/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:24:41,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:24:41,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:24:41,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:24:41,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:24:41,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:24:41,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:24:41,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:24:41,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:24:41,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:24:41,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:24:41,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:24:41,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:24:41,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:24:41,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:24:41,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:24:41,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:24:41,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:24:41,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:24:41,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:24:41,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:24:41,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:24:41,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:24:41,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:24:41,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:24:41,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:24:41,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:24:41,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:24:41,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:24:41,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:24:41,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:24:41,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:24:41,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:24:41,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:24:41,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:24:41,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:24:41,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:24:41,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:24:41,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:24:41,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:24:41,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:24:41,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:24:41,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:24:41,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:24:41,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:24:41,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:24:41,150 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:24:41,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:24:41,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:24:41,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:24:41,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:24:41,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:24:41,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:24:41,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:24:41,153 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:24:41,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:24:41,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:24:41,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:24:41,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:24:41,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:24:41,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:24:41,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:24:41,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:24:41,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:24:41,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:24:41,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:24:41,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:24:41,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:24:41,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:24:41,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:24:41,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:24:41,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:24:41,685 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:24:41,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:24:41,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73d8e2c6e/1acb515cb8c34b98a7ca1484694fc567/FLAG9066b4995 [2020-12-22 08:24:42,843 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:24:42,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:24:42,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73d8e2c6e/1acb515cb8c34b98a7ca1484694fc567/FLAG9066b4995 [2020-12-22 08:24:43,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73d8e2c6e/1acb515cb8c34b98a7ca1484694fc567 [2020-12-22 08:24:43,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:24:43,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:24:43,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:24:43,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:24:43,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:24:43,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:24:43" (1/1) ... [2020-12-22 08:24:43,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d97c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:43, skipping insertion in model container [2020-12-22 08:24:43,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:24:43" (1/1) ... [2020-12-22 08:24:43,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:24:43,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:24:44,251 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[28529,28542] [2020-12-22 08:24:44,409 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[50565,50578] [2020-12-22 08:24:44,453 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[58291,58304] [2020-12-22 08:24:44,538 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[83398,83411] [2020-12-22 08:24:44,678 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[98571,98584] [2020-12-22 08:24:44,754 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[115282,115295] [2020-12-22 08:24:44,813 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131649,131662] [2020-12-22 08:24:45,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:24:45,082 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:24:45,192 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[28529,28542] [2020-12-22 08:24:45,238 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[50565,50578] [2020-12-22 08:24:45,258 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[58291,58304] [2020-12-22 08:24:45,321 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[83398,83411] [2020-12-22 08:24:45,370 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[98571,98584] [2020-12-22 08:24:45,416 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[115282,115295] [2020-12-22 08:24:45,457 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[131649,131662] [2020-12-22 08:24:45,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:24:45,699 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:24:45,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45 WrapperNode [2020-12-22 08:24:45,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:24:45,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:24:45,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:24:45,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:24:45,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45" (1/1) ... [2020-12-22 08:24:45,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45" (1/1) ... [2020-12-22 08:24:45,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:24:45,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:24:45,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:24:45,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:24:45,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45" (1/1) ... [2020-12-22 08:24:45,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45" (1/1) ... [2020-12-22 08:24:45,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45" (1/1) ... [2020-12-22 08:24:45,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45" (1/1) ... [2020-12-22 08:24:46,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45" (1/1) ... [2020-12-22 08:24:46,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45" (1/1) ... [2020-12-22 08:24:46,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45" (1/1) ... [2020-12-22 08:24:46,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:24:46,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:24:46,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:24:46,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:24:46,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:24:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:24:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:24:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:24:46,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:24:51,670 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:24:51,671 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:24:51,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:24:51 BoogieIcfgContainer [2020-12-22 08:24:51,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:24:51,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:24:51,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:24:51,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:24:51,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:24:43" (1/3) ... [2020-12-22 08:24:51,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a268cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:24:51, skipping insertion in model container [2020-12-22 08:24:51,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:24:45" (2/3) ... [2020-12-22 08:24:51,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a268cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:24:51, skipping insertion in model container [2020-12-22 08:24:51,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:24:51" (3/3) ... [2020-12-22 08:24:51,685 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:24:51,691 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:24:51,699 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 08:24:51,719 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 08:24:51,760 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:24:51,760 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:24:51,760 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:24:51,760 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:24:51,761 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:24:51,761 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:24:51,761 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:24:51,761 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:24:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states. [2020-12-22 08:24:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:24:51,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:51,839 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] [2020-12-22 08:24:51,839 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:51,846 INFO L82 PathProgramCache]: Analyzing trace with hash -847729376, now seen corresponding path program 1 times [2020-12-22 08:24:51,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:51,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365899249] [2020-12-22 08:24:51,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:24:52,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365899249] [2020-12-22 08:24:52,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:52,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:24:52,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177534636] [2020-12-22 08:24:52,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:24:52,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:52,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:24:52,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:24:52,496 INFO L87 Difference]: Start difference. First operand 2029 states. Second operand 5 states. [2020-12-22 08:24:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:56,116 INFO L93 Difference]: Finished difference Result 3990 states and 7067 transitions. [2020-12-22 08:24:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:24:56,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 08:24:56,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:56,183 INFO L225 Difference]: With dead ends: 3990 [2020-12-22 08:24:56,183 INFO L226 Difference]: Without dead ends: 2653 [2020-12-22 08:24:56,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:24:56,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2020-12-22 08:24:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2647. [2020-12-22 08:24:56,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2647 states. [2020-12-22 08:24:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 3517 transitions. [2020-12-22 08:24:56,452 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 3517 transitions. Word has length 64 [2020-12-22 08:24:56,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:56,453 INFO L481 AbstractCegarLoop]: Abstraction has 2647 states and 3517 transitions. [2020-12-22 08:24:56,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:24:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 3517 transitions. [2020-12-22 08:24:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:24:56,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:56,469 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] [2020-12-22 08:24:56,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:24:56,470 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:56,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:56,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1467352586, now seen corresponding path program 1 times [2020-12-22 08:24:56,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:56,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003754315] [2020-12-22 08:24:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:24:56,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003754315] [2020-12-22 08:24:56,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:56,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:24:56,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136101563] [2020-12-22 08:24:56,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:24:56,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:56,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:24:56,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:24:56,820 INFO L87 Difference]: Start difference. First operand 2647 states and 3517 transitions. Second operand 6 states. [2020-12-22 08:24:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:59,480 INFO L93 Difference]: Finished difference Result 4935 states and 6674 transitions. [2020-12-22 08:24:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:24:59,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 08:24:59,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:59,504 INFO L225 Difference]: With dead ends: 4935 [2020-12-22 08:24:59,505 INFO L226 Difference]: Without dead ends: 3330 [2020-12-22 08:24:59,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:24:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2020-12-22 08:24:59,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3313. [2020-12-22 08:24:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3313 states. [2020-12-22 08:24:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 4517 transitions. [2020-12-22 08:24:59,702 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 4517 transitions. Word has length 65 [2020-12-22 08:24:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:59,703 INFO L481 AbstractCegarLoop]: Abstraction has 3313 states and 4517 transitions. [2020-12-22 08:24:59,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:24:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 4517 transitions. [2020-12-22 08:24:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:24:59,711 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:59,711 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] [2020-12-22 08:24:59,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:24:59,712 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:59,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:59,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1695427145, now seen corresponding path program 1 times [2020-12-22 08:24:59,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:59,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219479541] [2020-12-22 08:24:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:24:59,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219479541] [2020-12-22 08:24:59,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:59,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:24:59,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150548896] [2020-12-22 08:24:59,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:24:59,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:59,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:24:59,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:24:59,869 INFO L87 Difference]: Start difference. First operand 3313 states and 4517 transitions. Second operand 6 states. [2020-12-22 08:25:02,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:02,614 INFO L93 Difference]: Finished difference Result 8253 states and 11397 transitions. [2020-12-22 08:25:02,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:25:02,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 08:25:02,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:02,659 INFO L225 Difference]: With dead ends: 8253 [2020-12-22 08:25:02,660 INFO L226 Difference]: Without dead ends: 5808 [2020-12-22 08:25:02,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:25:02,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5808 states. [2020-12-22 08:25:02,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5808 to 5784. [2020-12-22 08:25:02,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5784 states. [2020-12-22 08:25:02,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 7918 transitions. [2020-12-22 08:25:02,992 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 7918 transitions. Word has length 65 [2020-12-22 08:25:02,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:02,994 INFO L481 AbstractCegarLoop]: Abstraction has 5784 states and 7918 transitions. [2020-12-22 08:25:02,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:25:02,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 7918 transitions. [2020-12-22 08:25:03,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:25:03,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:03,005 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 08:25:03,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:25:03,006 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:03,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:03,007 INFO L82 PathProgramCache]: Analyzing trace with hash -113126011, now seen corresponding path program 1 times [2020-12-22 08:25:03,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:03,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226307754] [2020-12-22 08:25:03,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:03,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226307754] [2020-12-22 08:25:03,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:03,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:25:03,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084596894] [2020-12-22 08:25:03,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:25:03,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:03,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:25:03,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:25:03,450 INFO L87 Difference]: Start difference. First operand 5784 states and 7918 transitions. Second operand 9 states. [2020-12-22 08:25:08,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:08,276 INFO L93 Difference]: Finished difference Result 7550 states and 10647 transitions. [2020-12-22 08:25:08,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:25:08,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-12-22 08:25:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:08,318 INFO L225 Difference]: With dead ends: 7550 [2020-12-22 08:25:08,318 INFO L226 Difference]: Without dead ends: 7545 [2020-12-22 08:25:08,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:25:08,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7545 states. [2020-12-22 08:25:08,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7545 to 5784. [2020-12-22 08:25:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5784 states. [2020-12-22 08:25:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 7917 transitions. [2020-12-22 08:25:08,750 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 7917 transitions. Word has length 66 [2020-12-22 08:25:08,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:08,753 INFO L481 AbstractCegarLoop]: Abstraction has 5784 states and 7917 transitions. [2020-12-22 08:25:08,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:25:08,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 7917 transitions. [2020-12-22 08:25:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:25:08,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:08,762 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 08:25:08,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:25:08,763 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:08,765 INFO L82 PathProgramCache]: Analyzing trace with hash 333187054, now seen corresponding path program 1 times [2020-12-22 08:25:08,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:08,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21921537] [2020-12-22 08:25:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:09,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21921537] [2020-12-22 08:25:09,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:09,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:25:09,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115274522] [2020-12-22 08:25:09,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:25:09,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:09,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:25:09,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:25:09,152 INFO L87 Difference]: Start difference. First operand 5784 states and 7917 transitions. Second operand 10 states. [2020-12-22 08:25:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:17,564 INFO L93 Difference]: Finished difference Result 15786 states and 23402 transitions. [2020-12-22 08:25:17,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 08:25:17,565 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-12-22 08:25:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:17,634 INFO L225 Difference]: With dead ends: 15786 [2020-12-22 08:25:17,635 INFO L226 Difference]: Without dead ends: 14119 [2020-12-22 08:25:17,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=374, Invalid=1108, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:25:17,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14119 states. [2020-12-22 08:25:18,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14119 to 5791. [2020-12-22 08:25:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5791 states. [2020-12-22 08:25:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5791 states to 5791 states and 7924 transitions. [2020-12-22 08:25:18,151 INFO L78 Accepts]: Start accepts. Automaton has 5791 states and 7924 transitions. Word has length 66 [2020-12-22 08:25:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:18,152 INFO L481 AbstractCegarLoop]: Abstraction has 5791 states and 7924 transitions. [2020-12-22 08:25:18,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:25:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5791 states and 7924 transitions. [2020-12-22 08:25:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:25:18,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:18,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:18,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:25:18,165 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:18,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:18,166 INFO L82 PathProgramCache]: Analyzing trace with hash 124822112, now seen corresponding path program 1 times [2020-12-22 08:25:18,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:18,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599870351] [2020-12-22 08:25:18,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:18,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599870351] [2020-12-22 08:25:18,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:18,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:25:18,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362817285] [2020-12-22 08:25:18,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:25:18,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:18,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:25:18,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:25:18,649 INFO L87 Difference]: Start difference. First operand 5791 states and 7924 transitions. Second operand 12 states. [2020-12-22 08:25:19,025 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-22 08:25:19,180 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:25:19,385 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:25:19,848 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:25:20,372 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:25:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:24,266 INFO L93 Difference]: Finished difference Result 14603 states and 21390 transitions. [2020-12-22 08:25:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:25:24,266 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-12-22 08:25:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:24,301 INFO L225 Difference]: With dead ends: 14603 [2020-12-22 08:25:24,301 INFO L226 Difference]: Without dead ends: 13158 [2020-12-22 08:25:24,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:25:24,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13158 states. [2020-12-22 08:25:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13158 to 5692. [2020-12-22 08:25:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5692 states. [2020-12-22 08:25:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5692 states to 5692 states and 7787 transitions. [2020-12-22 08:25:25,042 INFO L78 Accepts]: Start accepts. Automaton has 5692 states and 7787 transitions. Word has length 67 [2020-12-22 08:25:25,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:25,044 INFO L481 AbstractCegarLoop]: Abstraction has 5692 states and 7787 transitions. [2020-12-22 08:25:25,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:25:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 5692 states and 7787 transitions. [2020-12-22 08:25:25,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:25:25,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:25,054 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] [2020-12-22 08:25:25,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:25:25,055 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:25,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:25,055 INFO L82 PathProgramCache]: Analyzing trace with hash 400365220, now seen corresponding path program 1 times [2020-12-22 08:25:25,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:25,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293487684] [2020-12-22 08:25:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:25,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293487684] [2020-12-22 08:25:25,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:25,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:25:25,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721349411] [2020-12-22 08:25:25,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:25:25,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:25,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:25:25,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:25:25,212 INFO L87 Difference]: Start difference. First operand 5692 states and 7787 transitions. Second operand 6 states. [2020-12-22 08:25:28,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:28,219 INFO L93 Difference]: Finished difference Result 13836 states and 19183 transitions. [2020-12-22 08:25:28,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:25:28,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 08:25:28,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:28,243 INFO L225 Difference]: With dead ends: 13836 [2020-12-22 08:25:28,243 INFO L226 Difference]: Without dead ends: 10135 [2020-12-22 08:25:28,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:25:28,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10135 states. [2020-12-22 08:25:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10135 to 10123. [2020-12-22 08:25:29,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10123 states. [2020-12-22 08:25:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10123 states to 10123 states and 13974 transitions. [2020-12-22 08:25:29,365 INFO L78 Accepts]: Start accepts. Automaton has 10123 states and 13974 transitions. Word has length 67 [2020-12-22 08:25:29,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:29,366 INFO L481 AbstractCegarLoop]: Abstraction has 10123 states and 13974 transitions. [2020-12-22 08:25:29,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:25:29,366 INFO L276 IsEmpty]: Start isEmpty. Operand 10123 states and 13974 transitions. [2020-12-22 08:25:29,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:25:29,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:29,379 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] [2020-12-22 08:25:29,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:25:29,380 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:29,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:29,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1973300712, now seen corresponding path program 1 times [2020-12-22 08:25:29,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:29,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811062518] [2020-12-22 08:25:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:29,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811062518] [2020-12-22 08:25:29,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:29,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:25:29,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740348027] [2020-12-22 08:25:29,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:25:29,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:29,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:25:29,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:25:29,851 INFO L87 Difference]: Start difference. First operand 10123 states and 13974 transitions. Second operand 12 states. [2020-12-22 08:25:30,478 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-22 08:25:30,790 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-22 08:25:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:37,209 INFO L93 Difference]: Finished difference Result 29256 states and 43505 transitions. [2020-12-22 08:25:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:25:37,209 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-12-22 08:25:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:37,269 INFO L225 Difference]: With dead ends: 29256 [2020-12-22 08:25:37,270 INFO L226 Difference]: Without dead ends: 29252 [2020-12-22 08:25:37,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:25:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29252 states. [2020-12-22 08:25:38,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29252 to 10119. [2020-12-22 08:25:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10119 states. [2020-12-22 08:25:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10119 states to 10119 states and 13969 transitions. [2020-12-22 08:25:38,674 INFO L78 Accepts]: Start accepts. Automaton has 10119 states and 13969 transitions. Word has length 67 [2020-12-22 08:25:38,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:38,675 INFO L481 AbstractCegarLoop]: Abstraction has 10119 states and 13969 transitions. [2020-12-22 08:25:38,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:25:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 10119 states and 13969 transitions. [2020-12-22 08:25:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:25:38,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:38,685 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] [2020-12-22 08:25:38,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:25:38,685 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:38,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:38,686 INFO L82 PathProgramCache]: Analyzing trace with hash -495050815, now seen corresponding path program 1 times [2020-12-22 08:25:38,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:38,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876892621] [2020-12-22 08:25:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:38,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876892621] [2020-12-22 08:25:38,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:38,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:25:38,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757301241] [2020-12-22 08:25:38,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:25:38,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:38,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:25:38,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:25:38,903 INFO L87 Difference]: Start difference. First operand 10119 states and 13969 transitions. Second operand 10 states. [2020-12-22 08:25:51,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:51,224 INFO L93 Difference]: Finished difference Result 34932 states and 51578 transitions. [2020-12-22 08:25:51,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:25:51,225 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-12-22 08:25:51,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:51,285 INFO L225 Difference]: With dead ends: 34932 [2020-12-22 08:25:51,285 INFO L226 Difference]: Without dead ends: 31079 [2020-12-22 08:25:51,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:25:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31079 states. [2020-12-22 08:25:52,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31079 to 10052. [2020-12-22 08:25:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10052 states. [2020-12-22 08:25:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10052 states to 10052 states and 13873 transitions. [2020-12-22 08:25:52,985 INFO L78 Accepts]: Start accepts. Automaton has 10052 states and 13873 transitions. Word has length 68 [2020-12-22 08:25:52,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:52,986 INFO L481 AbstractCegarLoop]: Abstraction has 10052 states and 13873 transitions. [2020-12-22 08:25:52,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:25:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 10052 states and 13873 transitions. [2020-12-22 08:25:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:25:52,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:52,996 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] [2020-12-22 08:25:52,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:25:52,996 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1711266081, now seen corresponding path program 1 times [2020-12-22 08:25:52,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:52,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23005591] [2020-12-22 08:25:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:53,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23005591] [2020-12-22 08:25:53,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:53,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:25:53,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933521236] [2020-12-22 08:25:53,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:25:53,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:53,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:25:53,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:25:53,192 INFO L87 Difference]: Start difference. First operand 10052 states and 13873 transitions. Second operand 9 states. [2020-12-22 08:26:01,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:26:01,117 INFO L93 Difference]: Finished difference Result 17499 states and 25121 transitions. [2020-12-22 08:26:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:26:01,118 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-12-22 08:26:01,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:26:01,143 INFO L225 Difference]: With dead ends: 17499 [2020-12-22 08:26:01,143 INFO L226 Difference]: Without dead ends: 17491 [2020-12-22 08:26:01,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2020-12-22 08:26:01,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17491 states. [2020-12-22 08:26:02,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17491 to 10052. [2020-12-22 08:26:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10052 states. [2020-12-22 08:26:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10052 states to 10052 states and 13872 transitions. [2020-12-22 08:26:02,430 INFO L78 Accepts]: Start accepts. Automaton has 10052 states and 13872 transitions. Word has length 69 [2020-12-22 08:26:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:26:02,430 INFO L481 AbstractCegarLoop]: Abstraction has 10052 states and 13872 transitions. [2020-12-22 08:26:02,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:26:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 10052 states and 13872 transitions. [2020-12-22 08:26:02,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:26:02,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:26:02,440 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] [2020-12-22 08:26:02,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:26:02,441 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:26:02,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:26:02,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1460371581, now seen corresponding path program 1 times [2020-12-22 08:26:02,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:26:02,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40119194] [2020-12-22 08:26:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:26:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:26:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:26:03,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40119194] [2020-12-22 08:26:03,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:26:03,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:26:03,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258434001] [2020-12-22 08:26:03,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:26:03,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:26:03,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:26:03,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:26:03,791 INFO L87 Difference]: Start difference. First operand 10052 states and 13872 transitions. Second operand 19 states. [2020-12-22 08:26:04,264 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-12-22 08:26:04,435 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-22 08:26:04,682 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-22 08:26:04,988 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-12-22 08:26:05,433 WARN L197 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-12-22 08:26:05,945 WARN L197 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-12-22 08:26:06,548 WARN L197 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-12-22 08:26:07,206 WARN L197 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-12-22 08:26:08,718 WARN L197 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2020-12-22 08:26:09,620 WARN L197 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2020-12-22 08:26:10,416 WARN L197 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-12-22 08:26:10,951 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 08:26:11,644 WARN L197 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-12-22 08:26:12,182 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-22 08:26:12,998 WARN L197 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2020-12-22 08:26:13,865 WARN L197 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-12-22 08:26:15,822 WARN L197 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-12-22 08:26:17,142 WARN L197 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-12-22 08:26:18,072 WARN L197 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-12-22 08:26:19,573 WARN L197 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-12-22 08:26:22,343 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-22 08:26:23,159 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-12-22 08:26:23,459 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-12-22 08:26:23,740 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-22 08:26:24,993 WARN L197 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-12-22 08:26:25,485 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 08:26:26,593 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-12-22 08:26:27,639 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-22 08:26:28,148 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-12-22 08:26:28,795 WARN L197 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-12-22 08:26:29,952 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-22 08:26:30,296 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-12-22 08:26:30,929 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-12-22 08:26:31,393 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-22 08:26:31,946 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:26:34,348 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-22 08:26:36,247 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-22 08:26:36,571 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-12-22 08:26:37,426 WARN L197 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-12-22 08:26:38,444 WARN L197 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-12-22 08:26:39,729 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:26:40,452 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-12-22 08:26:41,353 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-12-22 08:26:42,817 WARN L197 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-12-22 08:26:43,190 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-12-22 08:26:44,150 WARN L197 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 08:26:45,504 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-22 08:26:46,051 WARN L197 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-12-22 08:26:48,515 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 08:26:49,218 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 08:26:50,520 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-12-22 08:26:51,176 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:27:01,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:01,000 INFO L93 Difference]: Finished difference Result 108801 states and 167581 transitions. [2020-12-22 08:27:01,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-12-22 08:27:01,001 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 69 [2020-12-22 08:27:01,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:01,203 INFO L225 Difference]: With dead ends: 108801 [2020-12-22 08:27:01,203 INFO L226 Difference]: Without dead ends: 108797 [2020-12-22 08:27:01,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=1124, Invalid=4426, Unknown=0, NotChecked=0, Total=5550 [2020-12-22 08:27:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108797 states. [2020-12-22 08:27:03,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108797 to 10073. [2020-12-22 08:27:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10073 states. [2020-12-22 08:27:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10073 states to 10073 states and 13900 transitions. [2020-12-22 08:27:03,944 INFO L78 Accepts]: Start accepts. Automaton has 10073 states and 13900 transitions. Word has length 69 [2020-12-22 08:27:03,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:03,945 INFO L481 AbstractCegarLoop]: Abstraction has 10073 states and 13900 transitions. [2020-12-22 08:27:03,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:27:03,945 INFO L276 IsEmpty]: Start isEmpty. Operand 10073 states and 13900 transitions. [2020-12-22 08:27:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:27:03,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:03,955 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 08:27:03,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:27:03,956 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:03,956 INFO L82 PathProgramCache]: Analyzing trace with hash 928751966, now seen corresponding path program 1 times [2020-12-22 08:27:03,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:03,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276124470] [2020-12-22 08:27:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:27:04,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276124470] [2020-12-22 08:27:04,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:04,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:27:04,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584761745] [2020-12-22 08:27:04,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:27:04,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:04,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:27:04,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:27:04,356 INFO L87 Difference]: Start difference. First operand 10073 states and 13900 transitions. Second operand 9 states. [2020-12-22 08:27:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:18,265 INFO L93 Difference]: Finished difference Result 30146 states and 44680 transitions. [2020-12-22 08:27:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:27:18,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-12-22 08:27:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:18,293 INFO L225 Difference]: With dead ends: 30146 [2020-12-22 08:27:18,293 INFO L226 Difference]: Without dead ends: 26341 [2020-12-22 08:27:18,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:27:18,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26341 states. [2020-12-22 08:27:20,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26341 to 10073. [2020-12-22 08:27:20,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10073 states. [2020-12-22 08:27:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10073 states to 10073 states and 13899 transitions. [2020-12-22 08:27:20,395 INFO L78 Accepts]: Start accepts. Automaton has 10073 states and 13899 transitions. Word has length 70 [2020-12-22 08:27:20,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:20,395 INFO L481 AbstractCegarLoop]: Abstraction has 10073 states and 13899 transitions. [2020-12-22 08:27:20,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:27:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 10073 states and 13899 transitions. [2020-12-22 08:27:20,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:27:20,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:20,402 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 08:27:20,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:27:20,402 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:20,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:20,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1006800076, now seen corresponding path program 1 times [2020-12-22 08:27:20,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:20,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508082567] [2020-12-22 08:27:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:21,459 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 08:27:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:27:21,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508082567] [2020-12-22 08:27:21,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:21,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-12-22 08:27:21,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749620349] [2020-12-22 08:27:21,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:27:21,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:21,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:27:21,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:27:21,930 INFO L87 Difference]: Start difference. First operand 10073 states and 13899 transitions. Second operand 20 states. [2020-12-22 08:27:22,309 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 08:27:22,484 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-12-22 08:27:22,639 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-12-22 08:27:22,879 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2020-12-22 08:27:23,220 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2020-12-22 08:27:23,625 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:27:24,222 WARN L197 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-12-22 08:27:24,775 WARN L197 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-12-22 08:27:26,351 WARN L197 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-12-22 08:27:27,301 WARN L197 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2020-12-22 08:27:28,065 WARN L197 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-12-22 08:27:29,115 WARN L197 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-12-22 08:27:30,243 WARN L197 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-12-22 08:27:31,226 WARN L197 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-12-22 08:27:31,955 WARN L197 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-12-22 08:27:33,264 WARN L197 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-22 08:27:43,957 WARN L197 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-12-22 08:27:45,931 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-22 08:27:46,896 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-12-22 08:27:47,883 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-12-22 08:27:48,868 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-12-22 08:27:55,034 WARN L197 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-22 08:27:56,705 WARN L197 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-22 08:28:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:06,883 INFO L93 Difference]: Finished difference Result 60793 states and 92121 transitions. [2020-12-22 08:28:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-22 08:28:06,885 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 70 [2020-12-22 08:28:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:06,950 INFO L225 Difference]: With dead ends: 60793 [2020-12-22 08:28:06,950 INFO L226 Difference]: Without dead ends: 60782 [2020-12-22 08:28:06,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=493, Invalid=1957, Unknown=0, NotChecked=0, Total=2450 [2020-12-22 08:28:07,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60782 states. [2020-12-22 08:28:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60782 to 10088. [2020-12-22 08:28:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10088 states. [2020-12-22 08:28:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10088 states to 10088 states and 13921 transitions. [2020-12-22 08:28:09,450 INFO L78 Accepts]: Start accepts. Automaton has 10088 states and 13921 transitions. Word has length 70 [2020-12-22 08:28:09,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:09,451 INFO L481 AbstractCegarLoop]: Abstraction has 10088 states and 13921 transitions. [2020-12-22 08:28:09,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 08:28:09,451 INFO L276 IsEmpty]: Start isEmpty. Operand 10088 states and 13921 transitions. [2020-12-22 08:28:09,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:28:09,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:09,458 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 08:28:09,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:28:09,458 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:09,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:09,458 INFO L82 PathProgramCache]: Analyzing trace with hash -412310474, now seen corresponding path program 1 times [2020-12-22 08:28:09,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:09,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480173653] [2020-12-22 08:28:09,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:28:09,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480173653] [2020-12-22 08:28:09,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:09,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:28:09,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497537363] [2020-12-22 08:28:09,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:28:09,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:09,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:28:09,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:28:09,537 INFO L87 Difference]: Start difference. First operand 10088 states and 13921 transitions. Second operand 3 states. [2020-12-22 08:28:12,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:12,996 INFO L93 Difference]: Finished difference Result 20756 states and 29318 transitions. [2020-12-22 08:28:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:28:12,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 08:28:12,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:13,010 INFO L225 Difference]: With dead ends: 20756 [2020-12-22 08:28:13,010 INFO L226 Difference]: Without dead ends: 12086 [2020-12-22 08:28:13,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:28:13,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12086 states. [2020-12-22 08:28:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12086 to 12076. [2020-12-22 08:28:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12076 states. [2020-12-22 08:28:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12076 states to 12076 states and 17059 transitions. [2020-12-22 08:28:16,374 INFO L78 Accepts]: Start accepts. Automaton has 12076 states and 17059 transitions. Word has length 70 [2020-12-22 08:28:16,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:16,374 INFO L481 AbstractCegarLoop]: Abstraction has 12076 states and 17059 transitions. [2020-12-22 08:28:16,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:28:16,375 INFO L276 IsEmpty]: Start isEmpty. Operand 12076 states and 17059 transitions. [2020-12-22 08:28:16,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:28:16,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:16,382 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 08:28:16,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:28:16,382 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:16,383 INFO L82 PathProgramCache]: Analyzing trace with hash 2065139775, now seen corresponding path program 1 times [2020-12-22 08:28:16,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:16,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577148929] [2020-12-22 08:28:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:28:16,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577148929] [2020-12-22 08:28:16,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:16,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:28:16,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563291942] [2020-12-22 08:28:16,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:28:16,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:16,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:28:16,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:28:16,440 INFO L87 Difference]: Start difference. First operand 12076 states and 17059 transitions. Second operand 3 states. [2020-12-22 08:28:21,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:21,251 INFO L93 Difference]: Finished difference Result 23013 states and 33819 transitions. [2020-12-22 08:28:21,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:28:21,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 08:28:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:21,270 INFO L225 Difference]: With dead ends: 23013 [2020-12-22 08:28:21,271 INFO L226 Difference]: Without dead ends: 14185 [2020-12-22 08:28:21,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:28:21,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14185 states. [2020-12-22 08:28:25,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14185 to 14181. [2020-12-22 08:28:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14181 states. [2020-12-22 08:28:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14181 states to 14181 states and 20750 transitions. [2020-12-22 08:28:25,790 INFO L78 Accepts]: Start accepts. Automaton has 14181 states and 20750 transitions. Word has length 70 [2020-12-22 08:28:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:25,790 INFO L481 AbstractCegarLoop]: Abstraction has 14181 states and 20750 transitions. [2020-12-22 08:28:25,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:28:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 14181 states and 20750 transitions. [2020-12-22 08:28:25,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:28:25,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:25,797 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 08:28:25,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:28:25,797 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:25,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:25,803 INFO L82 PathProgramCache]: Analyzing trace with hash -366010450, now seen corresponding path program 1 times [2020-12-22 08:28:25,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:25,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12564731] [2020-12-22 08:28:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:28:26,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12564731] [2020-12-22 08:28:26,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:26,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:28:26,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849434228] [2020-12-22 08:28:26,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:28:26,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:26,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:28:26,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:28:26,115 INFO L87 Difference]: Start difference. First operand 14181 states and 20750 transitions. Second operand 10 states.