]: Without dead ends: 173925 [2020-12-22 14:50:08,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:50:08,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173925 states. [2020-12-22 14:50:11,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173925 to 46853. [2020-12-22 14:50:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46853 states. [2020-12-22 14:50:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46853 states to 46853 states and 64244 transitions. [2020-12-22 14:50:11,851 INFO L78 Accepts]: Start accepts. Automaton has 46853 states and 64244 transitions. Word has length 225 [2020-12-22 14:50:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:50:11,853 INFO L481 AbstractCegarLoop]: Abstraction has 46853 states and 64244 transitions. [2020-12-22 14:50:11,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:50:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 46853 states and 64244 transitions. [2020-12-22 14:50:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 14:50:11,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:50:11,858 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:11,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 14:50:11,859 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:50:11,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:50:11,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1651282745, now seen corresponding path program 1 times [2020-12-22 14:50:11,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:50:11,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849903375] [2020-12-22 14:50:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:50:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:50:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 14:50:12,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849903375] [2020-12-22 14:50:12,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:50:12,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:50:12,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656415570] [2020-12-22 14:50:12,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:50:12,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:50:12,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:50:12,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:50:12,546 INFO L87 Difference]: Start difference. First operand 46853 states and 64244 transitions. Second operand 4 states. [2020-12-22 14:50:15,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:50:15,553 INFO L93 Difference]: Finished difference Result 92558 states and 127230 transitions. [2020-12-22 14:50:15,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:50:15,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-12-22 14:50:15,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:50:15,610 INFO L225 Difference]: With dead ends: 92558 [2020-12-22 14:50:15,610 INFO L226 Difference]: Without dead ends: 45720 [2020-12-22 14:50:15,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:50:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45720 states. [2020-12-22 14:50:18,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45720 to 45445. [2020-12-22 14:50:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45445 states. [2020-12-22 14:50:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45445 states to 45445 states and 62580 transitions. [2020-12-22 14:50:18,425 INFO L78 Accepts]: Start accepts. Automaton has 45445 states and 62580 transitions. Word has length 225 [2020-12-22 14:50:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:50:18,425 INFO L481 AbstractCegarLoop]: Abstraction has 45445 states and 62580 transitions. [2020-12-22 14:50:18,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:50:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 45445 states and 62580 transitions. [2020-12-22 14:50:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 14:50:18,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:50:18,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:18,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 14:50:18,430 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:50:18,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:50:18,431 INFO L82 PathProgramCache]: Analyzing trace with hash -337640293, now seen corresponding path program 1 times [2020-12-22 14:50:18,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:50:18,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616745462] [2020-12-22 14:50:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:50:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:50:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 14:50:20,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616745462] [2020-12-22 14:50:20,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:50:20,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:50:20,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73263607] [2020-12-22 14:50:20,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:50:20,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:50:20,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:50:20,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:50:20,185 INFO L87 Difference]: Start difference. First operand 45445 states and 62580 transitions. Second operand 5 states. [2020-12-22 14:50:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:50:26,388 INFO L93 Difference]: Finished difference Result 132507 states and 183209 transitions. [2020-12-22 14:50:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:50:26,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-12-22 14:50:26,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:50:26,523 INFO L225 Difference]: With dead ends: 132507 [2020-12-22 14:50:26,523 INFO L226 Difference]: Without dead ends: 87077 [2020-12-22 14:50:26,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:50:26,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87077 states. [2020-12-22 14:50:30,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87077 to 45493. [2020-12-22 14:50:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45493 states. [2020-12-22 14:50:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45493 states to 45493 states and 62628 transitions. [2020-12-22 14:50:30,385 INFO L78 Accepts]: Start accepts. Automaton has 45493 states and 62628 transitions. Word has length 241 [2020-12-22 14:50:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:50:30,385 INFO L481 AbstractCegarLoop]: Abstraction has 45493 states and 62628 transitions. [2020-12-22 14:50:30,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:50:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 45493 states and 62628 transitions. [2020-12-22 14:50:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-12-22 14:50:30,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:50:30,388 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:30,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 14:50:30,388 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:50:30,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:50:30,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1238614163, now seen corresponding path program 1 times [2020-12-22 14:50:30,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:50:30,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476508792] [2020-12-22 14:50:30,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:50:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:50:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 14:50:31,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476508792] [2020-12-22 14:50:31,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:50:31,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:50:31,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617850605] [2020-12-22 14:50:31,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:50:31,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:50:31,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:50:31,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:50:31,770 INFO L87 Difference]: Start difference. First operand 45493 states and 62628 transitions. Second operand 5 states. [2020-12-22 14:50:45,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:50:45,575 INFO L93 Difference]: Finished difference Result 217371 states and 301001 transitions. [2020-12-22 14:50:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 14:50:45,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-12-22 14:50:45,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:50:45,879 INFO L225 Difference]: With dead ends: 217371 [2020-12-22 14:50:45,880 INFO L226 Difference]: Without dead ends: 171893 [2020-12-22 14:50:46,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 14:50:46,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171893 states. [2020-12-22 14:50:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171893 to 45541. [2020-12-22 14:50:50,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45541 states. [2020-12-22 14:50:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45541 states to 45541 states and 62676 transitions. [2020-12-22 14:50:51,051 INFO L78 Accepts]: Start accepts. Automaton has 45541 states and 62676 transitions. Word has length 244 [2020-12-22 14:50:51,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:50:51,052 INFO L481 AbstractCegarLoop]: Abstraction has 45541 states and 62676 transitions. [2020-12-22 14:50:51,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:50:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 45541 states and 62676 transitions. [2020-12-22 14:50:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-12-22 14:50:51,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:50:51,054 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:51,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 14:50:51,055 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_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 14:50:51,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:50:51,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1196135599, now seen corresponding path program 1 times [2020-12-22 14:50:51,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:50:51,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051558333] [2020-12-22 14:50:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:50:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat