/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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:23:01,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:23:01,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:23:01,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:23:01,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:23:01,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:23:01,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:23:01,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:23:01,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:23:01,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:23:01,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:23:01,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:23:01,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:23:01,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:23:01,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:23:01,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:23:01,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:23:01,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:23:01,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:23:01,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:23:01,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:23:01,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:23:01,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:23:01,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:23:01,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:23:01,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:23:01,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:23:01,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:23:01,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:23:01,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:23:01,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:23:01,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:23:01,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:23:01,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:23:01,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:23:01,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:23:01,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:23:01,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:23:01,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:23:01,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:23:01,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:23:01,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:23:01,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:23:01,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:23:01,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:23:01,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:23:01,681 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:23:01,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:23:01,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:23:01,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:23:01,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:23:01,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:23:01,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:23:01,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:23:01,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:23:01,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:23:01,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:23:01,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:23:01,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:23:01,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:23:01,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:23:01,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:23:01,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:23:01,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:23:01,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:23:01,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:23:01,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:23:01,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:23:02,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:23:02,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:23:02,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:23:02,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:23:02,127 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:23:02,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2020-12-22 14:23:02,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b08c9b0/d7efd687b9fb4a71a8d62157e941cacf/FLAG46d0cb7e7 [2020-12-22 14:23:03,228 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:23:03,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2020-12-22 14:23:03,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b08c9b0/d7efd687b9fb4a71a8d62157e941cacf/FLAG46d0cb7e7 [2020-12-22 14:23:03,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b08c9b0/d7efd687b9fb4a71a8d62157e941cacf [2020-12-22 14:23:03,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:23:03,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:23:03,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:23:03,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:23:03,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:23:03,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:23:03" (1/1) ... [2020-12-22 14:23:03,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533df837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:03, skipping insertion in model container [2020-12-22 14:23:03,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:23:03" (1/1) ... [2020-12-22 14:23:03,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:23:03,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:23:05,876 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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2020-12-22 14:23:06,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:23:06,112 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:23:06,630 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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2020-12-22 14:23:06,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:23:06,954 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:23:06,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06 WrapperNode [2020-12-22 14:23:06,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:23:06,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:23:06,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:23:06,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:23:06,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06" (1/1) ... [2020-12-22 14:23:07,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06" (1/1) ... [2020-12-22 14:23:07,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:23:07,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:23:07,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:23:07,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:23:07,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06" (1/1) ... [2020-12-22 14:23:07,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06" (1/1) ... [2020-12-22 14:23:07,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06" (1/1) ... [2020-12-22 14:23:07,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06" (1/1) ... [2020-12-22 14:23:07,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06" (1/1) ... [2020-12-22 14:23:08,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06" (1/1) ... [2020-12-22 14:23:08,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06" (1/1) ... [2020-12-22 14:23:08,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:23:08,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:23:08,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:23:08,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:23:08,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06" (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 14:23:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:23:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:23:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:23:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:23:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:23:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:23:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:23:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:23:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:23:08,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:23:08,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:23:30,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:23:30,795 INFO L299 CfgBuilder]: Removed 1242 assume(true) statements. [2020-12-22 14:23:30,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:23:30 BoogieIcfgContainer [2020-12-22 14:23:30,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:23:30,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:23:30,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:23:30,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:23:30,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:23:03" (1/3) ... [2020-12-22 14:23:30,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e41cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:23:30, skipping insertion in model container [2020-12-22 14:23:30,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:23:06" (2/3) ... [2020-12-22 14:23:30,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e41cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:23:30, skipping insertion in model container [2020-12-22 14:23:30,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:23:30" (3/3) ... [2020-12-22 14:23:30,814 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2020-12-22 14:23:30,824 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:23:30,831 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 14:23:30,853 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 14:23:30,900 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:23:30,900 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:23:30,900 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:23:30,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:23:30,900 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:23:30,900 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:23:30,901 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:23:30,901 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:23:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states. [2020-12-22 14:23:30,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 14:23:30,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:30,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:30,962 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:30,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2042928576, now seen corresponding path program 1 times [2020-12-22 14:23:30,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:30,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81675059] [2020-12-22 14:23:30,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:32,019 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 14:23:32,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81675059] [2020-12-22 14:23:32,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:32,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:23:32,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201998116] [2020-12-22 14:23:32,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:23:32,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:32,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:23:32,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:23:32,053 INFO L87 Difference]: Start difference. First operand 1974 states. Second operand 2 states. [2020-12-22 14:23:32,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:32,225 INFO L93 Difference]: Finished difference Result 3944 states and 5765 transitions. [2020-12-22 14:23:32,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:23:32,227 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 66 [2020-12-22 14:23:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:32,267 INFO L225 Difference]: With dead ends: 3944 [2020-12-22 14:23:32,268 INFO L226 Difference]: Without dead ends: 1965 [2020-12-22 14:23:32,281 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 14:23:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-12-22 14:23:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1965. [2020-12-22 14:23:32,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-12-22 14:23:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2853 transitions. [2020-12-22 14:23:32,449 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2853 transitions. Word has length 66 [2020-12-22 14:23:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:32,450 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 2853 transitions. [2020-12-22 14:23:32,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:23:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2853 transitions. [2020-12-22 14:23:32,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 14:23:32,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:32,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:32,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:23:32,458 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:32,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:32,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1498030002, now seen corresponding path program 1 times [2020-12-22 14:23:32,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:32,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697926968] [2020-12-22 14:23:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:32,894 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 14:23:32,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697926968] [2020-12-22 14:23:32,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:32,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:23:32,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087759818] [2020-12-22 14:23:32,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:23:32,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:32,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:23:32,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:23:32,898 INFO L87 Difference]: Start difference. First operand 1965 states and 2853 transitions. Second operand 3 states. [2020-12-22 14:23:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:35,226 INFO L93 Difference]: Finished difference Result 5761 states and 8411 transitions. [2020-12-22 14:23:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:23:35,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 14:23:35,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:35,249 INFO L225 Difference]: With dead ends: 5761 [2020-12-22 14:23:35,250 INFO L226 Difference]: Without dead ends: 3853 [2020-12-22 14:23:35,257 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 14:23:35,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2020-12-22 14:23:35,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2020-12-22 14:23:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3851 states. [2020-12-22 14:23:35,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5618 transitions. [2020-12-22 14:23:35,395 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5618 transitions. Word has length 66 [2020-12-22 14:23:35,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:35,397 INFO L481 AbstractCegarLoop]: Abstraction has 3851 states and 5618 transitions. [2020-12-22 14:23:35,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:23:35,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5618 transitions. [2020-12-22 14:23:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 14:23:35,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:35,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:35,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:23:35,409 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:35,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:35,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1146020226, now seen corresponding path program 1 times [2020-12-22 14:23:35,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:35,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266561287] [2020-12-22 14:23:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:35,834 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 14:23:35,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266561287] [2020-12-22 14:23:35,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:35,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:23:35,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661567638] [2020-12-22 14:23:35,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:23:35,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:35,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:23:35,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:23:35,837 INFO L87 Difference]: Start difference. First operand 3851 states and 5618 transitions. Second operand 3 states. [2020-12-22 14:23:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:35,937 INFO L93 Difference]: Finished difference Result 3851 states and 5618 transitions. [2020-12-22 14:23:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:23:35,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 14:23:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:35,960 INFO L225 Difference]: With dead ends: 3851 [2020-12-22 14:23:35,960 INFO L226 Difference]: Without dead ends: 3849 [2020-12-22 14:23:35,970 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 14:23:35,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3849 states. [2020-12-22 14:23:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3849 to 3849. [2020-12-22 14:23:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3849 states. [2020-12-22 14:23:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 5616 transitions. [2020-12-22 14:23:36,103 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 5616 transitions. Word has length 70 [2020-12-22 14:23:36,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:36,106 INFO L481 AbstractCegarLoop]: Abstraction has 3849 states and 5616 transitions. [2020-12-22 14:23:36,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:23:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 5616 transitions. [2020-12-22 14:23:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 14:23:36,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:36,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:36,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:23:36,112 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:36,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1166875682, now seen corresponding path program 1 times [2020-12-22 14:23:36,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:36,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461998995] [2020-12-22 14:23:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:36,526 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 14:23:36,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461998995] [2020-12-22 14:23:36,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:36,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:23:36,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594731873] [2020-12-22 14:23:36,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:23:36,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:36,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:23:36,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:23:36,530 INFO L87 Difference]: Start difference. First operand 3849 states and 5616 transitions. Second operand 3 states. [2020-12-22 14:23:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:36,635 INFO L93 Difference]: Finished difference Result 3849 states and 5616 transitions. [2020-12-22 14:23:36,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:23:36,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 14:23:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:36,658 INFO L225 Difference]: With dead ends: 3849 [2020-12-22 14:23:36,658 INFO L226 Difference]: Without dead ends: 3847 [2020-12-22 14:23:36,660 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 14:23:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2020-12-22 14:23:36,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 3847. [2020-12-22 14:23:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3847 states. [2020-12-22 14:23:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3847 states to 3847 states and 5614 transitions. [2020-12-22 14:23:36,790 INFO L78 Accepts]: Start accepts. Automaton has 3847 states and 5614 transitions. Word has length 71 [2020-12-22 14:23:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:36,790 INFO L481 AbstractCegarLoop]: Abstraction has 3847 states and 5614 transitions. [2020-12-22 14:23:36,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:23:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3847 states and 5614 transitions. [2020-12-22 14:23:36,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 14:23:36,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:36,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:36,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:23:36,792 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:36,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:36,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1813394808, now seen corresponding path program 1 times [2020-12-22 14:23:36,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:36,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525482955] [2020-12-22 14:23:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:37,259 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 14:23:37,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525482955] [2020-12-22 14:23:37,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:37,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:23:37,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946634342] [2020-12-22 14:23:37,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:23:37,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:37,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:23:37,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:23:37,262 INFO L87 Difference]: Start difference. First operand 3847 states and 5614 transitions. Second operand 3 states. [2020-12-22 14:23:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:37,407 INFO L93 Difference]: Finished difference Result 3847 states and 5614 transitions. [2020-12-22 14:23:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:23:37,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 14:23:37,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:37,430 INFO L225 Difference]: With dead ends: 3847 [2020-12-22 14:23:37,431 INFO L226 Difference]: Without dead ends: 3845 [2020-12-22 14:23:37,433 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 14:23:37,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2020-12-22 14:23:37,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3845. [2020-12-22 14:23:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3845 states. [2020-12-22 14:23:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5612 transitions. [2020-12-22 14:23:37,614 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5612 transitions. Word has length 72 [2020-12-22 14:23:37,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:37,616 INFO L481 AbstractCegarLoop]: Abstraction has 3845 states and 5612 transitions. [2020-12-22 14:23:37,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:23:37,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5612 transitions. [2020-12-22 14:23:37,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 14:23:37,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:37,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:37,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:23:37,619 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:37,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:37,620 INFO L82 PathProgramCache]: Analyzing trace with hash -380651224, now seen corresponding path program 1 times [2020-12-22 14:23:37,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:37,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494933023] [2020-12-22 14:23:37,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:38,017 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 14:23:38,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494933023] [2020-12-22 14:23:38,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:38,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:23:38,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381892929] [2020-12-22 14:23:38,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:23:38,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:38,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:23:38,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:23:38,021 INFO L87 Difference]: Start difference. First operand 3845 states and 5612 transitions. Second operand 3 states. [2020-12-22 14:23:38,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:38,327 INFO L93 Difference]: Finished difference Result 7615 states and 11138 transitions. [2020-12-22 14:23:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:23:38,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 14:23:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:38,392 INFO L225 Difference]: With dead ends: 7615 [2020-12-22 14:23:38,393 INFO L226 Difference]: Without dead ends: 7606 [2020-12-22 14:23:38,397 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 14:23:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2020-12-22 14:23:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 7606. [2020-12-22 14:23:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7606 states. [2020-12-22 14:23:38,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7606 states to 7606 states and 11126 transitions. [2020-12-22 14:23:38,755 INFO L78 Accepts]: Start accepts. Automaton has 7606 states and 11126 transitions. Word has length 73 [2020-12-22 14:23:38,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:38,756 INFO L481 AbstractCegarLoop]: Abstraction has 7606 states and 11126 transitions. [2020-12-22 14:23:38,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:23:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 7606 states and 11126 transitions. [2020-12-22 14:23:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 14:23:38,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:38,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:38,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:23:38,774 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:38,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:38,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1086031317, now seen corresponding path program 1 times [2020-12-22 14:23:38,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:38,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365548128] [2020-12-22 14:23:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:23:39,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365548128] [2020-12-22 14:23:39,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:39,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:23:39,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144043983] [2020-12-22 14:23:39,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:23:39,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:39,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:23:39,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:23:39,144 INFO L87 Difference]: Start difference. First operand 7606 states and 11126 transitions. Second operand 3 states. [2020-12-22 14:23:39,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:39,912 INFO L93 Difference]: Finished difference Result 15302 states and 22402 transitions. [2020-12-22 14:23:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:23:39,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-22 14:23:39,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:39,930 INFO L225 Difference]: With dead ends: 15302 [2020-12-22 14:23:39,931 INFO L226 Difference]: Without dead ends: 7753 [2020-12-22 14:23:39,944 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 14:23:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7753 states. [2020-12-22 14:23:40,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7753 to 7746. [2020-12-22 14:23:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7746 states. [2020-12-22 14:23:40,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7746 states to 7746 states and 11330 transitions. [2020-12-22 14:23:40,207 INFO L78 Accepts]: Start accepts. Automaton has 7746 states and 11330 transitions. Word has length 138 [2020-12-22 14:23:40,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:40,207 INFO L481 AbstractCegarLoop]: Abstraction has 7746 states and 11330 transitions. [2020-12-22 14:23:40,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:23:40,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7746 states and 11330 transitions. [2020-12-22 14:23:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 14:23:40,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:40,217 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:40,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:23:40,218 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:40,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:40,218 INFO L82 PathProgramCache]: Analyzing trace with hash -66254471, now seen corresponding path program 1 times [2020-12-22 14:23:40,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:40,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448527557] [2020-12-22 14:23:40,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:23:40,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448527557] [2020-12-22 14:23:40,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:40,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:23:40,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867717773] [2020-12-22 14:23:40,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:23:40,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:40,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:23:40,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:23:40,548 INFO L87 Difference]: Start difference. First operand 7746 states and 11330 transitions. Second operand 3 states. [2020-12-22 14:23:40,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:40,833 INFO L93 Difference]: Finished difference Result 15439 states and 22604 transitions. [2020-12-22 14:23:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:23:40,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-12-22 14:23:40,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:40,857 INFO L225 Difference]: With dead ends: 15439 [2020-12-22 14:23:40,857 INFO L226 Difference]: Without dead ends: 7750 [2020-12-22 14:23:40,874 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 14:23:40,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2020-12-22 14:23:41,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 7750. [2020-12-22 14:23:41,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7750 states. [2020-12-22 14:23:41,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 11334 transitions. [2020-12-22 14:23:41,116 INFO L78 Accepts]: Start accepts. Automaton has 7750 states and 11334 transitions. Word has length 149 [2020-12-22 14:23:41,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:41,117 INFO L481 AbstractCegarLoop]: Abstraction has 7750 states and 11334 transitions. [2020-12-22 14:23:41,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:23:41,117 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states and 11334 transitions. [2020-12-22 14:23:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 14:23:41,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:41,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:41,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 14:23:41,132 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash 135569463, now seen corresponding path program 1 times [2020-12-22 14:23:41,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:41,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19477185] [2020-12-22 14:23:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:23:41,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19477185] [2020-12-22 14:23:41,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:41,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:23:41,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708301133] [2020-12-22 14:23:41,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:23:41,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:41,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:23:41,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:23:41,551 INFO L87 Difference]: Start difference. First operand 7750 states and 11334 transitions. Second operand 4 states. [2020-12-22 14:23:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:42,613 INFO L93 Difference]: Finished difference Result 30121 states and 43942 transitions. [2020-12-22 14:23:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:23:42,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-12-22 14:23:42,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:42,671 INFO L225 Difference]: With dead ends: 30121 [2020-12-22 14:23:42,671 INFO L226 Difference]: Without dead ends: 22428 [2020-12-22 14:23:42,692 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 14:23:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22428 states. [2020-12-22 14:23:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22428 to 7758. [2020-12-22 14:23:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7758 states. [2020-12-22 14:23:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 11342 transitions. [2020-12-22 14:23:43,156 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 11342 transitions. Word has length 149 [2020-12-22 14:23:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:43,156 INFO L481 AbstractCegarLoop]: Abstraction has 7758 states and 11342 transitions. [2020-12-22 14:23:43,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:23:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 11342 transitions. [2020-12-22 14:23:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 14:23:43,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:43,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:43,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 14:23:43,168 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:43,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:43,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1329186096, now seen corresponding path program 1 times [2020-12-22 14:23:43,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:43,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361569551] [2020-12-22 14:23:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:23:43,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361569551] [2020-12-22 14:23:43,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:43,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:23:43,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281598786] [2020-12-22 14:23:43,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:23:43,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:43,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:23:43,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:23:43,505 INFO L87 Difference]: Start difference. First operand 7758 states and 11342 transitions. Second operand 4 states. [2020-12-22 14:23:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:44,495 INFO L93 Difference]: Finished difference Result 27737 states and 40466 transitions. [2020-12-22 14:23:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:23:44,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-12-22 14:23:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:44,546 INFO L225 Difference]: With dead ends: 27737 [2020-12-22 14:23:44,546 INFO L226 Difference]: Without dead ends: 20036 [2020-12-22 14:23:44,562 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 14:23:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20036 states. [2020-12-22 14:23:45,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20036 to 7766. [2020-12-22 14:23:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7766 states. [2020-12-22 14:23:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 11350 transitions. [2020-12-22 14:23:45,055 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 11350 transitions. Word has length 168 [2020-12-22 14:23:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:45,055 INFO L481 AbstractCegarLoop]: Abstraction has 7766 states and 11350 transitions. [2020-12-22 14:23:45,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:23:45,056 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 11350 transitions. [2020-12-22 14:23:45,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-22 14:23:45,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:45,067 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:45,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 14:23:45,067 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:45,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:45,068 INFO L82 PathProgramCache]: Analyzing trace with hash -506384738, now seen corresponding path program 1 times [2020-12-22 14:23:45,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:45,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585429327] [2020-12-22 14:23:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:45,531 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:23:45,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585429327] [2020-12-22 14:23:45,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:45,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:23:45,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962345737] [2020-12-22 14:23:45,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:23:45,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:45,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:23:45,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:23:45,535 INFO L87 Difference]: Start difference. First operand 7766 states and 11350 transitions. Second operand 3 states. [2020-12-22 14:23:46,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:46,338 INFO L93 Difference]: Finished difference Result 23176 states and 33906 transitions. [2020-12-22 14:23:46,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:23:46,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-12-22 14:23:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:46,373 INFO L225 Difference]: With dead ends: 23176 [2020-12-22 14:23:46,373 INFO L226 Difference]: Without dead ends: 15467 [2020-12-22 14:23:46,391 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 14:23:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2020-12-22 14:23:46,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 7906. [2020-12-22 14:23:46,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7906 states. [2020-12-22 14:23:46,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 11538 transitions. [2020-12-22 14:23:46,906 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 11538 transitions. Word has length 169 [2020-12-22 14:23:46,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:46,906 INFO L481 AbstractCegarLoop]: Abstraction has 7906 states and 11538 transitions. [2020-12-22 14:23:46,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:23:46,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 11538 transitions. [2020-12-22 14:23:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 14:23:46,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:46,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:46,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 14:23:46,920 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:46,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:46,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2039693538, now seen corresponding path program 1 times [2020-12-22 14:23:46,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:46,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264683868] [2020-12-22 14:23:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:23:47,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264683868] [2020-12-22 14:23:47,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:23:47,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:23:47,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841509772] [2020-12-22 14:23:47,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:23:47,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:47,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:23:47,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:23:47,378 INFO L87 Difference]: Start difference. First operand 7906 states and 11538 transitions. Second operand 4 states. [2020-12-22 14:23:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:48,832 INFO L93 Difference]: Finished difference Result 30913 states and 45090 transitions. [2020-12-22 14:23:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:23:48,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-12-22 14:23:48,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:48,887 INFO L225 Difference]: With dead ends: 30913 [2020-12-22 14:23:48,887 INFO L226 Difference]: Without dead ends: 23064 [2020-12-22 14:23:48,909 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 14:23:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23064 states. [2020-12-22 14:23:49,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23064 to 7914. [2020-12-22 14:23:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7914 states. [2020-12-22 14:23:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7914 states to 7914 states and 11546 transitions. [2020-12-22 14:23:49,488 INFO L78 Accepts]: Start accepts. Automaton has 7914 states and 11546 transitions. Word has length 170 [2020-12-22 14:23:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:49,488 INFO L481 AbstractCegarLoop]: Abstraction has 7914 states and 11546 transitions. [2020-12-22 14:23:49,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:23:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 7914 states and 11546 transitions. [2020-12-22 14:23:49,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 14:23:49,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:49,499 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:49,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 14:23:49,500 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:49,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:49,500 INFO L82 PathProgramCache]: Analyzing trace with hash 820029928, now seen corresponding path program 1 times [2020-12-22 14:23:49,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:49,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593650399] [2020-12-22 14:23:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:23:49,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593650399] [2020-12-22 14:23:49,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533239307] [2020-12-22 14:23:49,959 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 14:23:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:51,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 3527 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 14:23:51,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:23:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:23:52,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:23:52,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-12-22 14:23:52,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718291349] [2020-12-22 14:23:52,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:23:52,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:52,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:23:52,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 14:23:52,134 INFO L87 Difference]: Start difference. First operand 7914 states and 11546 transitions. Second operand 4 states. [2020-12-22 14:23:53,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:23:53,256 INFO L93 Difference]: Finished difference Result 23632 states and 34518 transitions. [2020-12-22 14:23:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:23:53,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 14:23:53,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:23:53,295 INFO L225 Difference]: With dead ends: 23632 [2020-12-22 14:23:53,295 INFO L226 Difference]: Without dead ends: 15775 [2020-12-22 14:23:53,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:23:53,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2020-12-22 14:23:53,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 8202. [2020-12-22 14:23:53,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8202 states. [2020-12-22 14:23:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 11934 transitions. [2020-12-22 14:23:53,939 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 11934 transitions. Word has length 171 [2020-12-22 14:23:53,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:23:53,939 INFO L481 AbstractCegarLoop]: Abstraction has 8202 states and 11934 transitions. [2020-12-22 14:23:53,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:23:53,940 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 11934 transitions. [2020-12-22 14:23:53,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 14:23:53,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:23:53,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:23:54,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 14:23:54,165 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:23:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:23:54,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1229357914, now seen corresponding path program 1 times [2020-12-22 14:23:54,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:23:54,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826318777] [2020-12-22 14:23:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:23:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:54,794 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:23:54,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826318777] [2020-12-22 14:23:54,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905912656] [2020-12-22 14:23:54,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 14:23:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:23:56,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 14:23:56,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:23:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:23:56,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:23:56,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-12-22 14:23:56,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104067871] [2020-12-22 14:23:56,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:23:56,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:23:56,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:23:56,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:23:56,640 INFO L87 Difference]: Start difference. First operand 8202 states and 11934 transitions. Second operand 4 states. [2020-12-22 14:24:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:24:00,342 INFO L93 Difference]: Finished difference Result 24497 states and 35678 transitions. [2020-12-22 14:24:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:24:00,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 14:24:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:24:00,396 INFO L225 Difference]: With dead ends: 24497 [2020-12-22 14:24:00,396 INFO L226 Difference]: Without dead ends: 24490 [2020-12-22 14:24:00,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 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 14:24:00,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24490 states. [2020-12-22 14:24:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24490 to 24250. [2020-12-22 14:24:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24250 states. [2020-12-22 14:24:01,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24250 states to 24250 states and 35386 transitions. [2020-12-22 14:24:01,649 INFO L78 Accepts]: Start accepts. Automaton has 24250 states and 35386 transitions. Word has length 171 [2020-12-22 14:24:01,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:24:01,649 INFO L481 AbstractCegarLoop]: Abstraction has 24250 states and 35386 transitions. [2020-12-22 14:24:01,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:24:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 24250 states and 35386 transitions. [2020-12-22 14:24:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 14:24:01,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:24:01,682 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:24:01,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 14:24:01,897 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:24:01,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:24:01,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1816163928, now seen corresponding path program 1 times [2020-12-22 14:24:01,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:24:01,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305637008] [2020-12-22 14:24:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:24:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:24:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:24:02,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305637008] [2020-12-22 14:24:02,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:24:02,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:24:02,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925744436] [2020-12-22 14:24:02,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:24:02,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:24:02,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:24:02,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:24:02,297 INFO L87 Difference]: Start difference. First operand 24250 states and 35386 transitions. Second operand 4 states. [2020-12-22 14:24:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:24:05,060 INFO L93 Difference]: Finished difference Result 69103 states and 100865 transitions. [2020-12-22 14:24:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:24:05,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-12-22 14:24:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:24:05,370 INFO L225 Difference]: With dead ends: 69103 [2020-12-22 14:24:05,370 INFO L226 Difference]: Without dead ends: 56975 [2020-12-22 14:24:05,397 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 14:24:05,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56975 states. [2020-12-22 14:24:07,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56975 to 24254. [2020-12-22 14:24:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24254 states. [2020-12-22 14:24:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24254 states to 24254 states and 35390 transitions. [2020-12-22 14:24:07,232 INFO L78 Accepts]: Start accepts. Automaton has 24254 states and 35390 transitions. Word has length 171 [2020-12-22 14:24:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:24:07,233 INFO L481 AbstractCegarLoop]: Abstraction has 24254 states and 35390 transitions. [2020-12-22 14:24:07,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:24:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 24254 states and 35390 transitions. [2020-12-22 14:24:07,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-22 14:24:07,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:24:07,258 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:24:07,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 14:24:07,258 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:24:07,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:24:07,259 INFO L82 PathProgramCache]: Analyzing trace with hash 268260612, now seen corresponding path program 1 times [2020-12-22 14:24:07,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:24:07,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622979923] [2020-12-22 14:24:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:24:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:24:07,906 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:24:07,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622979923] [2020-12-22 14:24:07,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:24:07,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:24:07,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443803722] [2020-12-22 14:24:07,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:24:07,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:24:07,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:24:07,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:24:07,909 INFO L87 Difference]: Start difference. First operand 24254 states and 35390 transitions. Second operand 3 states. [2020-12-22 14:24:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:24:10,188 INFO L93 Difference]: Finished difference Result 72648 states and 106042 transitions. [2020-12-22 14:24:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:24:10,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2020-12-22 14:24:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:24:10,259 INFO L225 Difference]: With dead ends: 72648 [2020-12-22 14:24:10,260 INFO L226 Difference]: Without dead ends: 48451 [2020-12-22 14:24:10,289 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 14:24:10,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48451 states. [2020-12-22 14:24:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48451 to 24266. [2020-12-22 14:24:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24266 states. [2020-12-22 14:24:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24266 states to 24266 states and 35402 transitions. [2020-12-22 14:24:11,854 INFO L78 Accepts]: Start accepts. Automaton has 24266 states and 35402 transitions. Word has length 172 [2020-12-22 14:24:11,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:24:11,855 INFO L481 AbstractCegarLoop]: Abstraction has 24266 states and 35402 transitions. [2020-12-22 14:24:11,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:24:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 24266 states and 35402 transitions. [2020-12-22 14:24:11,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-12-22 14:24:11,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:24:11,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:24:11,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 14:24:11,878 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:24:11,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:24:11,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1290477699, now seen corresponding path program 1 times [2020-12-22 14:24:11,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:24:11,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841919443] [2020-12-22 14:24:11,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:24:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:24:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:24:13,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841919443] [2020-12-22 14:24:13,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:24:13,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 14:24:13,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873258285] [2020-12-22 14:24:13,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 14:24:13,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:24:13,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 14:24:13,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-12-22 14:24:13,220 INFO L87 Difference]: Start difference. First operand 24266 states and 35402 transitions. Second operand 16 states. [2020-12-22 14:25:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:25:13,231 INFO L93 Difference]: Finished difference Result 115419 states and 168539 transitions. [2020-12-22 14:25:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 14:25:13,233 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-12-22 14:25:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:25:13,378 INFO L225 Difference]: With dead ends: 115419 [2020-12-22 14:25:13,378 INFO L226 Difference]: Without dead ends: 103263 [2020-12-22 14:25:13,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=635, Invalid=1527, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 14:25:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103263 states. [2020-12-22 14:25:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103263 to 30614. [2020-12-22 14:25:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30614 states. [2020-12-22 14:25:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30614 states to 30614 states and 44810 transitions. [2020-12-22 14:25:16,261 INFO L78 Accepts]: Start accepts. Automaton has 30614 states and 44810 transitions. Word has length 174 [2020-12-22 14:25:16,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:25:16,262 INFO L481 AbstractCegarLoop]: Abstraction has 30614 states and 44810 transitions. [2020-12-22 14:25:16,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 14:25:16,262 INFO L276 IsEmpty]: Start isEmpty. Operand 30614 states and 44810 transitions. [2020-12-22 14:25:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-12-22 14:25:16,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:25:16,277 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:25:16,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 14:25:16,278 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:25:16,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:25:16,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1081261563, now seen corresponding path program 1 times [2020-12-22 14:25:16,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:25:16,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702587098] [2020-12-22 14:25:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:25:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:25:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:25:17,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702587098] [2020-12-22 14:25:17,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:25:17,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 14:25:17,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936450334] [2020-12-22 14:25:17,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 14:25:17,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:25:17,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 14:25:17,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 14:25:17,389 INFO L87 Difference]: Start difference. First operand 30614 states and 44810 transitions. Second operand 8 states. [2020-12-22 14:25:26,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:25:26,100 INFO L93 Difference]: Finished difference Result 119986 states and 175364 transitions. [2020-12-22 14:25:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 14:25:26,102 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-12-22 14:25:26,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:25:26,215 INFO L225 Difference]: With dead ends: 119986 [2020-12-22 14:25:26,215 INFO L226 Difference]: Without dead ends: 89429 [2020-12-22 14:25:26,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 14:25:26,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89429 states. [2020-12-22 14:25:29,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89429 to 30662. [2020-12-22 14:25:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30662 states. [2020-12-22 14:25:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30662 states to 30662 states and 44858 transitions. [2020-12-22 14:25:29,558 INFO L78 Accepts]: Start accepts. Automaton has 30662 states and 44858 transitions. Word has length 174 [2020-12-22 14:25:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:25:29,559 INFO L481 AbstractCegarLoop]: Abstraction has 30662 states and 44858 transitions. [2020-12-22 14:25:29,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 14:25:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 30662 states and 44858 transitions. [2020-12-22 14:25:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-12-22 14:25:29,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:25:29,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:29,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 14:25:29,584 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:25:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:25:29,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1489016868, now seen corresponding path program 1 times [2020-12-22 14:25:29,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:25:29,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604115358] [2020-12-22 14:25:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:25:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:25:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:25:30,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604115358] [2020-12-22 14:25:30,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:25:30,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 14:25:30,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650081380] [2020-12-22 14:25:30,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 14:25:30,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:25:30,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 14:25:30,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 14:25:30,793 INFO L87 Difference]: Start difference. First operand 30662 states and 44858 transitions. Second operand 8 states. [2020-12-22 14:25:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:25:40,540 INFO L93 Difference]: Finished difference Result 113734 states and 166052 transitions. [2020-12-22 14:25:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 14:25:40,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 180 [2020-12-22 14:25:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:25:40,638 INFO L225 Difference]: With dead ends: 113734 [2020-12-22 14:25:40,639 INFO L226 Difference]: Without dead ends: 83129 [2020-12-22 14:25:40,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 14:25:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83129 states. [2020-12-22 14:25:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83129 to 24314. [2020-12-22 14:25:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24314 states. [2020-12-22 14:25:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24314 states to 24314 states and 35450 transitions. [2020-12-22 14:25:43,951 INFO L78 Accepts]: Start accepts. Automaton has 24314 states and 35450 transitions. Word has length 180 [2020-12-22 14:25:43,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:25:43,951 INFO L481 AbstractCegarLoop]: Abstraction has 24314 states and 35450 transitions. [2020-12-22 14:25:43,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 14:25:43,952 INFO L276 IsEmpty]: Start isEmpty. Operand 24314 states and 35450 transitions. [2020-12-22 14:25:43,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-12-22 14:25:43,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:25:43,968 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:43,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 14:25:43,968 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:25:43,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:25:43,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1562730988, now seen corresponding path program 1 times [2020-12-22 14:25:43,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:25:43,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565129955] [2020-12-22 14:25:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:25:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:25:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:25:44,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565129955] [2020-12-22 14:25:44,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:25:44,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 14:25:44,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896623736] [2020-12-22 14:25:44,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 14:25:44,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:25:44,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 14:25:44,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:25:44,676 INFO L87 Difference]: Start difference. First operand 24314 states and 35450 transitions. Second operand 7 states. [2020-12-22 14:25:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:25:56,068 INFO L93 Difference]: Finished difference Result 105742 states and 154232 transitions. [2020-12-22 14:25:56,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 14:25:56,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-12-22 14:25:56,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:25:56,165 INFO L225 Difference]: With dead ends: 105742 [2020-12-22 14:25:56,166 INFO L226 Difference]: Without dead ends: 81485 [2020-12-22 14:25:56,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 14:25:56,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81485 states. [2020-12-22 14:25:59,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81485 to 24374. [2020-12-22 14:25:59,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24374 states. [2020-12-22 14:25:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24374 states to 24374 states and 35510 transitions. [2020-12-22 14:25:59,762 INFO L78 Accepts]: Start accepts. Automaton has 24374 states and 35510 transitions. Word has length 180 [2020-12-22 14:25:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:25:59,763 INFO L481 AbstractCegarLoop]: Abstraction has 24374 states and 35510 transitions. [2020-12-22 14:25:59,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 14:25:59,763 INFO L276 IsEmpty]: Start isEmpty. Operand 24374 states and 35510 transitions. [2020-12-22 14:25:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-22 14:25:59,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:25:59,778 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:59,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 14:25:59,778 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:25:59,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:25:59,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1597851652, now seen corresponding path program 1 times [2020-12-22 14:25:59,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:25:59,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311519866] [2020-12-22 14:25:59,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:26:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:26:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:26:00,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311519866] [2020-12-22 14:26:00,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:26:00,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 14:26:00,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88820220] [2020-12-22 14:26:00,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 14:26:00,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:26:00,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 14:26:00,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:26:00,600 INFO L87 Difference]: Start difference. First operand 24374 states and 35510 transitions. Second operand 7 states. [2020-12-22 14:26:36,433 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27