/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:41:48,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:41:48,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:41:48,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:41:48,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:41:48,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:41:48,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:41:48,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:41:48,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:41:48,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:41:48,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:41:48,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:41:48,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:41:48,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:41:48,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:41:48,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:41:48,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:41:48,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:41:48,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:41:48,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:41:48,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:41:48,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:41:48,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:41:48,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:41:48,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 21:41:48,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 21:41:48,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 21:41:48,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 21:41:48,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 21:41:48,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 21:41:48,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 21:41:48,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 21:41:48,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 21:41:48,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 21:41:48,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 21:41:48,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 21:41:48,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 21:41:48,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 21:41:48,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:41:48,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:41:48,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:41:48,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:41:48,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:41:48,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:41:48,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:41:48,493 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:41:48,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:41:48,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:41:48,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:41:48,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:41:48,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:41:48,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:41:48,496 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:41:48,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:41:48,497 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:41:48,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:41:48,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:41:48,498 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:41:48,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:41:48,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:41:48,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:41:48,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:41:48,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:41:48,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:41:48,500 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:41:48,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:41:48,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:41:48,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:41:48,996 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:41:48,997 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:41:48,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2021-02-21 21:41:49,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e1a08fe8/e8817992e7a34e209fe49454b86baabb/FLAG54500ac3a [2021-02-21 21:41:49,777 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:41:49,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2021-02-21 21:41:49,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e1a08fe8/e8817992e7a34e209fe49454b86baabb/FLAG54500ac3a [2021-02-21 21:41:50,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e1a08fe8/e8817992e7a34e209fe49454b86baabb [2021-02-21 21:41:50,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:41:50,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:41:50,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:41:50,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:41:50,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:41:50,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:41:50" (1/1) ... [2021-02-21 21:41:50,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5721037d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:41:50, skipping insertion in model container [2021-02-21 21:41:50,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:41:50" (1/1) ... [2021-02-21 21:41:50,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:41:50,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:41:50,491 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c[14700,14713] [2021-02-21 21:41:50,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:41:50,532 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:41:50,637 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c[14700,14713] [2021-02-21 21:41:50,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:41:50,662 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:41:50,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:41:50 WrapperNode [2021-02-21 21:41:50,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:41:50,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:41:50,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:41:50,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:41:50,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:41:50" (1/1) ... [2021-02-21 21:41:50,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:41:50" (1/1) ... [2021-02-21 21:41:50,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:41:50" (1/1) ... [2021-02-21 21:41:50,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:41:50" (1/1) ... [2021-02-21 21:41:50,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:41:50" (1/1) ... [2021-02-21 21:41:50,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:41:50" (1/1) ... [2021-02-21 21:41:50,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:41:50" (1/1) ... [2021-02-21 21:41:50,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:41:50,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:41:50,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:41:50,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:41:50,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:41:50" (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 [2021-02-21 21:41:50,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:41:50,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:41:50,986 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:41:50,986 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:41:50,986 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2021-02-21 21:41:50,987 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2021-02-21 21:41:50,987 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2021-02-21 21:41:50,988 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2021-02-21 21:41:50,989 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2021-02-21 21:41:50,989 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2021-02-21 21:41:50,990 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2021-02-21 21:41:50,990 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2021-02-21 21:41:50,990 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2021-02-21 21:41:50,991 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2021-02-21 21:41:50,991 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2021-02-21 21:41:50,992 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2021-02-21 21:41:50,992 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2021-02-21 21:41:50,993 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2021-02-21 21:41:50,994 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-02-21 21:41:50,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:41:50,998 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-02-21 21:41:50,998 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:41:50,998 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:41:50,999 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:41:50,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:41:50,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-21 21:41:50,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-21 21:41:51,000 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-21 21:41:51,000 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-21 21:41:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-21 21:41:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:41:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2021-02-21 21:41:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2021-02-21 21:41:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2021-02-21 21:41:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2021-02-21 21:41:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2021-02-21 21:41:51,003 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2021-02-21 21:41:51,003 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2021-02-21 21:41:51,003 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2021-02-21 21:41:51,003 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-21 21:41:51,004 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2021-02-21 21:41:51,004 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2021-02-21 21:41:51,004 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2021-02-21 21:41:51,004 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2021-02-21 21:41:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2021-02-21 21:41:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-21 21:41:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:41:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:41:51,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:41:51,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:41:51,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:41:51,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:41:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:41:52,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:41:52,529 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:41:52,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:41:52 BoogieIcfgContainer [2021-02-21 21:41:52,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:41:52,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:41:52,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:41:52,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:41:52,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:41:50" (1/3) ... [2021-02-21 21:41:52,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468e9673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:41:52, skipping insertion in model container [2021-02-21 21:41:52,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:41:50" (2/3) ... [2021-02-21 21:41:52,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468e9673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:41:52, skipping insertion in model container [2021-02-21 21:41:52,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:41:52" (3/3) ... [2021-02-21 21:41:52,542 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2021-02-21 21:41:52,549 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:41:52,555 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:41:52,575 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:41:52,600 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:41:52,600 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:41:52,601 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:41:52,601 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:41:52,601 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:41:52,601 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:41:52,601 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:41:52,601 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:41:52,629 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states. [2021-02-21 21:41:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-02-21 21:41:52,651 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:41:52,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:41:52,653 INFO L428 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:41:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:41:52,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1866427219, now seen corresponding path program 1 times [2021-02-21 21:41:52,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:41:52,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456708779] [2021-02-21 21:41:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:41:52,742 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:41:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:53,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:53,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:53,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:53,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:53,547 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:41:53,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:41:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:53,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:53,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:41:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:53,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:53,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:41:53,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 21:41:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:53,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:41:53,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:41:53,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 21:41:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:53,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:53,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:41:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:53,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:53,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-21 21:41:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:53,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:53,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:53,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:54,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:41:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:54,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:54,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:54,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-02-21 21:41:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:54,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:54,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:54,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:54,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:41:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:41:54,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:41:54,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:41:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:41:54,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456708779] [2021-02-21 21:41:54,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:41:54,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 21:41:54,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840326746] [2021-02-21 21:41:54,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 21:41:54,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:41:54,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 21:41:54,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-02-21 21:41:54,290 INFO L87 Difference]: Start difference. First operand 582 states. Second operand 14 states. [2021-02-21 21:41:55,411 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:41:55,873 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:41:56,122 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:42:00,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:42:00,524 INFO L93 Difference]: Finished difference Result 1063 states and 1326 transitions. [2021-02-21 21:42:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-21 21:42:00,526 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 232 [2021-02-21 21:42:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:42:00,564 INFO L225 Difference]: With dead ends: 1063 [2021-02-21 21:42:00,564 INFO L226 Difference]: Without dead ends: 585 [2021-02-21 21:42:00,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-02-21 21:42:00,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-02-21 21:42:00,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 557. [2021-02-21 21:42:00,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2021-02-21 21:42:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 650 transitions. [2021-02-21 21:42:00,888 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 650 transitions. Word has length 232 [2021-02-21 21:42:00,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:42:00,892 INFO L480 AbstractCegarLoop]: Abstraction has 557 states and 650 transitions. [2021-02-21 21:42:00,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 21:42:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 650 transitions. [2021-02-21 21:42:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-02-21 21:42:00,910 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:42:00,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:42:00,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:42:00,911 INFO L428 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:42:00,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:42:00,912 INFO L82 PathProgramCache]: Analyzing trace with hash 76175079, now seen corresponding path program 1 times [2021-02-21 21:42:00,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:42:00,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898950740] [2021-02-21 21:42:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:42:00,921 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:42:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:01,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:01,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:42:01,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:42:01,111 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-02-21 21:42:01,116 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-02-21 21:42:01,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:01,343 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:42:01,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:01,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:01,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:42:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:01,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:42:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:01,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:01,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:42:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:01,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:42:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:01,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:42:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:01,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:01,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:01,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:01,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:42:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:01,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:01,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:01,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:01,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:42:01,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898950740] [2021-02-21 21:42:01,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:42:01,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:42:01,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789317248] [2021-02-21 21:42:01,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:42:01,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:42:01,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:42:01,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:42:01,653 INFO L87 Difference]: Start difference. First operand 557 states and 650 transitions. Second operand 11 states. [2021-02-21 21:42:03,514 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:42:03,733 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-21 21:42:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:42:05,461 INFO L93 Difference]: Finished difference Result 986 states and 1177 transitions. [2021-02-21 21:42:05,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-21 21:42:05,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 243 [2021-02-21 21:42:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:42:05,472 INFO L225 Difference]: With dead ends: 986 [2021-02-21 21:42:05,472 INFO L226 Difference]: Without dead ends: 562 [2021-02-21 21:42:05,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2021-02-21 21:42:05,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-02-21 21:42:05,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-02-21 21:42:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2021-02-21 21:42:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 654 transitions. [2021-02-21 21:42:05,636 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 654 transitions. Word has length 243 [2021-02-21 21:42:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:42:05,638 INFO L480 AbstractCegarLoop]: Abstraction has 562 states and 654 transitions. [2021-02-21 21:42:05,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:42:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 654 transitions. [2021-02-21 21:42:05,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-02-21 21:42:05,645 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:42:05,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:42:05,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:42:05,646 INFO L428 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:42:05,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:42:05,647 INFO L82 PathProgramCache]: Analyzing trace with hash 985442721, now seen corresponding path program 1 times [2021-02-21 21:42:05,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:42:05,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282657914] [2021-02-21 21:42:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:42:05,653 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:42:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:05,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:05,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:42:05,813 WARN L141 QuantifierPusher]: treesize reduction 19, result has 17.4 percent of original size [2021-02-21 21:42:05,814 WARN L147 QuantifierPusher]: treesize reduction 19, result has 17.4 percent of original size 4 [2021-02-21 21:42:05,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:05,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,065 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:42:06,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:42:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:42:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:42:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:42:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:42:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:42:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:42:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:42:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:42:06,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:42:06,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:42:06,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:42:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-21 21:42:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-02-21 21:42:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:06,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:06,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-21 21:42:06,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282657914] [2021-02-21 21:42:06,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:42:06,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 21:42:06,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364626595] [2021-02-21 21:42:06,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 21:42:06,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:42:06,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 21:42:06,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-02-21 21:42:06,594 INFO L87 Difference]: Start difference. First operand 562 states and 654 transitions. Second operand 16 states. [2021-02-21 21:42:06,727 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:42:06,874 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:42:07,514 WARN L202 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:42:09,836 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-21 21:42:09,964 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:42:10,108 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-21 21:42:10,465 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-21 21:42:10,950 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:42:11,969 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-02-21 21:42:13,498 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:42:14,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:42:14,201 INFO L93 Difference]: Finished difference Result 1191 states and 1400 transitions. [2021-02-21 21:42:14,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-21 21:42:14,201 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 316 [2021-02-21 21:42:14,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:42:14,211 INFO L225 Difference]: With dead ends: 1191 [2021-02-21 21:42:14,211 INFO L226 Difference]: Without dead ends: 762 [2021-02-21 21:42:14,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=578, Invalid=1774, Unknown=0, NotChecked=0, Total=2352 [2021-02-21 21:42:14,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-02-21 21:42:14,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 754. [2021-02-21 21:42:14,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2021-02-21 21:42:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 871 transitions. [2021-02-21 21:42:14,409 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 871 transitions. Word has length 316 [2021-02-21 21:42:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:42:14,410 INFO L480 AbstractCegarLoop]: Abstraction has 754 states and 871 transitions. [2021-02-21 21:42:14,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 21:42:14,410 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 871 transitions. [2021-02-21 21:42:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-02-21 21:42:14,415 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:42:14,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:42:14,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:42:14,416 INFO L428 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:42:14,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:42:14,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1167012846, now seen corresponding path program 1 times [2021-02-21 21:42:14,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:42:14,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174895405] [2021-02-21 21:42:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:42:14,420 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:42:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:14,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:42:14,509 WARN L141 QuantifierPusher]: treesize reduction 19, result has 17.4 percent of original size [2021-02-21 21:42:14,510 WARN L147 QuantifierPusher]: treesize reduction 19, result has 17.4 percent of original size 4 [2021-02-21 21:42:14,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:14,734 WARN L202 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:42:14,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:14,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:14,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:42:14,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:42:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:14,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:14,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:42:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:14,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:14,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:42:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:14,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:42:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:14,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:14,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:42:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:14,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:14,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:14,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:42:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:14,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:14,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:14,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:42:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:14,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:42:14,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:14,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:42:15,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:15,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:42:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:42:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:15,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:15,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:15,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-21 21:42:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:15,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:15,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:15,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-02-21 21:42:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:15,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:15,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:42:15,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174895405] [2021-02-21 21:42:15,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:42:15,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 21:42:15,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581422866] [2021-02-21 21:42:15,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 21:42:15,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:42:15,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 21:42:15,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-02-21 21:42:15,160 INFO L87 Difference]: Start difference. First operand 754 states and 871 transitions. Second operand 16 states. [2021-02-21 21:42:15,415 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:42:16,197 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:42:18,563 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-21 21:42:18,699 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-21 21:42:18,973 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-21 21:42:19,442 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-21 21:42:19,790 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:42:22,083 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-21 21:42:22,221 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-21 21:42:22,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:42:22,884 INFO L93 Difference]: Finished difference Result 1199 states and 1410 transitions. [2021-02-21 21:42:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-21 21:42:22,885 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 317 [2021-02-21 21:42:22,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:42:22,891 INFO L225 Difference]: With dead ends: 1199 [2021-02-21 21:42:22,891 INFO L226 Difference]: Without dead ends: 767 [2021-02-21 21:42:22,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=606, Invalid=2046, Unknown=0, NotChecked=0, Total=2652 [2021-02-21 21:42:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-02-21 21:42:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 754. [2021-02-21 21:42:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2021-02-21 21:42:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 871 transitions. [2021-02-21 21:42:23,067 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 871 transitions. Word has length 317 [2021-02-21 21:42:23,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:42:23,068 INFO L480 AbstractCegarLoop]: Abstraction has 754 states and 871 transitions. [2021-02-21 21:42:23,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 21:42:23,068 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 871 transitions. [2021-02-21 21:42:23,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-02-21 21:42:23,074 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:42:23,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:42:23,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:42:23,074 INFO L428 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:42:23,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:42:23,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1260005446, now seen corresponding path program 1 times [2021-02-21 21:42:23,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:42:23,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868056235] [2021-02-21 21:42:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:42:23,079 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:42:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:42:23,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,406 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:42:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:42:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:42:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:42:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:42:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:42:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:42:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:42:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:42:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:42:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:42:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-02-21 21:42:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:23,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:23,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:23,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:42:23,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868056235] [2021-02-21 21:42:23,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:42:23,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 21:42:23,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707493370] [2021-02-21 21:42:23,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 21:42:23,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:42:23,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 21:42:23,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:42:23,811 INFO L87 Difference]: Start difference. First operand 754 states and 871 transitions. Second operand 12 states. [2021-02-21 21:42:25,648 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-21 21:42:26,729 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-21 21:42:29,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:42:29,928 INFO L93 Difference]: Finished difference Result 1646 states and 1951 transitions. [2021-02-21 21:42:29,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-21 21:42:29,929 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 319 [2021-02-21 21:42:29,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:42:29,940 INFO L225 Difference]: With dead ends: 1646 [2021-02-21 21:42:29,940 INFO L226 Difference]: Without dead ends: 1214 [2021-02-21 21:42:29,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=347, Invalid=843, Unknown=0, NotChecked=0, Total=1190 [2021-02-21 21:42:29,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2021-02-21 21:42:30,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1172. [2021-02-21 21:42:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2021-02-21 21:42:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1380 transitions. [2021-02-21 21:42:30,262 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1380 transitions. Word has length 319 [2021-02-21 21:42:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:42:30,262 INFO L480 AbstractCegarLoop]: Abstraction has 1172 states and 1380 transitions. [2021-02-21 21:42:30,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 21:42:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1380 transitions. [2021-02-21 21:42:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-02-21 21:42:30,266 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:42:30,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:42:30,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:42:30,267 INFO L428 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:42:30,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:42:30,267 INFO L82 PathProgramCache]: Analyzing trace with hash 149582571, now seen corresponding path program 1 times [2021-02-21 21:42:30,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:42:30,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699643928] [2021-02-21 21:42:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:42:30,271 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:42:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:42:30,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,556 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:42:30,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:42:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:42:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:42:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:42:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:42:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:42:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:42:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:42:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:42:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:42:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-21 21:42:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:30,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:30,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:42:30,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699643928] [2021-02-21 21:42:30,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:42:30,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 21:42:30,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249599077] [2021-02-21 21:42:30,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 21:42:30,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:42:30,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 21:42:30,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:42:30,930 INFO L87 Difference]: Start difference. First operand 1172 states and 1380 transitions. Second operand 12 states. [2021-02-21 21:42:31,047 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:42:33,653 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-21 21:42:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:42:37,751 INFO L93 Difference]: Finished difference Result 2592 states and 3130 transitions. [2021-02-21 21:42:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-21 21:42:37,751 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 320 [2021-02-21 21:42:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:42:37,764 INFO L225 Difference]: With dead ends: 2592 [2021-02-21 21:42:37,764 INFO L226 Difference]: Without dead ends: 1832 [2021-02-21 21:42:37,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=348, Invalid=842, Unknown=0, NotChecked=0, Total=1190 [2021-02-21 21:42:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2021-02-21 21:42:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1812. [2021-02-21 21:42:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1812 states. [2021-02-21 21:42:38,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2173 transitions. [2021-02-21 21:42:38,335 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2173 transitions. Word has length 320 [2021-02-21 21:42:38,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:42:38,336 INFO L480 AbstractCegarLoop]: Abstraction has 1812 states and 2173 transitions. [2021-02-21 21:42:38,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 21:42:38,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2173 transitions. [2021-02-21 21:42:38,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-02-21 21:42:38,339 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:42:38,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:42:38,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:42:38,340 INFO L428 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:42:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:42:38,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1154331829, now seen corresponding path program 1 times [2021-02-21 21:42:38,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:42:38,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393877596] [2021-02-21 21:42:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:42:38,344 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:42:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:42:38,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:42:38,439 WARN L141 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size [2021-02-21 21:42:38,440 WARN L147 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size 36 [2021-02-21 21:42:38,447 WARN L141 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size [2021-02-21 21:42:38,448 WARN L147 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size 38 [2021-02-21 21:42:38,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,640 WARN L202 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:42:38,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:42:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:42:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:42:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:42:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:42:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:42:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:42:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:42:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:42:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:38,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-21 21:42:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:38,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:38,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:42:39,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393877596] [2021-02-21 21:42:39,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:42:39,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:42:39,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121579942] [2021-02-21 21:42:39,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:42:39,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:42:39,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:42:39,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:42:39,033 INFO L87 Difference]: Start difference. First operand 1812 states and 2173 transitions. Second operand 13 states. [2021-02-21 21:42:39,156 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:42:42,548 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:42:42,775 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-21 21:42:44,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:42:44,325 INFO L93 Difference]: Finished difference Result 3210 states and 3909 transitions. [2021-02-21 21:42:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 21:42:44,326 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 320 [2021-02-21 21:42:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:42:44,338 INFO L225 Difference]: With dead ends: 3210 [2021-02-21 21:42:44,338 INFO L226 Difference]: Without dead ends: 1836 [2021-02-21 21:42:44,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-21 21:42:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-02-21 21:42:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1836. [2021-02-21 21:42:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2021-02-21 21:42:44,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2193 transitions. [2021-02-21 21:42:44,864 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2193 transitions. Word has length 320 [2021-02-21 21:42:44,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:42:44,865 INFO L480 AbstractCegarLoop]: Abstraction has 1836 states and 2193 transitions. [2021-02-21 21:42:44,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:42:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2193 transitions. [2021-02-21 21:42:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-02-21 21:42:44,869 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:42:44,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:42:44,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 21:42:44,871 INFO L428 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:42:44,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:42:44,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1735295062, now seen corresponding path program 1 times [2021-02-21 21:42:44,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:42:44,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632459273] [2021-02-21 21:42:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:42:44,878 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:42:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:44,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:44,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:42:45,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,225 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:42:45,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:42:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:42:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:42:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:42:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:42:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:42:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:42:45,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-02-21 21:42:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:42:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:42:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-02-21 21:42:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-02-21 21:42:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:45,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:45,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:42:45,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632459273] [2021-02-21 21:42:45,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:42:45,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 21:42:45,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031268614] [2021-02-21 21:42:45,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 21:42:45,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:42:45,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 21:42:45,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:42:45,738 INFO L87 Difference]: Start difference. First operand 1836 states and 2193 transitions. Second operand 12 states. [2021-02-21 21:42:46,557 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:42:48,862 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-21 21:42:52,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:42:52,205 INFO L93 Difference]: Finished difference Result 3262 states and 3940 transitions. [2021-02-21 21:42:52,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-21 21:42:52,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 339 [2021-02-21 21:42:52,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:42:52,218 INFO L225 Difference]: With dead ends: 3262 [2021-02-21 21:42:52,218 INFO L226 Difference]: Without dead ends: 1864 [2021-02-21 21:42:52,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=352, Invalid=980, Unknown=0, NotChecked=0, Total=1332 [2021-02-21 21:42:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-02-21 21:42:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1844. [2021-02-21 21:42:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1844 states. [2021-02-21 21:42:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2198 transitions. [2021-02-21 21:42:52,729 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2198 transitions. Word has length 339 [2021-02-21 21:42:52,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:42:52,729 INFO L480 AbstractCegarLoop]: Abstraction has 1844 states and 2198 transitions. [2021-02-21 21:42:52,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 21:42:52,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2198 transitions. [2021-02-21 21:42:52,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-02-21 21:42:52,733 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:42:52,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:42:52,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 21:42:52,734 INFO L428 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:42:52,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:42:52,734 INFO L82 PathProgramCache]: Analyzing trace with hash -180945527, now seen corresponding path program 1 times [2021-02-21 21:42:52,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:42:52,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274165875] [2021-02-21 21:42:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:42:52,738 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:42:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:52,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:52,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:52,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:52,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:42:52,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:52,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:42:52,831 WARN L141 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size [2021-02-21 21:42:52,832 WARN L147 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size 36 [2021-02-21 21:42:52,838 WARN L141 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size [2021-02-21 21:42:52,839 WARN L147 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size 38 [2021-02-21 21:42:52,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:52,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,051 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:42:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:42:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:42:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:42:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:42:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:42:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:42:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:42:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:42:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:42:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-21 21:42:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-21 21:42:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:53,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:53,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:42:53,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274165875] [2021-02-21 21:42:53,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:42:53,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:42:53,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186565122] [2021-02-21 21:42:53,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:42:53,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:42:53,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:42:53,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:42:53,425 INFO L87 Difference]: Start difference. First operand 1844 states and 2198 transitions. Second operand 13 states. [2021-02-21 21:42:56,959 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:42:57,203 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-21 21:42:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:42:58,618 INFO L93 Difference]: Finished difference Result 3266 states and 3961 transitions. [2021-02-21 21:42:58,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 21:42:58,619 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 331 [2021-02-21 21:42:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:42:58,630 INFO L225 Difference]: With dead ends: 3266 [2021-02-21 21:42:58,630 INFO L226 Difference]: Without dead ends: 1868 [2021-02-21 21:42:58,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-21 21:42:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-02-21 21:42:59,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1868. [2021-02-21 21:42:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1868 states. [2021-02-21 21:42:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2218 transitions. [2021-02-21 21:42:59,220 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2218 transitions. Word has length 331 [2021-02-21 21:42:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:42:59,221 INFO L480 AbstractCegarLoop]: Abstraction has 1868 states and 2218 transitions. [2021-02-21 21:42:59,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:42:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2218 transitions. [2021-02-21 21:42:59,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-02-21 21:42:59,225 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:42:59,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:42:59,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 21:42:59,226 INFO L428 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:42:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:42:59,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1023019346, now seen corresponding path program 1 times [2021-02-21 21:42:59,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:42:59,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302838587] [2021-02-21 21:42:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:42:59,230 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:42:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:42:59,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:42:59,321 WARN L141 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size [2021-02-21 21:42:59,322 WARN L147 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size 36 [2021-02-21 21:42:59,329 WARN L141 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size [2021-02-21 21:42:59,330 WARN L147 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size 38 [2021-02-21 21:42:59,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,523 WARN L202 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:42:59,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:42:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:42:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:42:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:42:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:42:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:42:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:42:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:42:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:42:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:42:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:42:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-21 21:42:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-21 21:42:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-02-21 21:42:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:42:59,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:42:59,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:42:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:42:59,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302838587] [2021-02-21 21:42:59,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:42:59,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:42:59,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55944936] [2021-02-21 21:42:59,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:42:59,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:42:59,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:42:59,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:42:59,843 INFO L87 Difference]: Start difference. First operand 1868 states and 2218 transitions. Second operand 13 states. [2021-02-21 21:42:59,960 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:43:03,192 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:43:03,478 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-21 21:43:04,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:43:04,887 INFO L93 Difference]: Finished difference Result 3314 states and 4001 transitions. [2021-02-21 21:43:04,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 21:43:04,888 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 341 [2021-02-21 21:43:04,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:43:04,899 INFO L225 Difference]: With dead ends: 3314 [2021-02-21 21:43:04,899 INFO L226 Difference]: Without dead ends: 1892 [2021-02-21 21:43:04,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-21 21:43:04,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-02-21 21:43:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1892. [2021-02-21 21:43:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1892 states. [2021-02-21 21:43:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2238 transitions. [2021-02-21 21:43:05,358 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2238 transitions. Word has length 341 [2021-02-21 21:43:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:43:05,359 INFO L480 AbstractCegarLoop]: Abstraction has 1892 states and 2238 transitions. [2021-02-21 21:43:05,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:43:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2238 transitions. [2021-02-21 21:43:05,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-02-21 21:43:05,364 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:43:05,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:43:05,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 21:43:05,365 INFO L428 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:43:05,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:43:05,365 INFO L82 PathProgramCache]: Analyzing trace with hash 553637762, now seen corresponding path program 1 times [2021-02-21 21:43:05,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:43:05,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732040325] [2021-02-21 21:43:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:43:05,369 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:43:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:43:05,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,631 WARN L202 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:43:05,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:43:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:43:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:43:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:43:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:43:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:43:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:43:05,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 21:43:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-02-21 21:43:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:43:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:43:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-02-21 21:43:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-02-21 21:43:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-02-21 21:43:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:05,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:05,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:43:05,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732040325] [2021-02-21 21:43:05,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:43:05,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 21:43:05,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745450395] [2021-02-21 21:43:05,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 21:43:05,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:43:05,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 21:43:05,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:43:05,962 INFO L87 Difference]: Start difference. First operand 1892 states and 2238 transitions. Second operand 12 states. [2021-02-21 21:43:06,082 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:43:06,829 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:43:09,520 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-21 21:43:09,759 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-02-21 21:43:12,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:43:12,389 INFO L93 Difference]: Finished difference Result 3420 states and 4080 transitions. [2021-02-21 21:43:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-21 21:43:12,390 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 349 [2021-02-21 21:43:12,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:43:12,401 INFO L225 Difference]: With dead ends: 3420 [2021-02-21 21:43:12,402 INFO L226 Difference]: Without dead ends: 1974 [2021-02-21 21:43:12,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=351, Invalid=981, Unknown=0, NotChecked=0, Total=1332 [2021-02-21 21:43:12,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2021-02-21 21:43:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1892. [2021-02-21 21:43:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1892 states. [2021-02-21 21:43:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2234 transitions. [2021-02-21 21:43:12,825 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2234 transitions. Word has length 349 [2021-02-21 21:43:12,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:43:12,826 INFO L480 AbstractCegarLoop]: Abstraction has 1892 states and 2234 transitions. [2021-02-21 21:43:12,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 21:43:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2234 transitions. [2021-02-21 21:43:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-02-21 21:43:12,830 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:43:12,831 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:43:12,831 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 21:43:12,831 INFO L428 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:43:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:43:12,832 INFO L82 PathProgramCache]: Analyzing trace with hash -2104728561, now seen corresponding path program 1 times [2021-02-21 21:43:12,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:43:12,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481994582] [2021-02-21 21:43:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:43:12,835 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:43:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:12,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:12,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:12,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:12,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:12,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:12,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:12,922 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-02-21 21:43:12,923 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-02-21 21:43:12,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:12,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,118 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:43:13,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:43:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:43:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:43:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:43:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:43:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:43:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:43:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:43:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:43:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:43:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-21 21:43:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-21 21:43:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-02-21 21:43:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:13,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:13,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:43:13,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481994582] [2021-02-21 21:43:13,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:43:13,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:43:13,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434455018] [2021-02-21 21:43:13,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:43:13,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:43:13,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:43:13,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:43:13,500 INFO L87 Difference]: Start difference. First operand 1892 states and 2234 transitions. Second operand 13 states. [2021-02-21 21:43:13,623 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:43:16,636 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:43:16,895 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-21 21:43:18,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:43:18,344 INFO L93 Difference]: Finished difference Result 3358 states and 4015 transitions. [2021-02-21 21:43:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 21:43:18,345 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 341 [2021-02-21 21:43:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:43:18,355 INFO L225 Difference]: With dead ends: 3358 [2021-02-21 21:43:18,355 INFO L226 Difference]: Without dead ends: 1912 [2021-02-21 21:43:18,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-21 21:43:18,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2021-02-21 21:43:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1912. [2021-02-21 21:43:18,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1912 states. [2021-02-21 21:43:18,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2250 transitions. [2021-02-21 21:43:18,974 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2250 transitions. Word has length 341 [2021-02-21 21:43:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:43:18,975 INFO L480 AbstractCegarLoop]: Abstraction has 1912 states and 2250 transitions. [2021-02-21 21:43:18,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:43:18,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2250 transitions. [2021-02-21 21:43:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-02-21 21:43:18,979 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:43:18,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:43:18,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 21:43:18,980 INFO L428 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:43:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:43:18,981 INFO L82 PathProgramCache]: Analyzing trace with hash -483678640, now seen corresponding path program 1 times [2021-02-21 21:43:18,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:43:18,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333085998] [2021-02-21 21:43:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:43:18,984 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:43:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:19,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:43:19,063 WARN L141 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size [2021-02-21 21:43:19,064 WARN L147 QuantifierPusher]: treesize reduction 4, result has 90.0 percent of original size 36 [2021-02-21 21:43:19,070 WARN L141 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size [2021-02-21 21:43:19,071 WARN L147 QuantifierPusher]: treesize reduction 13, result has 74.5 percent of original size 38 [2021-02-21 21:43:19,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,283 WARN L202 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:43:19,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:43:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:43:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:43:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:43:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:43:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:43:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:43:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:43:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:43:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:43:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-21 21:43:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-21 21:43:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-02-21 21:43:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-02-21 21:43:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:19,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:19,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-21 21:43:19,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333085998] [2021-02-21 21:43:19,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:43:19,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:43:19,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032074566] [2021-02-21 21:43:19,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:43:19,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:43:19,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:43:19,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:43:19,651 INFO L87 Difference]: Start difference. First operand 1912 states and 2250 transitions. Second operand 13 states. [2021-02-21 21:43:19,773 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:43:23,403 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:43:23,643 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-21 21:43:24,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:43:24,563 INFO L93 Difference]: Finished difference Result 3406 states and 4059 transitions. [2021-02-21 21:43:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 21:43:24,564 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 351 [2021-02-21 21:43:24,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:43:24,574 INFO L225 Difference]: With dead ends: 3406 [2021-02-21 21:43:24,574 INFO L226 Difference]: Without dead ends: 1940 [2021-02-21 21:43:24,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-21 21:43:24,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2021-02-21 21:43:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1940. [2021-02-21 21:43:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2021-02-21 21:43:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2274 transitions. [2021-02-21 21:43:25,013 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2274 transitions. Word has length 351 [2021-02-21 21:43:25,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:43:25,014 INFO L480 AbstractCegarLoop]: Abstraction has 1940 states and 2274 transitions. [2021-02-21 21:43:25,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:43:25,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2274 transitions. [2021-02-21 21:43:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-02-21 21:43:25,018 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:43:25,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:43:25,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 21:43:25,019 INFO L428 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:43:25,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:43:25,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1024980272, now seen corresponding path program 1 times [2021-02-21 21:43:25,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:43:25,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049708929] [2021-02-21 21:43:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:43:25,022 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:43:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:25,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:25,103 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size [2021-02-21 21:43:25,106 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.7 percent of original size 36 [2021-02-21 21:43:25,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,316 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:43:25,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:43:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:43:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:43:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:43:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:43:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:43:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:43:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:43:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:43:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:43:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-21 21:43:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-21 21:43:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-02-21 21:43:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-02-21 21:43:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-02-21 21:43:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:25,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:25,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:43:25,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049708929] [2021-02-21 21:43:25,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:43:25,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:43:25,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640092349] [2021-02-21 21:43:25,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:43:25,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:43:25,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:43:25,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:43:25,684 INFO L87 Difference]: Start difference. First operand 1940 states and 2274 transitions. Second operand 13 states. [2021-02-21 21:43:25,804 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:43:29,158 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:43:29,407 WARN L202 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-21 21:43:30,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:43:30,676 INFO L93 Difference]: Finished difference Result 3454 states and 4095 transitions. [2021-02-21 21:43:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 21:43:30,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 360 [2021-02-21 21:43:30,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:43:30,687 INFO L225 Difference]: With dead ends: 3454 [2021-02-21 21:43:30,687 INFO L226 Difference]: Without dead ends: 1960 [2021-02-21 21:43:30,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2021-02-21 21:43:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2021-02-21 21:43:31,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1960. [2021-02-21 21:43:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2021-02-21 21:43:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2290 transitions. [2021-02-21 21:43:31,148 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2290 transitions. Word has length 360 [2021-02-21 21:43:31,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:43:31,148 INFO L480 AbstractCegarLoop]: Abstraction has 1960 states and 2290 transitions. [2021-02-21 21:43:31,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:43:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2290 transitions. [2021-02-21 21:43:31,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-02-21 21:43:31,153 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:43:31,154 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:43:31,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-21 21:43:31,154 INFO L428 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:43:31,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:43:31,155 INFO L82 PathProgramCache]: Analyzing trace with hash -158957949, now seen corresponding path program 1 times [2021-02-21 21:43:31,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:43:31,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911091762] [2021-02-21 21:43:31,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:43:31,158 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:43:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:43:31,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:43:31,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,522 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:43:31,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:43:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:43:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:43:31,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:43:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:43:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:43:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:43:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:31,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:31,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:31,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:43:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:43:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:43:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:43:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-02-21 21:43:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:31,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:43:31,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:43:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:43:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:43:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:43:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-21 21:43:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-21 21:43:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:31,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:31,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:43:32,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911091762] [2021-02-21 21:43:32,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:43:32,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-21 21:43:32,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894059080] [2021-02-21 21:43:32,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-21 21:43:32,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:43:32,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-21 21:43:32,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:43:32,055 INFO L87 Difference]: Start difference. First operand 1960 states and 2290 transitions. Second operand 19 states. [2021-02-21 21:43:32,186 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:43:33,031 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-21 21:43:33,683 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:43:34,614 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2021-02-21 21:43:35,281 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:43:36,695 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-21 21:43:37,762 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:43:38,072 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:43:38,357 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-21 21:43:38,615 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:43:40,970 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-02-21 21:43:41,577 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-21 21:43:41,851 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-21 21:43:42,132 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:43:42,385 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-21 21:43:42,653 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-21 21:43:42,932 WARN L202 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:43:43,458 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-21 21:43:47,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:43:47,696 INFO L93 Difference]: Finished difference Result 4884 states and 5719 transitions. [2021-02-21 21:43:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-02-21 21:43:47,697 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 362 [2021-02-21 21:43:47,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:43:47,718 INFO L225 Difference]: With dead ends: 4884 [2021-02-21 21:43:47,718 INFO L226 Difference]: Without dead ends: 3350 [2021-02-21 21:43:47,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1009, Invalid=3821, Unknown=0, NotChecked=0, Total=4830 [2021-02-21 21:43:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2021-02-21 21:43:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 3122. [2021-02-21 21:43:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3122 states. [2021-02-21 21:43:48,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 3626 transitions. [2021-02-21 21:43:48,719 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 3626 transitions. Word has length 362 [2021-02-21 21:43:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:43:48,719 INFO L480 AbstractCegarLoop]: Abstraction has 3122 states and 3626 transitions. [2021-02-21 21:43:48,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-21 21:43:48,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 3626 transitions. [2021-02-21 21:43:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-02-21 21:43:48,723 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:43:48,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:43:48,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-21 21:43:48,724 INFO L428 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:43:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:43:48,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1056560781, now seen corresponding path program 1 times [2021-02-21 21:43:48,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:43:48,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412975860] [2021-02-21 21:43:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:43:48,728 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:43:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:48,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:48,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:48,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:48,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:43:48,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:48,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:43:48,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:48,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:43:48,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:48,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:43:48,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:48,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,050 WARN L202 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:43:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:43:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:43:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:43:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:43:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:43:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:43:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:43:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:43:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:43:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:43:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:49,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:49,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:43:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:43:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:49,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:49,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-02-21 21:43:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-02-21 21:43:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-02-21 21:43:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-02-21 21:43:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-02-21 21:43:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:43:49,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:43:49,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:43:49,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:43:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-21 21:43:49,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412975860] [2021-02-21 21:43:49,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:43:49,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-21 21:43:49,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070489257] [2021-02-21 21:43:49,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-21 21:43:49,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:43:49,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-21 21:43:49,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-02-21 21:43:49,534 INFO L87 Difference]: Start difference. First operand 3122 states and 3626 transitions. Second operand 18 states. [2021-02-21 21:43:49,659 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:43:50,862 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:43:51,134 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:43:51,855 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-02-21 21:43:53,738 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:43:54,097 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2021-02-21 21:43:54,593 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:43:57,035 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-21 21:43:58,279 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-21 21:43:58,735 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-21 21:44:01,347 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:44:01,615 WARN L202 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-21 21:44:01,885 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-21 21:44:02,140 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-21 21:44:02,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:02,999 INFO L93 Difference]: Finished difference Result 6132 states and 7132 transitions. [2021-02-21 21:44:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-21 21:44:03,000 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 363 [2021-02-21 21:44:03,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:03,019 INFO L225 Difference]: With dead ends: 6132 [2021-02-21 21:44:03,019 INFO L226 Difference]: Without dead ends: 3946 [2021-02-21 21:44:03,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=904, Invalid=2756, Unknown=0, NotChecked=0, Total=3660 [2021-02-21 21:44:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-02-21 21:44:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3342. [2021-02-21 21:44:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3342 states. [2021-02-21 21:44:04,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3342 states to 3342 states and 3862 transitions. [2021-02-21 21:44:04,097 INFO L78 Accepts]: Start accepts. Automaton has 3342 states and 3862 transitions. Word has length 363 [2021-02-21 21:44:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:04,098 INFO L480 AbstractCegarLoop]: Abstraction has 3342 states and 3862 transitions. [2021-02-21 21:44:04,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-21 21:44:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3342 states and 3862 transitions. [2021-02-21 21:44:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2021-02-21 21:44:04,102 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:04,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:44:04,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-21 21:44:04,103 INFO L428 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:04,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:04,103 INFO L82 PathProgramCache]: Analyzing trace with hash 375308354, now seen corresponding path program 1 times [2021-02-21 21:44:04,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:04,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722468691] [2021-02-21 21:44:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:04,106 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:04,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:04,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:44:04,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:44:04,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:44:04,210 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-21 21:44:04,211 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-21 21:44:04,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,472 WARN L202 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:44:04,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:44:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:44:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:44:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:44:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:44:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:44:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:44:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:44:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:44:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:44:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:44:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:44:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-02-21 21:44:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:04,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:44:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:44:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:44:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-21 21:44:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-21 21:44:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:04,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:04,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-21 21:44:04,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722468691] [2021-02-21 21:44:04,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:04,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-21 21:44:04,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843018475] [2021-02-21 21:44:04,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-21 21:44:04,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:04,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-21 21:44:04,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:44:04,963 INFO L87 Difference]: Start difference. First operand 3342 states and 3862 transitions. Second operand 19 states. [2021-02-21 21:44:05,091 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:44:06,242 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:44:11,548 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:44:12,093 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:44:12,421 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-21 21:44:13,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:13,653 INFO L93 Difference]: Finished difference Result 3570 states and 4133 transitions. [2021-02-21 21:44:13,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-21 21:44:13,654 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 364 [2021-02-21 21:44:13,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:13,668 INFO L225 Difference]: With dead ends: 3570 [2021-02-21 21:44:13,668 INFO L226 Difference]: Without dead ends: 3568 [2021-02-21 21:44:13,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2021-02-21 21:44:13,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2021-02-21 21:44:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3370. [2021-02-21 21:44:14,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3370 states. [2021-02-21 21:44:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 3890 transitions. [2021-02-21 21:44:14,677 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 3890 transitions. Word has length 364 [2021-02-21 21:44:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:14,678 INFO L480 AbstractCegarLoop]: Abstraction has 3370 states and 3890 transitions. [2021-02-21 21:44:14,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-21 21:44:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 3890 transitions. [2021-02-21 21:44:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-02-21 21:44:14,683 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:14,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:44:14,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-21 21:44:14,683 INFO L428 AbstractCegarLoop]: === Iteration 18 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1636021951, now seen corresponding path program 1 times [2021-02-21 21:44:14,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:14,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776777310] [2021-02-21 21:44:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:14,687 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:14,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:14,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:14,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:14,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:44:14,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:14,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:44:14,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:14,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,007 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:44:15,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:44:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:44:15,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:44:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:44:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:44:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:44:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:44:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:44:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:15,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:15,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:44:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:15,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:15,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:44:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:44:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:44:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-02-21 21:44:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:15,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:44:15,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:44:15,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:44:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:44:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:44:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-21 21:44:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-21 21:44:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:15,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-21 21:44:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:15,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:15,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-21 21:44:15,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776777310] [2021-02-21 21:44:15,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:15,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-21 21:44:15,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434816769] [2021-02-21 21:44:15,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-21 21:44:15,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:15,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-21 21:44:15,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:44:15,701 INFO L87 Difference]: Start difference. First operand 3370 states and 3890 transitions. Second operand 19 states. [2021-02-21 21:44:15,830 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:44:16,714 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-21 21:44:17,442 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:44:19,422 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2021-02-21 21:44:20,087 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:44:20,598 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-21 21:44:21,933 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:44:25,025 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-21 21:44:25,579 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-21 21:44:25,859 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:44:26,197 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-21 21:44:26,506 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-21 21:44:26,759 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:44:27,073 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:44:30,869 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-21 21:44:32,725 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-02-21 21:44:34,033 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:44:34,317 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-21 21:44:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:34,700 INFO L93 Difference]: Finished difference Result 8108 states and 9433 transitions. [2021-02-21 21:44:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-02-21 21:44:34,702 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 372 [2021-02-21 21:44:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:34,724 INFO L225 Difference]: With dead ends: 8108 [2021-02-21 21:44:34,724 INFO L226 Difference]: Without dead ends: 5746 [2021-02-21 21:44:34,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1097, Invalid=4305, Unknown=0, NotChecked=0, Total=5402 [2021-02-21 21:44:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5746 states. [2021-02-21 21:44:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5746 to 3949. [2021-02-21 21:44:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3949 states. [2021-02-21 21:44:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 4586 transitions. [2021-02-21 21:44:35,991 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 4586 transitions. Word has length 372 [2021-02-21 21:44:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:35,991 INFO L480 AbstractCegarLoop]: Abstraction has 3949 states and 4586 transitions. [2021-02-21 21:44:35,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-21 21:44:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 4586 transitions. [2021-02-21 21:44:35,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-02-21 21:44:35,995 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:35,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:44:35,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-21 21:44:35,996 INFO L428 AbstractCegarLoop]: === Iteration 19 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:35,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:35,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1057181460, now seen corresponding path program 1 times [2021-02-21 21:44:35,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:35,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123621033] [2021-02-21 21:44:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:36,000 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,075 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-02-21 21:44:36,077 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size 20 [2021-02-21 21:44:36,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,280 WARN L202 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:44:36,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:44:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:44:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:44:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:44:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:44:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:36,422 WARN L141 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size [2021-02-21 21:44:36,423 WARN L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-02-21 21:44:36,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:44:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:36,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-02-21 21:44:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:44:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-02-21 21:44:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:44:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:44:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-02-21 21:44:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,696 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.4 percent of original size [2021-02-21 21:44:36,696 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.4 percent of original size 17 [2021-02-21 21:44:36,726 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size [2021-02-21 21:44:36,727 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.2 percent of original size 20 [2021-02-21 21:44:36,759 WARN L141 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-02-21 21:44:36,760 WARN L147 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size 40 [2021-02-21 21:44:36,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:44:36,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:44:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 21:44:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:44:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-21 21:44:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:36,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-21 21:44:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:36,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-21 21:44:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:36,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:36,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:44:37,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123621033] [2021-02-21 21:44:37,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:37,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-21 21:44:37,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271714682] [2021-02-21 21:44:37,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-21 21:44:37,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:37,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-21 21:44:37,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-02-21 21:44:37,077 INFO L87 Difference]: Start difference. First operand 3949 states and 4586 transitions. Second operand 20 states. [2021-02-21 21:44:37,225 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:44:39,077 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:44:40,049 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-02-21 21:44:40,486 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-02-21 21:44:42,536 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-21 21:44:42,895 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-21 21:44:43,048 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-02-21 21:44:44,582 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-21 21:44:44,952 WARN L202 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-21 21:44:45,527 WARN L202 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2021-02-21 21:44:46,093 WARN L202 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 161 [2021-02-21 21:44:46,398 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:44:52,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:44:52,678 INFO L93 Difference]: Finished difference Result 7552 states and 8906 transitions. [2021-02-21 21:44:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-21 21:44:52,679 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 372 [2021-02-21 21:44:52,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:44:52,699 INFO L225 Difference]: With dead ends: 7552 [2021-02-21 21:44:52,699 INFO L226 Difference]: Without dead ends: 4398 [2021-02-21 21:44:52,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=663, Invalid=2093, Unknown=0, NotChecked=0, Total=2756 [2021-02-21 21:44:52,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2021-02-21 21:44:54,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 3841. [2021-02-21 21:44:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3841 states. [2021-02-21 21:44:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 4440 transitions. [2021-02-21 21:44:54,013 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 4440 transitions. Word has length 372 [2021-02-21 21:44:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:44:54,013 INFO L480 AbstractCegarLoop]: Abstraction has 3841 states and 4440 transitions. [2021-02-21 21:44:54,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-21 21:44:54,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 4440 transitions. [2021-02-21 21:44:54,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2021-02-21 21:44:54,017 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:44:54,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:44:54,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-21 21:44:54,018 INFO L428 AbstractCegarLoop]: === Iteration 20 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:44:54,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:44:54,018 INFO L82 PathProgramCache]: Analyzing trace with hash 880146998, now seen corresponding path program 1 times [2021-02-21 21:44:54,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:44:54,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802582437] [2021-02-21 21:44:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:44:54,021 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:44:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:44:54,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,292 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:44:54,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:44:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:44:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:44:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:44:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:44:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:44:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:44:54,417 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-21 21:44:54,418 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-21 21:44:54,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:44:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 21:44:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:44:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-02-21 21:44:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:44:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:44:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-02-21 21:44:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-21 21:44:54,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-21 21:44:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 21:44:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-21 21:44:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-21 21:44:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 21:44:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-21 21:44:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:44:54,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:44:54,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:44:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:44:54,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802582437] [2021-02-21 21:44:54,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:44:54,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 21:44:54,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408889148] [2021-02-21 21:44:54,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 21:44:54,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:44:54,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 21:44:54,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-02-21 21:44:54,766 INFO L87 Difference]: Start difference. First operand 3841 states and 4440 transitions. Second operand 14 states. [2021-02-21 21:44:55,604 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:44:57,668 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-21 21:44:59,249 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-21 21:45:08,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:45:08,001 INFO L93 Difference]: Finished difference Result 10378 states and 12179 transitions. [2021-02-21 21:45:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-21 21:45:08,007 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 379 [2021-02-21 21:45:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:45:08,046 INFO L225 Difference]: With dead ends: 10378 [2021-02-21 21:45:08,046 INFO L226 Difference]: Without dead ends: 7361 [2021-02-21 21:45:08,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=503, Invalid=1753, Unknown=0, NotChecked=0, Total=2256 [2021-02-21 21:45:08,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7361 states. [2021-02-21 21:45:10,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7361 to 6491. [2021-02-21 21:45:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6491 states. [2021-02-21 21:45:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6491 states to 6491 states and 7575 transitions. [2021-02-21 21:45:10,399 INFO L78 Accepts]: Start accepts. Automaton has 6491 states and 7575 transitions. Word has length 379 [2021-02-21 21:45:10,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:45:10,399 INFO L480 AbstractCegarLoop]: Abstraction has 6491 states and 7575 transitions. [2021-02-21 21:45:10,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 21:45:10,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6491 states and 7575 transitions. [2021-02-21 21:45:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-02-21 21:45:10,404 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:45:10,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:45:10,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-21 21:45:10,404 INFO L428 AbstractCegarLoop]: === Iteration 21 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:45:10,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:45:10,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1287855307, now seen corresponding path program 1 times [2021-02-21 21:45:10,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:45:10,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129907247] [2021-02-21 21:45:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:45:10,408 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:45:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:10,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:10,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:45:10,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:10,765 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:45:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:45:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:10,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:10,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:45:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:10,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:10,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:45:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:10,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:10,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:45:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:10,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:10,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:45:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:10,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:10,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:45:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:10,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:10,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:45:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:10,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 21:45:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:10,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:10,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:45:10,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 21:45:10,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:45:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:10,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:10,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:10,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:11,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-02-21 21:45:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:11,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:11,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:45:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:11,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:11,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:45:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:11,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:11,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-02-21 21:45:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:11,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:11,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:11,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:45:11,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 21:45:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-21 21:45:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:11,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 21:45:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:11,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:11,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-21 21:45:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:11,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:11,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-21 21:45:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:11,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:11,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 21:45:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:11,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:11,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-21 21:45:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:11,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:11,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:11,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:45:11,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129907247] [2021-02-21 21:45:11,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:45:11,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-21 21:45:11,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407030225] [2021-02-21 21:45:11,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-21 21:45:11,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:45:11,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-21 21:45:11,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:45:11,323 INFO L87 Difference]: Start difference. First operand 6491 states and 7575 transitions. Second operand 19 states. [2021-02-21 21:45:11,454 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:45:12,243 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-02-21 21:45:14,657 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-21 21:45:15,850 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-21 21:45:16,352 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-02-21 21:45:16,942 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-21 21:45:17,323 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-21 21:45:19,809 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-02-21 21:45:20,206 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-02-21 21:45:20,509 WARN L202 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-02-21 21:45:20,815 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-02-21 21:45:21,148 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-21 21:45:21,452 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-21 21:45:21,739 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2021-02-21 21:45:22,019 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-02-21 21:45:22,509 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-02-21 21:45:26,457 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-02-21 21:45:30,395 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-21 21:45:30,688 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2021-02-21 21:45:33,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:45:33,204 INFO L93 Difference]: Finished difference Result 12804 states and 15141 transitions. [2021-02-21 21:45:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-02-21 21:45:33,205 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 381 [2021-02-21 21:45:33,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:45:33,232 INFO L225 Difference]: With dead ends: 12804 [2021-02-21 21:45:33,233 INFO L226 Difference]: Without dead ends: 7354 [2021-02-21 21:45:33,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=926, Invalid=3496, Unknown=0, NotChecked=0, Total=4422 [2021-02-21 21:45:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2021-02-21 21:45:35,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 6411. [2021-02-21 21:45:35,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6411 states. [2021-02-21 21:45:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 7469 transitions. [2021-02-21 21:45:35,669 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 7469 transitions. Word has length 381 [2021-02-21 21:45:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:45:35,669 INFO L480 AbstractCegarLoop]: Abstraction has 6411 states and 7469 transitions. [2021-02-21 21:45:35,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-21 21:45:35,670 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 7469 transitions. [2021-02-21 21:45:35,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-02-21 21:45:35,673 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:45:35,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:45:35,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-21 21:45:35,674 INFO L428 AbstractCegarLoop]: === Iteration 22 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:45:35,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:45:35,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1690610776, now seen corresponding path program 1 times [2021-02-21 21:45:35,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:45:35,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885426569] [2021-02-21 21:45:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:45:35,678 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:45:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:35,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:35,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:35,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:35,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:45:35,763 WARN L141 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-02-21 21:45:35,764 WARN L147 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size 9 [2021-02-21 21:45:35,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:35,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:35,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:35,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:35,984 WARN L202 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:45:35,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:45:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:35,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:35,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:35,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:45:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:45:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:45:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:36,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:36,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:45:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:45:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:36,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 21:45:36,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:45:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:45:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 21:45:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:45:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-02-21 21:45:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:45:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:45:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-02-21 21:45:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-21 21:45:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 21:45:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-21 21:45:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-21 21:45:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 21:45:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-21 21:45:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:36,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:36,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:45:36,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885426569] [2021-02-21 21:45:36,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:45:36,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-21 21:45:36,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750974266] [2021-02-21 21:45:36,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-21 21:45:36,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:45:36,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-21 21:45:36,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:45:36,488 INFO L87 Difference]: Start difference. First operand 6411 states and 7469 transitions. Second operand 19 states. [2021-02-21 21:45:38,438 WARN L202 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 157 [2021-02-21 21:45:38,738 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2021-02-21 21:45:39,257 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-02-21 21:45:46,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:45:46,265 INFO L93 Difference]: Finished difference Result 12243 states and 14330 transitions. [2021-02-21 21:45:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-21 21:45:46,267 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 389 [2021-02-21 21:45:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:45:46,288 INFO L225 Difference]: With dead ends: 12243 [2021-02-21 21:45:46,289 INFO L226 Difference]: Without dead ends: 6451 [2021-02-21 21:45:46,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2021-02-21 21:45:46,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2021-02-21 21:45:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 6119. [2021-02-21 21:45:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6119 states. [2021-02-21 21:45:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 7132 transitions. [2021-02-21 21:45:48,974 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 7132 transitions. Word has length 389 [2021-02-21 21:45:48,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:45:48,975 INFO L480 AbstractCegarLoop]: Abstraction has 6119 states and 7132 transitions. [2021-02-21 21:45:48,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-21 21:45:48,975 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 7132 transitions. [2021-02-21 21:45:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-02-21 21:45:48,979 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:45:48,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:45:48,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-21 21:45:48,980 INFO L428 AbstractCegarLoop]: === Iteration 23 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:45:48,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:45:48,980 INFO L82 PathProgramCache]: Analyzing trace with hash -484686856, now seen corresponding path program 1 times [2021-02-21 21:45:48,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:45:48,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774983790] [2021-02-21 21:45:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:45:48,983 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:45:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:45:49,069 WARN L141 QuantifierPusher]: treesize reduction 26, result has 33.3 percent of original size [2021-02-21 21:45:49,070 WARN L147 QuantifierPusher]: treesize reduction 26, result has 33.3 percent of original size 13 [2021-02-21 21:45:49,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:49,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,311 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:45:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:45:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:45:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:45:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:45:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:49,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:49,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:45:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:45:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:45:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 21:45:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:45:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-02-21 21:45:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:49,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:45:49,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:45:49,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:45:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:45:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-02-21 21:45:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-21 21:45:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 21:45:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-21 21:45:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-21 21:45:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 21:45:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-21 21:45:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:45:49,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:45:49,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:45:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:45:49,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774983790] [2021-02-21 21:45:49,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:45:49,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-21 21:45:49,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064458943] [2021-02-21 21:45:49,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-21 21:45:49,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:45:49,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-21 21:45:49,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:45:49,831 INFO L87 Difference]: Start difference. First operand 6119 states and 7132 transitions. Second operand 19 states. [2021-02-21 21:45:49,962 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:45:51,771 WARN L202 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 157 [2021-02-21 21:45:52,062 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-02-21 21:45:52,591 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-02-21 21:45:55,165 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-02-21 21:45:55,354 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-21 21:45:56,445 WARN L202 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 156 [2021-02-21 21:45:57,740 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2021-02-21 21:45:59,307 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-02-21 21:45:59,441 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:45:59,653 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-21 21:46:03,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:03,054 INFO L93 Difference]: Finished difference Result 11614 states and 13583 transitions. [2021-02-21 21:46:03,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-21 21:46:03,055 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 389 [2021-02-21 21:46:03,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:03,081 INFO L225 Difference]: With dead ends: 11614 [2021-02-21 21:46:03,082 INFO L226 Difference]: Without dead ends: 6150 [2021-02-21 21:46:03,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=702, Invalid=2378, Unknown=0, NotChecked=0, Total=3080 [2021-02-21 21:46:03,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2021-02-21 21:46:05,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 6114. [2021-02-21 21:46:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6114 states. [2021-02-21 21:46:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 7122 transitions. [2021-02-21 21:46:05,744 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 7122 transitions. Word has length 389 [2021-02-21 21:46:05,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:05,744 INFO L480 AbstractCegarLoop]: Abstraction has 6114 states and 7122 transitions. [2021-02-21 21:46:05,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-21 21:46:05,744 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 7122 transitions. [2021-02-21 21:46:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-02-21 21:46:05,747 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:05,748 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:05,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-21 21:46:05,748 INFO L428 AbstractCegarLoop]: === Iteration 24 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:05,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:05,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1739823215, now seen corresponding path program 1 times [2021-02-21 21:46:05,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:05,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135615795] [2021-02-21 21:46:05,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:05,752 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:05,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:05,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:46:05,813 WARN L141 QuantifierPusher]: treesize reduction 6, result has 40.0 percent of original size [2021-02-21 21:46:05,814 WARN L147 QuantifierPusher]: treesize reduction 6, result has 40.0 percent of original size 4 [2021-02-21 21:46:05,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:05,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,057 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:46:06,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:46:06,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:46:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:46:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:46:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:46:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:46:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:46:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 21:46:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:46:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-02-21 21:46:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:46:06,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:46:06,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:46:06,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:46:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-21 21:46:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-02-21 21:46:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-21 21:46:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 21:46:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-21 21:46:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-21 21:46:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 21:46:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-21 21:46:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:06,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:06,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:06,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135615795] [2021-02-21 21:46:06,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:06,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 21:46:06,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096724328] [2021-02-21 21:46:06,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 21:46:06,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:06,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 21:46:06,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-02-21 21:46:06,614 INFO L87 Difference]: Start difference. First operand 6114 states and 7122 transitions. Second operand 16 states. [2021-02-21 21:46:06,735 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:46:07,003 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:46:07,721 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:46:08,609 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:46:10,735 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-02-21 21:46:10,879 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:46:11,048 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-21 21:46:11,237 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-21 21:46:11,397 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-21 21:46:14,346 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:46:17,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:17,347 INFO L93 Difference]: Finished difference Result 11638 states and 13618 transitions. [2021-02-21 21:46:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-21 21:46:17,348 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 389 [2021-02-21 21:46:17,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:17,367 INFO L225 Difference]: With dead ends: 11638 [2021-02-21 21:46:17,367 INFO L226 Difference]: Without dead ends: 6134 [2021-02-21 21:46:17,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=628, Invalid=1724, Unknown=0, NotChecked=0, Total=2352 [2021-02-21 21:46:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6134 states. [2021-02-21 21:46:19,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6134 to 6110. [2021-02-21 21:46:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6110 states. [2021-02-21 21:46:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 7108 transitions. [2021-02-21 21:46:19,846 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 7108 transitions. Word has length 389 [2021-02-21 21:46:19,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:19,846 INFO L480 AbstractCegarLoop]: Abstraction has 6110 states and 7108 transitions. [2021-02-21 21:46:19,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 21:46:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 7108 transitions. [2021-02-21 21:46:19,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-02-21 21:46:19,850 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:19,850 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:19,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-21 21:46:19,850 INFO L428 AbstractCegarLoop]: === Iteration 25 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:19,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1909142807, now seen corresponding path program 1 times [2021-02-21 21:46:19,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:19,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440785196] [2021-02-21 21:46:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:19,853 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:19,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:19,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:46:19,919 WARN L141 QuantifierPusher]: treesize reduction 6, result has 40.0 percent of original size [2021-02-21 21:46:19,920 WARN L147 QuantifierPusher]: treesize reduction 6, result has 40.0 percent of original size 4 [2021-02-21 21:46:19,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:19,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,151 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-02-21 21:46:20,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:46:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:46:20,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-02-21 21:46:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-02-21 21:46:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 21:46:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 21:46:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 21:46:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:46:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-02-21 21:46:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 21:46:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-02-21 21:46:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:46:20,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:46:20,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:46:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 21:46:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 21:46:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-02-21 21:46:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-21 21:46:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 21:46:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-21 21:46:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-21 21:46:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 21:46:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-21 21:46:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:46:20,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:46:20,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:46:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:46:20,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440785196] [2021-02-21 21:46:20,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:46:20,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 21:46:20,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912269111] [2021-02-21 21:46:20,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 21:46:20,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:46:20,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 21:46:20,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-02-21 21:46:20,631 INFO L87 Difference]: Start difference. First operand 6110 states and 7108 transitions. Second operand 16 states. [2021-02-21 21:46:20,763 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:46:20,920 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:46:21,740 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-02-21 21:46:22,639 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-02-21 21:46:24,698 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-21 21:46:24,845 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-21 21:46:24,990 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:46:25,155 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-21 21:46:25,330 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-21 21:46:25,493 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-21 21:46:25,640 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-21 21:46:28,179 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-21 21:46:28,319 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-21 21:46:31,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:46:31,425 INFO L93 Difference]: Finished difference Result 11563 states and 13516 transitions. [2021-02-21 21:46:31,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-21 21:46:31,426 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 390 [2021-02-21 21:46:31,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:46:31,448 INFO L225 Difference]: With dead ends: 11563 [2021-02-21 21:46:31,449 INFO L226 Difference]: Without dead ends: 6123 [2021-02-21 21:46:31,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=664, Invalid=1988, Unknown=0, NotChecked=0, Total=2652 [2021-02-21 21:46:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6123 states. [2021-02-21 21:46:33,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6123 to 6105. [2021-02-21 21:46:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6105 states. [2021-02-21 21:46:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 7098 transitions. [2021-02-21 21:46:33,976 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 7098 transitions. Word has length 390 [2021-02-21 21:46:33,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:46:33,976 INFO L480 AbstractCegarLoop]: Abstraction has 6105 states and 7098 transitions. [2021-02-21 21:46:33,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 21:46:33,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 7098 transitions. [2021-02-21 21:46:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-02-21 21:46:33,980 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:46:33,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:46:33,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-21 21:46:33,980 INFO L428 AbstractCegarLoop]: === Iteration 26 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:46:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:46:33,981 INFO L82 PathProgramCache]: Analyzing trace with hash 971096905, now seen corresponding path program 1 times [2021-02-21 21:46:33,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:46:33,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708406062] [2021-02-21 21:46:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:46:33,983 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:46:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:46:34,023 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:46:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:46:34,081 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:46:34,476 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:46:34,477 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:46:34,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-21 21:46:34,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:46:34 BoogieIcfgContainer [2021-02-21 21:46:34,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:46:34,519 INFO L168 Benchmark]: Toolchain (without parser) took 284429.69 ms. Allocated memory was 151.0 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 126.9 MB in the beginning and 731.8 MB in the end (delta: -604.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. [2021-02-21 21:46:34,520 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:46:34,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.87 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 108.6 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:46:34,520 INFO L168 Benchmark]: Boogie Preprocessor took 127.19 ms. Allocated memory is still 151.0 MB. Free memory was 108.6 MB in the beginning and 105.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:46:34,520 INFO L168 Benchmark]: RCFGBuilder took 1740.26 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 128.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 57.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:46:34,520 INFO L168 Benchmark]: TraceAbstraction took 281984.57 ms. Allocated memory was 151.0 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 127.9 MB in the beginning and 731.8 MB in the end (delta: -603.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. [2021-02-21 21:46:34,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 556.87 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 108.6 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 127.19 ms. Allocated memory is still 151.0 MB. Free memory was 108.6 MB in the beginning and 105.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1740.26 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 128.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 57.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 281984.57 ms. Allocated memory was 151.0 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 127.9 MB in the beginning and 731.8 MB in the end (delta: -603.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 619]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] msg_t nomsg = (msg_t )-1; [L25] port_t cs1 ; [L26] int8_t cs1_old ; [L27] int8_t cs1_new ; [L28] port_t cs2 ; [L29] int8_t cs2_old ; [L30] int8_t cs2_new ; [L31] port_t s1s2 ; [L32] int8_t s1s2_old ; [L33] int8_t s1s2_new ; [L34] port_t s1s1 ; [L35] int8_t s1s1_old ; [L36] int8_t s1s1_new ; [L37] port_t s2s1 ; [L38] int8_t s2s1_old ; [L39] int8_t s2s1_new ; [L40] port_t s2s2 ; [L41] int8_t s2s2_old ; [L42] int8_t s2s2_new ; [L43] port_t s1p ; [L44] int8_t s1p_old ; [L45] int8_t s1p_new ; [L46] port_t s2p ; [L47] int8_t s2p_old ; [L48] int8_t s2p_new ; [L51] _Bool side1Failed ; [L52] _Bool side2Failed ; [L53] msg_t side1_written ; [L54] msg_t side2_written ; [L60] static _Bool side1Failed_History_0 ; [L61] static _Bool side1Failed_History_1 ; [L62] static _Bool side1Failed_History_2 ; [L63] static _Bool side2Failed_History_0 ; [L64] static _Bool side2Failed_History_1 ; [L65] static _Bool side2Failed_History_2 ; [L66] static int8_t active_side_History_0 ; [L67] static int8_t active_side_History_1 ; [L68] static int8_t active_side_History_2 ; [L69] static msg_t manual_selection_History_0 ; [L70] static msg_t manual_selection_History_1 ; [L71] static msg_t manual_selection_History_2 ; [L542] int c1 ; [L543] int i2 ; [L546] c1 = 0 [L547] side1Failed = __VERIFIER_nondet_bool() [L548] side2Failed = __VERIFIER_nondet_bool() [L549] side1_written = __VERIFIER_nondet_char() [L550] side2_written = __VERIFIER_nondet_char() [L551] side1Failed_History_0 = __VERIFIER_nondet_bool() [L552] side1Failed_History_1 = __VERIFIER_nondet_bool() [L553] side1Failed_History_2 = __VERIFIER_nondet_bool() [L554] side2Failed_History_0 = __VERIFIER_nondet_bool() [L555] side2Failed_History_1 = __VERIFIER_nondet_bool() [L556] side2Failed_History_2 = __VERIFIER_nondet_bool() [L557] active_side_History_0 = __VERIFIER_nondet_char() [L558] active_side_History_1 = __VERIFIER_nondet_char() [L559] active_side_History_2 = __VERIFIER_nondet_char() [L560] manual_selection_History_0 = __VERIFIER_nondet_char() [L561] manual_selection_History_1 = __VERIFIER_nondet_char() [L562] manual_selection_History_2 = __VERIFIER_nondet_char() [L563] CALL, EXPR init() [L197] COND FALSE !((int )side1Failed_History_0 != 0) [L200] COND FALSE !((int )side2Failed_History_0 != 0) [L203] COND FALSE !((int )active_side_History_0 != -2) [L206] COND FALSE !((int )manual_selection_History_0 != 0) [L209] COND FALSE !((int )side1Failed_History_1 != 0) [L212] COND FALSE !((int )side2Failed_History_1 != 0) [L215] COND FALSE !((int )active_side_History_1 != -2) [L218] COND FALSE !((int )manual_selection_History_1 != 0) [L221] COND FALSE !((int )side1Failed_History_2 != 0) [L224] COND FALSE !((int )side2Failed_History_2 != 0) [L227] COND FALSE !((int )active_side_History_2 != -2) [L230] COND FALSE !((int )manual_selection_History_2 != 0) [L233] return (1); [L563] RET, EXPR init() [L563] i2 = init() [L564] CALL assume_abort_if_not(i2) [L58] COND FALSE !(!cond) [L564] RET assume_abort_if_not(i2) [L565] cs1_old = nomsg [L566] cs1_new = nomsg [L567] cs2_old = nomsg [L568] cs2_new = nomsg [L569] s1s2_old = nomsg [L570] s1s2_new = nomsg [L571] s1s1_old = nomsg [L572] s1s1_new = nomsg [L573] s2s1_old = nomsg [L574] s2s1_new = nomsg [L575] s2s2_old = nomsg [L576] s2s2_new = nomsg [L577] s1p_old = nomsg [L578] s1p_new = nomsg [L579] s2p_old = nomsg [L580] s2p_new = nomsg [L581] i2 = 0 [L582] COND TRUE i2 < 10 [L584] CALL Console_task_each_pals_period() [L251] msg_t manual_selection ; [L252] char tmp ; [L255] tmp = __VERIFIER_nondet_char() [L256] manual_selection = tmp [L257] CALL write_manual_selection_history(manual_selection) [L167] manual_selection_History_2 = manual_selection_History_1 [L168] manual_selection_History_1 = manual_selection_History_0 [L169] manual_selection_History_0 = val [L257] RET write_manual_selection_history(manual_selection) [L258] EXPR manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L258] cs1_new = manual_selection != nomsg && cs1_new == nomsg ? manual_selection : cs1_new [L259] EXPR manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L259] cs2_new = manual_selection != nomsg && cs2_new == nomsg ? manual_selection : cs2_new [L260] manual_selection = (msg_t )0 [L584] RET Console_task_each_pals_period() [L585] CALL Side1_activestandby_task_each_pals_period() [L266] int8_t side1 ; [L267] int8_t side2 ; [L268] msg_t manual_selection ; [L269] int8_t next_state ; [L272] side1 = nomsg [L273] side2 = nomsg [L274] manual_selection = (msg_t )0 [L275] side1Failed = __VERIFIER_nondet_bool() [L276] CALL write_side1_failed_history(side1Failed) [L77] side1Failed_History_2 = side1Failed_History_1 [L78] side1Failed_History_1 = side1Failed_History_0 [L79] side1Failed_History_0 = val [L276] RET write_side1_failed_history(side1Failed) [L277] COND FALSE !(\read(side1Failed)) [L284] side1 = s1s1_old [L285] s1s1_old = nomsg [L286] side2 = s2s1_old [L287] s2s1_old = nomsg [L288] manual_selection = cs1_old [L289] cs1_old = nomsg [L290] COND TRUE (int )side1 == (int )side2 [L291] next_state = (int8_t )1 [L314] EXPR next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new [L314] s1s1_new = next_state != nomsg && s1s1_new == nomsg ? next_state : s1s1_new [L315] EXPR next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new [L315] s1s2_new = next_state != nomsg && s1s2_new == nomsg ? next_state : s1s2_new [L316] EXPR next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new [L316] s1p_new = next_state != nomsg && s1p_new == nomsg ? next_state : s1p_new [L317] side1_written = next_state [L585] RET Side1_activestandby_task_each_pals_period() [L586] CALL Side2_activestandby_task_each_pals_period() [L323] int8_t side1 ; [L324] int8_t side2 ; [L325] msg_t manual_selection ; [L326] int8_t next_state ; [L329] side1 = nomsg [L330] side2 = nomsg [L331] manual_selection = (msg_t )0 [L332] side2Failed = __VERIFIER_nondet_bool() [L333] CALL write_side2_failed_history(side2Failed) [L107] side2Failed_History_2 = side2Failed_History_1 [L108] side2Failed_History_1 = side2Failed_History_0 [L109] side2Failed_History_0 = val [L333] RET write_side2_failed_history(side2Failed) [L334] COND FALSE !(\read(side2Failed)) [L341] side1 = s1s2_old [L342] s1s2_old = nomsg [L343] side2 = s2s2_old [L344] s2s2_old = nomsg [L345] manual_selection = cs2_old [L346] cs2_old = nomsg [L347] COND TRUE (int )side1 == (int )side2 [L348] next_state = (int8_t )1 [L371] EXPR next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L371] s2s1_new = next_state != nomsg && s2s1_new == nomsg ? next_state : s2s1_new [L372] EXPR next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L372] s2s2_new = next_state != nomsg && s2s2_new == nomsg ? next_state : s2s2_new [L373] EXPR next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L373] s2p_new = next_state != nomsg && s2p_new == nomsg ? next_state : s2p_new [L374] side2_written = next_state [L586] RET Side2_activestandby_task_each_pals_period() [L587] CALL Pendulum_prism_task_each_pals_period() [L380] int8_t active_side ; [L381] int8_t tmp ; [L382] int8_t side1 ; [L383] int8_t side2 ; [L386] CALL, EXPR read_active_side_history((unsigned char)0) [L148] COND TRUE (int )index == 0 [L149] return (active_side_History_0); [L386] RET, EXPR read_active_side_history((unsigned char)0) [L386] tmp = read_active_side_history((unsigned char)0) [L387] active_side = tmp [L388] side1 = nomsg [L389] side2 = nomsg [L390] side1 = s1p_old [L391] s1p_old = nomsg [L392] side2 = s2p_old [L393] s2p_old = nomsg [L394] COND FALSE !((int )side1 == 1) [L397] COND FALSE !((int )side2 == 1) [L400] COND FALSE !((int )side1 == 0) [L408] COND TRUE (int )side1 == (int )nomsg [L409] COND FALSE !((int )side2 == 0) [L412] active_side = (int8_t )0 [L417] CALL write_active_side_history(active_side) [L137] active_side_History_2 = active_side_History_1 [L138] active_side_History_1 = active_side_History_0 [L139] active_side_History_0 = val [L417] RET write_active_side_history(active_side) [L587] RET Pendulum_prism_task_each_pals_period() [L588] cs1_old = cs1_new [L589] cs1_new = nomsg [L590] cs2_old = cs2_new [L591] cs2_new = nomsg [L592] s1s2_old = s1s2_new [L593] s1s2_new = nomsg [L594] s1s1_old = s1s1_new [L595] s1s1_new = nomsg [L596] s2s1_old = s2s1_new [L597] s2s1_new = nomsg [L598] s2s2_old = s2s2_new [L599] s2s2_new = nomsg [L600] s1p_old = s1p_new [L601] s1p_new = nomsg [L602] s2p_old = s2p_new [L603] s2p_new = nomsg [L604] CALL, EXPR check() [L423] int tmp ; [L424] msg_t tmp___0 ; [L425] _Bool tmp___1 ; [L426] _Bool tmp___2 ; [L427] _Bool tmp___3 ; [L428] _Bool tmp___4 ; [L429] int8_t tmp___5 ; [L430] _Bool tmp___6 ; [L431] _Bool tmp___7 ; [L432] _Bool tmp___8 ; [L433] int8_t tmp___9 ; [L434] _Bool tmp___10 ; [L435] _Bool tmp___11 ; [L436] _Bool tmp___12 ; [L437] msg_t tmp___13 ; [L438] _Bool tmp___14 ; [L439] _Bool tmp___15 ; [L440] _Bool tmp___16 ; [L441] _Bool tmp___17 ; [L442] int8_t tmp___18 ; [L443] int8_t tmp___19 ; [L444] int8_t tmp___20 ; [L447] COND TRUE ! side1Failed [L448] tmp = 1 [L455] CALL assume_abort_if_not((_Bool )tmp) [L58] COND FALSE !(!cond) [L455] RET assume_abort_if_not((_Bool )tmp) [L456] CALL, EXPR read_manual_selection_history((unsigned char)1) [L178] COND FALSE !((int )index == 0) [L181] COND TRUE (int )index == 1 [L182] return (manual_selection_History_1); [L456] RET, EXPR read_manual_selection_history((unsigned char)1) [L456] tmp___0 = read_manual_selection_history((unsigned char)1) [L457] COND TRUE ! tmp___0 [L458] CALL, EXPR read_side1_failed_history((unsigned char)1) [L88] COND FALSE !((int )index == 0) [L91] COND TRUE (int )index == 1 [L92] return (side1Failed_History_1); [L458] RET, EXPR read_side1_failed_history((unsigned char)1) [L458] tmp___1 = read_side1_failed_history((unsigned char)1) [L459] COND TRUE ! tmp___1 [L460] CALL, EXPR read_side1_failed_history((unsigned char)0) [L88] COND TRUE (int )index == 0 [L89] return (side1Failed_History_0); [L460] RET, EXPR read_side1_failed_history((unsigned char)0) [L460] tmp___2 = read_side1_failed_history((unsigned char)0) [L461] COND TRUE ! tmp___2 [L462] CALL, EXPR read_side2_failed_history((unsigned char)1) [L118] COND FALSE !((int )index == 0) [L121] COND TRUE (int )index == 1 [L122] return (side2Failed_History_1); [L462] RET, EXPR read_side2_failed_history((unsigned char)1) [L462] tmp___3 = read_side2_failed_history((unsigned char)1) [L463] COND TRUE ! tmp___3 [L464] CALL, EXPR read_side2_failed_history((unsigned char)0) [L118] COND TRUE (int )index == 0 [L119] return (side2Failed_History_0); [L464] RET, EXPR read_side2_failed_history((unsigned char)0) [L464] tmp___4 = read_side2_failed_history((unsigned char)0) [L465] COND TRUE ! tmp___4 [L466] COND FALSE !(! ((int )side1_written == 1)) [L471] COND FALSE !(! (! ((int )side1_written == 0))) [L476] COND TRUE ! (! ((int )side1_written == 1)) [L477] COND TRUE ! ((int )side2_written == 0) [L478] return (0); [L604] RET, EXPR check() [L604] c1 = check() [L605] CALL assert(c1) [L617] COND TRUE ! arg [L619] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 585 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 281.8s, OverallIterations: 26, TraceHistogramMax: 2, AutomataDifference: 234.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16426 SDtfs, 83944 SDslu, 26868 SDs, 0 SdLazy, 75314 SolverSat, 14737 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1883 GetRequests, 814 SyntacticMatches, 18 SemanticMatches, 1051 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10999 ImplicationChecksByTransitivity, 87.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6491occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 26.3s AutomataMinimizationTime, 25 MinimizatonAttempts, 5820 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...