/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:28:51,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:28:51,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:28:51,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:28:51,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:28:51,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:28:51,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:28:51,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:28:51,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:28:51,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:28:51,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:28:51,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:28:51,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:28:51,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:28:51,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:28:51,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:28:51,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:28:51,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:28:51,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:28:51,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:28:51,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:28:51,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:28:51,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:28:51,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:28:51,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:28:51,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:28:51,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:28:51,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:28:51,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:28:51,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:28:51,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:28:51,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:28:51,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:28:51,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:28:51,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:28:51,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:28:51,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:28:51,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:28:51,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:28:51,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:28:51,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:28:51,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:28:51,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:28:51,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:28:51,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:28:51,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:28:51,633 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:28:51,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:28:51,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:28:51,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:28:51,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:28:51,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:28:51,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:28:51,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:28:51,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:28:51,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:28:51,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:28:51,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:28:51,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:28:51,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:28:51,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:28:51,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:28:51,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:28:51,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:28:51,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:28:51,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:28:51,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:28:51,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:28:52,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:28:52,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:28:52,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:28:52,076 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:28:52,076 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:28:52,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-12-22 08:28:52,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e75c97a4/518c431dea334d1f990df5417213567d/FLAG43fc3203b [2020-12-22 08:28:53,159 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:28:53,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-12-22 08:28:53,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e75c97a4/518c431dea334d1f990df5417213567d/FLAG43fc3203b [2020-12-22 08:28:53,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e75c97a4/518c431dea334d1f990df5417213567d [2020-12-22 08:28:53,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:28:53,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:28:53,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:28:53,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:28:53,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:28:53,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:28:53" (1/1) ... [2020-12-22 08:28:53,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fa0cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:53, skipping insertion in model container [2020-12-22 08:28:53,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:28:53" (1/1) ... [2020-12-22 08:28:53,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:28:53,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:28:54,417 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[13852,13865] [2020-12-22 08:28:54,451 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19697,19710] [2020-12-22 08:28:54,461 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20929,20942] [2020-12-22 08:28:54,477 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23161,23174] [2020-12-22 08:28:54,499 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26570,26583] [2020-12-22 08:28:54,541 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33159,33172] [2020-12-22 08:28:55,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:28:55,420 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:28:55,516 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[13852,13865] [2020-12-22 08:28:55,566 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[19697,19710] [2020-12-22 08:28:55,583 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20929,20942] [2020-12-22 08:28:55,612 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23161,23174] [2020-12-22 08:28:55,647 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26570,26583] [2020-12-22 08:28:55,716 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33159,33172] [2020-12-22 08:28:56,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:28:56,543 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:28:56,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56 WrapperNode [2020-12-22 08:28:56,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:28:56,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:28:56,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:28:56,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:28:56,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56" (1/1) ... [2020-12-22 08:28:56,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56" (1/1) ... [2020-12-22 08:28:56,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:28:56,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:28:56,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:28:56,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:28:56,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56" (1/1) ... [2020-12-22 08:28:56,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56" (1/1) ... [2020-12-22 08:28:56,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56" (1/1) ... [2020-12-22 08:28:56,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56" (1/1) ... [2020-12-22 08:28:57,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56" (1/1) ... [2020-12-22 08:28:57,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56" (1/1) ... [2020-12-22 08:28:57,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56" (1/1) ... [2020-12-22 08:28:57,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:28:57,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:28:57,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:28:57,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:28:57,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56" (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 08:28:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:28:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:28:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:28:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:29:02,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:29:02,790 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:29:02,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:29:02 BoogieIcfgContainer [2020-12-22 08:29:02,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:29:02,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:29:02,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:29:02,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:29:02,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:28:53" (1/3) ... [2020-12-22 08:29:02,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176e931d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:29:02, skipping insertion in model container [2020-12-22 08:29:02,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:56" (2/3) ... [2020-12-22 08:29:02,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176e931d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:29:02, skipping insertion in model container [2020-12-22 08:29:02,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:29:02" (3/3) ... [2020-12-22 08:29:02,804 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-12-22 08:29:02,811 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:29:02,817 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 08:29:02,837 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 08:29:02,873 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:29:02,873 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:29:02,873 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:29:02,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:29:02,873 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:29:02,874 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:29:02,874 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:29:02,874 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:29:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states. [2020-12-22 08:29:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:29:02,957 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:02,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:02,959 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:02,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:02,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1255419244, now seen corresponding path program 1 times [2020-12-22 08:29:02,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:02,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865441937] [2020-12-22 08:29:02,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:03,557 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 08:29:03,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865441937] [2020-12-22 08:29:03,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:03,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:29:03,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026224326] [2020-12-22 08:29:03,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:29:03,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:03,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:29:03,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:03,584 INFO L87 Difference]: Start difference. First operand 1759 states. Second operand 3 states. [2020-12-22 08:29:04,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:04,170 INFO L93 Difference]: Finished difference Result 2534 states and 4443 transitions. [2020-12-22 08:29:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:29:04,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:29:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:04,231 INFO L225 Difference]: With dead ends: 2534 [2020-12-22 08:29:04,231 INFO L226 Difference]: Without dead ends: 2330 [2020-12-22 08:29:04,238 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 08:29:04,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2020-12-22 08:29:04,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2320. [2020-12-22 08:29:04,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2020-12-22 08:29:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3015 transitions. [2020-12-22 08:29:04,442 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3015 transitions. Word has length 76 [2020-12-22 08:29:04,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:04,444 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3015 transitions. [2020-12-22 08:29:04,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:29:04,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3015 transitions. [2020-12-22 08:29:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:29:04,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:04,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:04,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:29:04,457 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:04,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:04,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1568234670, now seen corresponding path program 1 times [2020-12-22 08:29:04,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:04,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001890037] [2020-12-22 08:29:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:04,715 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 08:29:04,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001890037] [2020-12-22 08:29:04,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:04,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:29:04,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378760739] [2020-12-22 08:29:04,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:29:04,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:04,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:29:04,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:04,722 INFO L87 Difference]: Start difference. First operand 2320 states and 3015 transitions. Second operand 3 states. [2020-12-22 08:29:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:04,923 INFO L93 Difference]: Finished difference Result 3253 states and 4380 transitions. [2020-12-22 08:29:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:29:04,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:29:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:04,940 INFO L225 Difference]: With dead ends: 3253 [2020-12-22 08:29:04,940 INFO L226 Difference]: Without dead ends: 2780 [2020-12-22 08:29:04,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:04,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2020-12-22 08:29:05,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2770. [2020-12-22 08:29:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2020-12-22 08:29:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3669 transitions. [2020-12-22 08:29:05,049 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3669 transitions. Word has length 76 [2020-12-22 08:29:05,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:05,049 INFO L481 AbstractCegarLoop]: Abstraction has 2770 states and 3669 transitions. [2020-12-22 08:29:05,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:29:05,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3669 transitions. [2020-12-22 08:29:05,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:29:05,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:05,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:05,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:29:05,059 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:05,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:05,062 INFO L82 PathProgramCache]: Analyzing trace with hash -801382376, now seen corresponding path program 1 times [2020-12-22 08:29:05,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:05,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127492128] [2020-12-22 08:29:05,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:05,300 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 08:29:05,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127492128] [2020-12-22 08:29:05,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:05,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:29:05,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588413779] [2020-12-22 08:29:05,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:29:05,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:05,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:29:05,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:29:05,304 INFO L87 Difference]: Start difference. First operand 2770 states and 3669 transitions. Second operand 6 states. [2020-12-22 08:29:07,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:07,052 INFO L93 Difference]: Finished difference Result 5759 states and 7925 transitions. [2020-12-22 08:29:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:29:07,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 08:29:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:07,074 INFO L225 Difference]: With dead ends: 5759 [2020-12-22 08:29:07,074 INFO L226 Difference]: Without dead ends: 3592 [2020-12-22 08:29:07,079 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 08:29:07,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2020-12-22 08:29:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 3572. [2020-12-22 08:29:07,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3572 states. [2020-12-22 08:29:07,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 4975 transitions. [2020-12-22 08:29:07,256 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 4975 transitions. Word has length 76 [2020-12-22 08:29:07,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:07,256 INFO L481 AbstractCegarLoop]: Abstraction has 3572 states and 4975 transitions. [2020-12-22 08:29:07,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:29:07,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 4975 transitions. [2020-12-22 08:29:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:29:07,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:07,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:07,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:29:07,266 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:07,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:07,266 INFO L82 PathProgramCache]: Analyzing trace with hash -845990985, now seen corresponding path program 1 times [2020-12-22 08:29:07,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:07,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427028258] [2020-12-22 08:29:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:07,436 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 08:29:07,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427028258] [2020-12-22 08:29:07,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:07,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:29:07,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364693113] [2020-12-22 08:29:07,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:29:07,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:07,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:29:07,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:29:07,442 INFO L87 Difference]: Start difference. First operand 3572 states and 4975 transitions. Second operand 5 states. [2020-12-22 08:29:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:08,869 INFO L93 Difference]: Finished difference Result 7043 states and 9986 transitions. [2020-12-22 08:29:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:29:08,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-12-22 08:29:08,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:08,892 INFO L225 Difference]: With dead ends: 7043 [2020-12-22 08:29:08,892 INFO L226 Difference]: Without dead ends: 4130 [2020-12-22 08:29:08,898 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 08:29:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2020-12-22 08:29:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 4114. [2020-12-22 08:29:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4114 states. [2020-12-22 08:29:09,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 5789 transitions. [2020-12-22 08:29:09,152 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 5789 transitions. Word has length 77 [2020-12-22 08:29:09,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:09,153 INFO L481 AbstractCegarLoop]: Abstraction has 4114 states and 5789 transitions. [2020-12-22 08:29:09,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:29:09,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 5789 transitions. [2020-12-22 08:29:09,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:29:09,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:09,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:09,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:29:09,161 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:09,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:09,162 INFO L82 PathProgramCache]: Analyzing trace with hash -2068935462, now seen corresponding path program 1 times [2020-12-22 08:29:09,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:09,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125162317] [2020-12-22 08:29:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:09,354 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 08:29:09,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125162317] [2020-12-22 08:29:09,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:09,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:29:09,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041237384] [2020-12-22 08:29:09,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:29:09,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:09,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:29:09,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:29:09,357 INFO L87 Difference]: Start difference. First operand 4114 states and 5789 transitions. Second operand 6 states. [2020-12-22 08:29:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:10,779 INFO L93 Difference]: Finished difference Result 12031 states and 17271 transitions. [2020-12-22 08:29:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:29:10,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 08:29:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:10,823 INFO L225 Difference]: With dead ends: 12031 [2020-12-22 08:29:10,824 INFO L226 Difference]: Without dead ends: 8280 [2020-12-22 08:29:10,832 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 08:29:10,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2020-12-22 08:29:11,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8260. [2020-12-22 08:29:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8260 states. [2020-12-22 08:29:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8260 states to 8260 states and 11869 transitions. [2020-12-22 08:29:11,219 INFO L78 Accepts]: Start accepts. Automaton has 8260 states and 11869 transitions. Word has length 77 [2020-12-22 08:29:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:11,220 INFO L481 AbstractCegarLoop]: Abstraction has 8260 states and 11869 transitions. [2020-12-22 08:29:11,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:29:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 8260 states and 11869 transitions. [2020-12-22 08:29:11,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:29:11,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:11,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:11,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:29:11,229 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:11,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1925332193, now seen corresponding path program 1 times [2020-12-22 08:29:11,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:11,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686055788] [2020-12-22 08:29:11,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:11,313 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 08:29:11,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686055788] [2020-12-22 08:29:11,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:11,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:29:11,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332769383] [2020-12-22 08:29:11,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:29:11,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:11,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:29:11,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:11,316 INFO L87 Difference]: Start difference. First operand 8260 states and 11869 transitions. Second operand 3 states. [2020-12-22 08:29:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:11,879 INFO L93 Difference]: Finished difference Result 18639 states and 27042 transitions. [2020-12-22 08:29:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:29:11,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 08:29:11,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:11,927 INFO L225 Difference]: With dead ends: 18639 [2020-12-22 08:29:11,927 INFO L226 Difference]: Without dead ends: 12007 [2020-12-22 08:29:11,939 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 08:29:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12007 states. [2020-12-22 08:29:12,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12007 to 11961. [2020-12-22 08:29:12,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11961 states. [2020-12-22 08:29:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11961 states to 11961 states and 17137 transitions. [2020-12-22 08:29:12,470 INFO L78 Accepts]: Start accepts. Automaton has 11961 states and 17137 transitions. Word has length 78 [2020-12-22 08:29:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:12,470 INFO L481 AbstractCegarLoop]: Abstraction has 11961 states and 17137 transitions. [2020-12-22 08:29:12,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:29:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 11961 states and 17137 transitions. [2020-12-22 08:29:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:29:12,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:12,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:12,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:29:12,483 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:12,484 INFO L82 PathProgramCache]: Analyzing trace with hash -525215666, now seen corresponding path program 1 times [2020-12-22 08:29:12,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:12,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863314249] [2020-12-22 08:29:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:12,564 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 08:29:12,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863314249] [2020-12-22 08:29:12,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:12,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:29:12,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604911835] [2020-12-22 08:29:12,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:29:12,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:12,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:29:12,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:12,566 INFO L87 Difference]: Start difference. First operand 11961 states and 17137 transitions. Second operand 3 states. [2020-12-22 08:29:13,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:13,342 INFO L93 Difference]: Finished difference Result 27275 states and 39408 transitions. [2020-12-22 08:29:13,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:29:13,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 08:29:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:13,383 INFO L225 Difference]: With dead ends: 27275 [2020-12-22 08:29:13,383 INFO L226 Difference]: Without dead ends: 17413 [2020-12-22 08:29:13,400 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 08:29:13,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17413 states. [2020-12-22 08:29:14,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17413 to 17343. [2020-12-22 08:29:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17343 states. [2020-12-22 08:29:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17343 states to 17343 states and 24745 transitions. [2020-12-22 08:29:14,259 INFO L78 Accepts]: Start accepts. Automaton has 17343 states and 24745 transitions. Word has length 78 [2020-12-22 08:29:14,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:14,260 INFO L481 AbstractCegarLoop]: Abstraction has 17343 states and 24745 transitions. [2020-12-22 08:29:14,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:29:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 17343 states and 24745 transitions. [2020-12-22 08:29:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:29:14,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:14,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:14,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:29:14,276 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:14,277 INFO L82 PathProgramCache]: Analyzing trace with hash -643699700, now seen corresponding path program 1 times [2020-12-22 08:29:14,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:14,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591169126] [2020-12-22 08:29:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:14,365 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 08:29:14,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591169126] [2020-12-22 08:29:14,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:14,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:29:14,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35486159] [2020-12-22 08:29:14,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:29:14,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:14,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:29:14,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:14,368 INFO L87 Difference]: Start difference. First operand 17343 states and 24745 transitions. Second operand 3 states. [2020-12-22 08:29:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:15,379 INFO L93 Difference]: Finished difference Result 45801 states and 65823 transitions. [2020-12-22 08:29:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:29:15,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 08:29:15,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:15,453 INFO L225 Difference]: With dead ends: 45801 [2020-12-22 08:29:15,453 INFO L226 Difference]: Without dead ends: 29883 [2020-12-22 08:29:15,482 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 08:29:15,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29883 states. [2020-12-22 08:29:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29883 to 29873. [2020-12-22 08:29:16,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29873 states. [2020-12-22 08:29:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29873 states to 29873 states and 42484 transitions. [2020-12-22 08:29:16,869 INFO L78 Accepts]: Start accepts. Automaton has 29873 states and 42484 transitions. Word has length 78 [2020-12-22 08:29:16,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:16,869 INFO L481 AbstractCegarLoop]: Abstraction has 29873 states and 42484 transitions. [2020-12-22 08:29:16,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:29:16,869 INFO L276 IsEmpty]: Start isEmpty. Operand 29873 states and 42484 transitions. [2020-12-22 08:29:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:29:16,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:16,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:16,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:29:16,888 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:16,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:16,888 INFO L82 PathProgramCache]: Analyzing trace with hash -453781336, now seen corresponding path program 1 times [2020-12-22 08:29:16,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:16,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496268611] [2020-12-22 08:29:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:17,191 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 08:29:17,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496268611] [2020-12-22 08:29:17,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:17,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:29:17,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840695938] [2020-12-22 08:29:17,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:29:17,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:17,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:29:17,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:29:17,193 INFO L87 Difference]: Start difference. First operand 29873 states and 42484 transitions. Second operand 7 states. [2020-12-22 08:29:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:24,607 INFO L93 Difference]: Finished difference Result 125235 states and 180098 transitions. [2020-12-22 08:29:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:29:24,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-12-22 08:29:24,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:24,835 INFO L225 Difference]: With dead ends: 125235 [2020-12-22 08:29:24,835 INFO L226 Difference]: Without dead ends: 114546 [2020-12-22 08:29:24,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:29:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114546 states. [2020-12-22 08:29:27,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114546 to 29921. [2020-12-22 08:29:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29921 states. [2020-12-22 08:29:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29921 states to 29921 states and 42548 transitions. [2020-12-22 08:29:27,950 INFO L78 Accepts]: Start accepts. Automaton has 29921 states and 42548 transitions. Word has length 79 [2020-12-22 08:29:27,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:27,950 INFO L481 AbstractCegarLoop]: Abstraction has 29921 states and 42548 transitions. [2020-12-22 08:29:27,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:29:27,950 INFO L276 IsEmpty]: Start isEmpty. Operand 29921 states and 42548 transitions. [2020-12-22 08:29:27,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:29:27,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:27,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:27,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:29:27,966 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:27,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:27,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1721136855, now seen corresponding path program 1 times [2020-12-22 08:29:27,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:27,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509637801] [2020-12-22 08:29:27,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:28,098 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 08:29:28,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509637801] [2020-12-22 08:29:28,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:28,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:29:28,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281836495] [2020-12-22 08:29:28,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:29:28,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:28,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:29:28,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:29:28,101 INFO L87 Difference]: Start difference. First operand 29921 states and 42548 transitions. Second operand 7 states. [2020-12-22 08:29:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:38,351 INFO L93 Difference]: Finished difference Result 135127 states and 193997 transitions. [2020-12-22 08:29:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:29:38,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-12-22 08:29:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:38,679 INFO L225 Difference]: With dead ends: 135127 [2020-12-22 08:29:38,679 INFO L226 Difference]: Without dead ends: 122449 [2020-12-22 08:29:38,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:29:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122449 states. [2020-12-22 08:29:41,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122449 to 30101. [2020-12-22 08:29:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30101 states. [2020-12-22 08:29:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30101 states to 30101 states and 42788 transitions. [2020-12-22 08:29:42,007 INFO L78 Accepts]: Start accepts. Automaton has 30101 states and 42788 transitions. Word has length 79 [2020-12-22 08:29:42,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:42,007 INFO L481 AbstractCegarLoop]: Abstraction has 30101 states and 42788 transitions. [2020-12-22 08:29:42,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:29:42,007 INFO L276 IsEmpty]: Start isEmpty. Operand 30101 states and 42788 transitions. [2020-12-22 08:29:42,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:29:42,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:42,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:42,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:29:42,020 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:42,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:42,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1949723738, now seen corresponding path program 1 times [2020-12-22 08:29:42,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:42,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114115428] [2020-12-22 08:29:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:42,141 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 08:29:42,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114115428] [2020-12-22 08:29:42,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:42,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:29:42,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354890644] [2020-12-22 08:29:42,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:29:42,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:42,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:29:42,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:29:42,144 INFO L87 Difference]: Start difference. First operand 30101 states and 42788 transitions. Second operand 7 states. [2020-12-22 08:29:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:53,397 INFO L93 Difference]: Finished difference Result 123927 states and 177651 transitions. [2020-12-22 08:29:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:29:53,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-12-22 08:29:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:53,561 INFO L225 Difference]: With dead ends: 123927 [2020-12-22 08:29:53,561 INFO L226 Difference]: Without dead ends: 111375 [2020-12-22 08:29:53,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:29:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111375 states. [2020-12-22 08:29:56,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111375 to 30469. [2020-12-22 08:29:56,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30469 states. [2020-12-22 08:29:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30469 states to 30469 states and 43280 transitions. [2020-12-22 08:29:57,036 INFO L78 Accepts]: Start accepts. Automaton has 30469 states and 43280 transitions. Word has length 79 [2020-12-22 08:29:57,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:57,037 INFO L481 AbstractCegarLoop]: Abstraction has 30469 states and 43280 transitions. [2020-12-22 08:29:57,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:29:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 30469 states and 43280 transitions. [2020-12-22 08:29:57,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:29:57,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:57,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:57,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:29:57,049 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:57,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:57,049 INFO L82 PathProgramCache]: Analyzing trace with hash 583742384, now seen corresponding path program 1 times [2020-12-22 08:29:57,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:57,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766346323] [2020-12-22 08:29:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:57,151 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 08:29:57,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766346323] [2020-12-22 08:29:57,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:57,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:29:57,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268129866] [2020-12-22 08:29:57,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:29:57,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:57,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:29:57,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:29:57,153 INFO L87 Difference]: Start difference. First operand 30469 states and 43280 transitions. Second operand 6 states. [2020-12-22 08:30:04,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:04,248 INFO L93 Difference]: Finished difference Result 94709 states and 135172 transitions. [2020-12-22 08:30:04,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:30:04,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 08:30:04,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:04,320 INFO L225 Difference]: With dead ends: 94709 [2020-12-22 08:30:04,320 INFO L226 Difference]: Without dead ends: 65112 [2020-12-22 08:30:04,345 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 08:30:04,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65112 states. [2020-12-22 08:30:08,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65112 to 43909. [2020-12-22 08:30:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43909 states. [2020-12-22 08:30:08,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43909 states to 43909 states and 62582 transitions. [2020-12-22 08:30:08,602 INFO L78 Accepts]: Start accepts. Automaton has 43909 states and 62582 transitions. Word has length 80 [2020-12-22 08:30:08,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:08,602 INFO L481 AbstractCegarLoop]: Abstraction has 43909 states and 62582 transitions. [2020-12-22 08:30:08,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:30:08,603 INFO L276 IsEmpty]: Start isEmpty. Operand 43909 states and 62582 transitions. [2020-12-22 08:30:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:30:08,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:08,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:08,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:30:08,617 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:08,617 INFO L82 PathProgramCache]: Analyzing trace with hash -2109644858, now seen corresponding path program 1 times [2020-12-22 08:30:08,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:08,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266064439] [2020-12-22 08:30:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:30:08,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266064439] [2020-12-22 08:30:08,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:08,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:30:08,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120796275] [2020-12-22 08:30:08,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:30:08,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:08,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:30:08,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:30:08,724 INFO L87 Difference]: Start difference. First operand 43909 states and 62582 transitions. Second operand 4 states. [2020-12-22 08:30:16,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:16,066 INFO L93 Difference]: Finished difference Result 74406 states and 107103 transitions. [2020-12-22 08:30:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:30:16,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 08:30:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:16,151 INFO L225 Difference]: With dead ends: 74406 [2020-12-22 08:30:16,152 INFO L226 Difference]: Without dead ends: 74404 [2020-12-22 08:30:16,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:30:16,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74404 states. [2020-12-22 08:30:20,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74404 to 43907. [2020-12-22 08:30:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43907 states. [2020-12-22 08:30:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43907 states to 43907 states and 62509 transitions. [2020-12-22 08:30:20,698 INFO L78 Accepts]: Start accepts. Automaton has 43907 states and 62509 transitions. Word has length 80 [2020-12-22 08:30:20,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:20,698 INFO L481 AbstractCegarLoop]: Abstraction has 43907 states and 62509 transitions. [2020-12-22 08:30:20,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:30:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 43907 states and 62509 transitions. [2020-12-22 08:30:20,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:30:20,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:20,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:20,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:30:20,714 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:20,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:20,714 INFO L82 PathProgramCache]: Analyzing trace with hash 501951513, now seen corresponding path program 1 times [2020-12-22 08:30:20,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:20,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828070845] [2020-12-22 08:30:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:30:20,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828070845] [2020-12-22 08:30:20,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:20,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:30:20,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015854343] [2020-12-22 08:30:20,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:30:20,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:20,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:30:20,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:30:20,815 INFO L87 Difference]: Start difference. First operand 43907 states and 62509 transitions. Second operand 4 states. [2020-12-22 08:30:28,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:28,564 INFO L93 Difference]: Finished difference Result 74404 states and 107030 transitions. [2020-12-22 08:30:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:30:28,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 08:30:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:28,671 INFO L225 Difference]: With dead ends: 74404 [2020-12-22 08:30:28,671 INFO L226 Difference]: Without dead ends: 74402 [2020-12-22 08:30:28,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:30:28,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74402 states. [2020-12-22 08:30:33,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74402 to 43905. [2020-12-22 08:30:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43905 states. [2020-12-22 08:30:33,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43905 states to 43905 states and 62412 transitions. [2020-12-22 08:30:33,550 INFO L78 Accepts]: Start accepts. Automaton has 43905 states and 62412 transitions. Word has length 80 [2020-12-22 08:30:33,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:33,550 INFO L481 AbstractCegarLoop]: Abstraction has 43905 states and 62412 transitions. [2020-12-22 08:30:33,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:30:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 43905 states and 62412 transitions. [2020-12-22 08:30:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:30:33,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:33,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:33,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:30:33,563 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:33,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:33,564 INFO L82 PathProgramCache]: Analyzing trace with hash -327033425, now seen corresponding path program 1 times [2020-12-22 08:30:33,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:33,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708671470] [2020-12-22 08:30:33,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:30:33,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708671470] [2020-12-22 08:30:33,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:33,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:30:33,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856823553] [2020-12-22 08:30:33,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:30:33,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:33,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:30:33,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:30:33,654 INFO L87 Difference]: Start difference. First operand 43905 states and 62412 transitions. Second operand 5 states. [2020-12-22 08:30:41,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:41,341 INFO L93 Difference]: Finished difference Result 103542 states and 147043 transitions. [2020-12-22 08:30:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:30:41,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-22 08:30:41,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:41,417 INFO L225 Difference]: With dead ends: 103542 [2020-12-22 08:30:41,417 INFO L226 Difference]: Without dead ends: 60442 [2020-12-22 08:30:41,450 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 08:30:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60442 states. [2020-12-22 08:30:48,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60442 to 60211. [2020-12-22 08:30:48,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60211 states. [2020-12-22 08:30:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60211 states to 60211 states and 84919 transitions. [2020-12-22 08:30:48,279 INFO L78 Accepts]: Start accepts. Automaton has 60211 states and 84919 transitions. Word has length 80 [2020-12-22 08:30:48,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:48,280 INFO L481 AbstractCegarLoop]: Abstraction has 60211 states and 84919 transitions. [2020-12-22 08:30:48,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:30:48,280 INFO L276 IsEmpty]: Start isEmpty. Operand 60211 states and 84919 transitions. [2020-12-22 08:30:48,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:30:48,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:48,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:30:48,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:30:48,292 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:48,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:48,292 INFO L82 PathProgramCache]: Analyzing trace with hash 324015783, now seen corresponding path program 1 times [2020-12-22 08:30:48,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:48,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040442854] [2020-12-22 08:30:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:30:48,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040442854] [2020-12-22 08:30:48,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:48,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:30:48,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587676676] [2020-12-22 08:30:48,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:30:48,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:48,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:30:48,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:30:48,411 INFO L87 Difference]: Start difference. First operand 60211 states and 84919 transitions. Second operand 7 states. [2020-12-22 08:31:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:18,175 INFO L93 Difference]: Finished difference Result 236368 states and 333526 transitions. [2020-12-22 08:31:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:31:18,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-12-22 08:31:18,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:18,676 INFO L225 Difference]: With dead ends: 236368 [2020-12-22 08:31:18,676 INFO L226 Difference]: Without dead ends: 203280 [2020-12-22 08:31:18,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:31:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203280 states. [2020-12-22 08:31:27,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203280 to 60295. [2020-12-22 08:31:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60295 states. [2020-12-22 08:31:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60295 states to 60295 states and 85027 transitions. [2020-12-22 08:31:27,887 INFO L78 Accepts]: Start accepts. Automaton has 60295 states and 85027 transitions. Word has length 81 [2020-12-22 08:31:27,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:27,887 INFO L481 AbstractCegarLoop]: Abstraction has 60295 states and 85027 transitions. [2020-12-22 08:31:27,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:31:27,887 INFO L276 IsEmpty]: Start isEmpty. Operand 60295 states and 85027 transitions. [2020-12-22 08:31:27,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:31:27,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:27,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:27,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:31:27,898 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:27,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:27,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1289503009, now seen corresponding path program 1 times [2020-12-22 08:31:27,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:27,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127592981] [2020-12-22 08:31:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:28,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127592981] [2020-12-22 08:31:28,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:28,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:31:28,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520989553] [2020-12-22 08:31:28,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:31:28,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:28,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:31:28,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:28,208 INFO L87 Difference]: Start difference. First operand 60295 states and 85027 transitions. Second operand 7 states. [2020-12-22 08:32:07,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:07,411 INFO L93 Difference]: Finished difference Result 263868 states and 372624 transitions. [2020-12-22 08:32:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:32:07,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-12-22 08:32:07,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:08,013 INFO L225 Difference]: With dead ends: 263868 [2020-12-22 08:32:08,013 INFO L226 Difference]: Without dead ends: 233051 [2020-12-22 08:32:08,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:32:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233051 states. [2020-12-22 08:32:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233051 to 61409. [2020-12-22 08:32:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61409 states. [2020-12-22 08:32:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61409 states to 61409 states and 86515 transitions. [2020-12-22 08:32:18,762 INFO L78 Accepts]: Start accepts. Automaton has 61409 states and 86515 transitions. Word has length 81 [2020-12-22 08:32:18,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:18,762 INFO L481 AbstractCegarLoop]: Abstraction has 61409 states and 86515 transitions. [2020-12-22 08:32:18,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:32:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 61409 states and 86515 transitions. [2020-12-22 08:32:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:32:18,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:18,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:18,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:32:18,776 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:18,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:18,776 INFO L82 PathProgramCache]: Analyzing trace with hash -677267389, now seen corresponding path program 1 times [2020-12-22 08:32:18,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:18,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413832113] [2020-12-22 08:32:18,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:18,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413832113] [2020-12-22 08:32:18,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:18,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:32:18,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849068052] [2020-12-22 08:32:18,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:32:18,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:18,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:32:18,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:32:18,872 INFO L87 Difference]: Start difference. First operand 61409 states and 86515 transitions. Second operand 4 states. [2020-12-22 08:32:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:35,274 INFO L93 Difference]: Finished difference Result 106816 states and 152171 transitions. [2020-12-22 08:32:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:32:35,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-22 08:32:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:35,443 INFO L225 Difference]: With dead ends: 106816 [2020-12-22 08:32:35,444 INFO L226 Difference]: Without dead ends: 106814 [2020-12-22 08:32:35,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:32:35,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106814 states. [2020-12-22 08:32:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106814 to 61407. [2020-12-22 08:32:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61407 states. [2020-12-22 08:32:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61407 states to 61407 states and 86406 transitions. [2020-12-22 08:32:45,604 INFO L78 Accepts]: Start accepts. Automaton has 61407 states and 86406 transitions. Word has length 82 [2020-12-22 08:32:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:45,604 INFO L481 AbstractCegarLoop]: Abstraction has 61407 states and 86406 transitions. [2020-12-22 08:32:45,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:32:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 61407 states and 86406 transitions. [2020-12-22 08:32:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:32:45,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:45,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:45,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:32:45,634 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:45,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:45,635 INFO L82 PathProgramCache]: Analyzing trace with hash -2026028216, now seen corresponding path program 1 times [2020-12-22 08:32:45,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:45,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359649926] [2020-12-22 08:32:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:45,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359649926] [2020-12-22 08:32:45,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:45,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:32:45,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367677660] [2020-12-22 08:32:45,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:32:45,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:45,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:32:45,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:32:45,737 INFO L87 Difference]: Start difference. First operand 61407 states and 86406 transitions. Second operand 4 states.