/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/systemc/pc_sfifo_3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 19:06:23,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 19:06:23,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 19:06:23,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 19:06:23,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 19:06:23,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 19:06:23,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 19:06:23,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 19:06:23,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 19:06:23,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 19:06:23,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 19:06:23,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 19:06:23,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 19:06:23,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 19:06:23,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 19:06:23,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 19:06:23,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 19:06:23,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 19:06:23,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 19:06:23,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 19:06:23,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 19:06:23,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 19:06:23,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 19:06:23,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 19:06:23,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 19:06:23,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 19:06:23,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 19:06:23,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 19:06:23,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 19:06:23,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 19:06:23,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 19:06:23,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 19:06:23,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 19:06:23,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 19:06:23,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 19:06:23,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 19:06:23,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 19:06:23,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 19:06:23,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 19:06:23,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 19:06:23,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 19:06:23,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 19:06:23,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 19:06:23,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 19:06:23,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 19:06:23,536 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 19:06:23,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 19:06:23,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 19:06:23,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 19:06:23,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 19:06:23,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 19:06:23,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 19:06:23,538 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 19:06:23,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 19:06:23,539 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 19:06:23,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 19:06:23,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 19:06:23,539 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 19:06:23,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 19:06:23,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 19:06:23,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:06:23,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 19:06:23,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 19:06:23,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 19:06:23,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 19:06:23,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 19:06:24,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 19:06:24,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 19:06:24,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 19:06:24,015 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 19:06:24,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2021-02-23 19:06:24,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc6b10078/9239de56ab6e45baab0e1f00c0114996/FLAGfe6c666fd [2021-02-23 19:06:24,804 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 19:06:24,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2021-02-23 19:06:24,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc6b10078/9239de56ab6e45baab0e1f00c0114996/FLAGfe6c666fd [2021-02-23 19:06:25,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc6b10078/9239de56ab6e45baab0e1f00c0114996 [2021-02-23 19:06:25,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 19:06:25,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 19:06:25,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 19:06:25,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 19:06:25,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 19:06:25,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:06:25" (1/1) ... [2021-02-23 19:06:25,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdccdc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:06:25, skipping insertion in model container [2021-02-23 19:06:25,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:06:25" (1/1) ... [2021-02-23 19:06:25,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 19:06:25,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 19:06:25,379 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c[335,348] [2021-02-23 19:06:25,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:06:25,453 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 19:06:25,467 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c[335,348] [2021-02-23 19:06:25,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:06:25,530 INFO L208 MainTranslator]: Completed translation [2021-02-23 19:06:25,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:06:25 WrapperNode [2021-02-23 19:06:25,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 19:06:25,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 19:06:25,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 19:06:25,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 19:06:25,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:06:25" (1/1) ... [2021-02-23 19:06:25,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:06:25" (1/1) ... [2021-02-23 19:06:25,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:06:25" (1/1) ... [2021-02-23 19:06:25,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:06:25" (1/1) ... [2021-02-23 19:06:25,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:06:25" (1/1) ... [2021-02-23 19:06:25,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:06:25" (1/1) ... [2021-02-23 19:06:25,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:06:25" (1/1) ... [2021-02-23 19:06:25,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 19:06:25,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 19:06:25,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 19:06:25,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 19:06:25,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:06:25" (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 [2021-02-23 19:06:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 19:06:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 19:06:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 19:06:25,759 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-02-23 19:06:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2021-02-23 19:06:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-02-23 19:06:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-02-23 19:06:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-02-23 19:06:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2021-02-23 19:06:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2021-02-23 19:06:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-02-23 19:06:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2021-02-23 19:06:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-02-23 19:06:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-02-23 19:06:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-02-23 19:06:25,762 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2021-02-23 19:06:25,762 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2021-02-23 19:06:25,762 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-02-23 19:06:25,762 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2021-02-23 19:06:25,762 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2021-02-23 19:06:25,763 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2021-02-23 19:06:25,763 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2021-02-23 19:06:25,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 19:06:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 19:06:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 19:06:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 19:06:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 19:06:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 19:06:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-02-23 19:06:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2021-02-23 19:06:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-02-23 19:06:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-02-23 19:06:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-02-23 19:06:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2021-02-23 19:06:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2021-02-23 19:06:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-02-23 19:06:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2021-02-23 19:06:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-02-23 19:06:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-02-23 19:06:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-02-23 19:06:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2021-02-23 19:06:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2021-02-23 19:06:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-02-23 19:06:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2021-02-23 19:06:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2021-02-23 19:06:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2021-02-23 19:06:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2021-02-23 19:06:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 19:06:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 19:06:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 19:06:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 19:06:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 19:06:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 19:06:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 19:06:26,544 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L213: ~a_t~0 := ~a~0; [2021-02-23 19:06:26,545 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L211: ~c_dr_st~0 := 2; [2021-02-23 19:06:26,545 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume 1 == ~q_free~0; [2021-02-23 19:06:26,545 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !(1 == ~q_free~0); [2021-02-23 19:06:26,546 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L212: ~c_dr_pc~0 := 2; [2021-02-23 19:06:26,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 19:06:26,603 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 19:06:26,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:06:26 BoogieIcfgContainer [2021-02-23 19:06:26,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 19:06:26,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 19:06:26,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 19:06:26,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 19:06:26,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:06:25" (1/3) ... [2021-02-23 19:06:26,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632ce8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:06:26, skipping insertion in model container [2021-02-23 19:06:26,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:06:25" (2/3) ... [2021-02-23 19:06:26,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632ce8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:06:26, skipping insertion in model container [2021-02-23 19:06:26,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:06:26" (3/3) ... [2021-02-23 19:06:26,622 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2021-02-23 19:06:26,629 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 19:06:26,638 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 19:06:26,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 19:06:26,697 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 19:06:26,698 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 19:06:26,698 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 19:06:26,699 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 19:06:26,699 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 19:06:26,700 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 19:06:26,700 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 19:06:26,701 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 19:06:26,738 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states. [2021-02-23 19:06:26,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-02-23 19:06:26,774 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:06:26,776 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] [2021-02-23 19:06:26,776 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:06:26,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:06:26,789 INFO L82 PathProgramCache]: Analyzing trace with hash -690017505, now seen corresponding path program 1 times [2021-02-23 19:06:26,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:06:26,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252722405] [2021-02-23 19:06:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:06:26,892 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:06:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:27,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:27,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:27,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:27,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:27,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:06:27,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:27,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:06:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:27,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:27,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-23 19:06:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:27,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:27,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-23 19:06:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:27,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 19:06:27,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-23 19:06:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:27,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:27,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-23 19:06:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:27,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:27,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-23 19:06:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:27,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:27,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:06:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 19:06:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:27,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:27,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:06:27,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 19:06:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:27,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:27,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-23 19:06:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:27,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:27,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 19:06:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:27,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:27,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:06:27,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252722405] [2021-02-23 19:06:27,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:06:27,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 19:06:27,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035914459] [2021-02-23 19:06:27,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 19:06:27,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:06:27,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 19:06:27,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-02-23 19:06:27,906 INFO L87 Difference]: Start difference. First operand 273 states. Second operand 13 states. [2021-02-23 19:06:28,399 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2021-02-23 19:06:29,899 WARN L202 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2021-02-23 19:06:30,929 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 19:06:31,913 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2021-02-23 19:06:33,302 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 19:06:35,389 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 19:06:36,355 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-23 19:06:43,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:06:43,449 INFO L93 Difference]: Finished difference Result 2150 states and 3109 transitions. [2021-02-23 19:06:43,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-02-23 19:06:43,451 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 140 [2021-02-23 19:06:43,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:06:43,530 INFO L225 Difference]: With dead ends: 2150 [2021-02-23 19:06:43,531 INFO L226 Difference]: Without dead ends: 1875 [2021-02-23 19:06:43,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3585 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1275, Invalid=8037, Unknown=0, NotChecked=0, Total=9312 [2021-02-23 19:06:43,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2021-02-23 19:06:43,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1315. [2021-02-23 19:06:43,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2021-02-23 19:06:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1603 transitions. [2021-02-23 19:06:44,014 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1603 transitions. Word has length 140 [2021-02-23 19:06:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:06:44,017 INFO L480 AbstractCegarLoop]: Abstraction has 1315 states and 1603 transitions. [2021-02-23 19:06:44,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 19:06:44,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1603 transitions. [2021-02-23 19:06:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-02-23 19:06:44,032 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:06:44,033 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] [2021-02-23 19:06:44,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 19:06:44,034 INFO L428 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:06:44,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:06:44,035 INFO L82 PathProgramCache]: Analyzing trace with hash 965313352, now seen corresponding path program 1 times [2021-02-23 19:06:44,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:06:44,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240066241] [2021-02-23 19:06:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:06:44,050 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:06:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:44,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:44,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:44,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:44,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:44,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:44,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:06:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:44,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-23 19:06:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:44,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:44,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-23 19:06:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:44,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-23 19:06:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:44,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:44,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-23 19:06:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:44,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:44,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-23 19:06:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:44,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:44,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 19:06:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:44,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:44,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 19:06:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:44,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:44,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-23 19:06:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:44,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:44,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 19:06:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:44,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:44,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:44,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:06:44,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240066241] [2021-02-23 19:06:44,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:06:44,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 19:06:44,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830079113] [2021-02-23 19:06:44,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 19:06:44,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:06:44,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 19:06:44,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 19:06:44,489 INFO L87 Difference]: Start difference. First operand 1315 states and 1603 transitions. Second operand 9 states. [2021-02-23 19:06:50,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:06:50,304 INFO L93 Difference]: Finished difference Result 5283 states and 8021 transitions. [2021-02-23 19:06:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 19:06:50,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2021-02-23 19:06:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:06:50,387 INFO L225 Difference]: With dead ends: 5283 [2021-02-23 19:06:50,388 INFO L226 Difference]: Without dead ends: 4033 [2021-02-23 19:06:50,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2021-02-23 19:06:50,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2021-02-23 19:06:51,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 2555. [2021-02-23 19:06:51,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2555 states. [2021-02-23 19:06:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2555 states to 2555 states and 3236 transitions. [2021-02-23 19:06:51,066 INFO L78 Accepts]: Start accepts. Automaton has 2555 states and 3236 transitions. Word has length 140 [2021-02-23 19:06:51,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:06:51,067 INFO L480 AbstractCegarLoop]: Abstraction has 2555 states and 3236 transitions. [2021-02-23 19:06:51,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 19:06:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2555 states and 3236 transitions. [2021-02-23 19:06:51,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-02-23 19:06:51,071 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:06:51,071 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] [2021-02-23 19:06:51,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 19:06:51,072 INFO L428 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:06:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:06:51,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1732617692, now seen corresponding path program 1 times [2021-02-23 19:06:51,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:06:51,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333588503] [2021-02-23 19:06:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:06:51,076 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:06:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:51,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:51,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:51,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:06:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:51,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-23 19:06:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:51,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:51,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:06:51,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-23 19:06:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:51,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:51,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-23 19:06:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:51,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 19:06:51,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-23 19:06:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:51,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:51,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-23 19:06:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:51,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:51,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 19:06:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:51,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:51,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 19:06:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:51,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:51,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-23 19:06:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:51,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:51,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 19:06:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:51,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:51,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:06:51,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333588503] [2021-02-23 19:06:51,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:06:51,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 19:06:51,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356172678] [2021-02-23 19:06:51,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 19:06:51,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:06:51,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 19:06:51,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-23 19:06:51,407 INFO L87 Difference]: Start difference. First operand 2555 states and 3236 transitions. Second operand 9 states. [2021-02-23 19:06:51,858 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 19:06:54,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:06:54,650 INFO L93 Difference]: Finished difference Result 5653 states and 7647 transitions. [2021-02-23 19:06:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 19:06:54,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2021-02-23 19:06:54,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:06:54,679 INFO L225 Difference]: With dead ends: 5653 [2021-02-23 19:06:54,679 INFO L226 Difference]: Without dead ends: 3161 [2021-02-23 19:06:54,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-02-23 19:06:54,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2021-02-23 19:06:55,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2213. [2021-02-23 19:06:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2213 states. [2021-02-23 19:06:55,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 2789 transitions. [2021-02-23 19:06:55,265 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 2789 transitions. Word has length 141 [2021-02-23 19:06:55,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:06:55,266 INFO L480 AbstractCegarLoop]: Abstraction has 2213 states and 2789 transitions. [2021-02-23 19:06:55,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 19:06:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 2789 transitions. [2021-02-23 19:06:55,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-02-23 19:06:55,269 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:06:55,269 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] [2021-02-23 19:06:55,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 19:06:55,270 INFO L428 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:06:55,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:06:55,271 INFO L82 PathProgramCache]: Analyzing trace with hash -619892627, now seen corresponding path program 1 times [2021-02-23 19:06:55,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:06:55,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300008210] [2021-02-23 19:06:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:06:55,275 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:06:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:55,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:55,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:55,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:55,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:55,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:06:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:55,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-23 19:06:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:55,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:06:55,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-23 19:06:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:55,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-23 19:06:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:55,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-23 19:06:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:55,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-23 19:06:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:55,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 19:06:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:55,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 19:06:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:55,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-23 19:06:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:55,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-23 19:06:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:06:55,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:06:55,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:06:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:06:55,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300008210] [2021-02-23 19:06:55,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:06:55,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 19:06:55,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394228033] [2021-02-23 19:06:55,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 19:06:55,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:06:55,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 19:06:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 19:06:55,595 INFO L87 Difference]: Start difference. First operand 2213 states and 2789 transitions. Second operand 8 states. [2021-02-23 19:06:55,859 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 19:06:59,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:06:59,964 INFO L93 Difference]: Finished difference Result 7536 states and 11029 transitions. [2021-02-23 19:06:59,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 19:06:59,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 144 [2021-02-23 19:06:59,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:07:00,010 INFO L225 Difference]: With dead ends: 7536 [2021-02-23 19:07:00,011 INFO L226 Difference]: Without dead ends: 5386 [2021-02-23 19:07:00,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2021-02-23 19:07:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2021-02-23 19:07:01,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 3992. [2021-02-23 19:07:01,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3992 states. [2021-02-23 19:07:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5139 transitions. [2021-02-23 19:07:01,041 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5139 transitions. Word has length 144 [2021-02-23 19:07:01,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:07:01,042 INFO L480 AbstractCegarLoop]: Abstraction has 3992 states and 5139 transitions. [2021-02-23 19:07:01,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 19:07:01,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5139 transitions. [2021-02-23 19:07:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 19:07:01,046 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:07:01,059 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-23 19:07:01,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 19:07:01,060 INFO L428 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:07:01,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:07:01,060 INFO L82 PathProgramCache]: Analyzing trace with hash -520132439, now seen corresponding path program 1 times [2021-02-23 19:07:01,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:07:01,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831113245] [2021-02-23 19:07:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:07:01,236 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 1 [2021-02-23 19:07:01,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:01,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:01,465 WARN L141 QuantifierPusher]: treesize reduction 24, result has 92.6 percent of original size [2021-02-23 19:07:01,497 WARN L147 QuantifierPusher]: treesize reduction 24, result has 92.6 percent of original size 299 [2021-02-23 19:07:01,644 WARN L141 QuantifierPusher]: treesize reduction 152, result has 51.1 percent of original size [2021-02-23 19:07:01,650 WARN L147 QuantifierPusher]: treesize reduction 152, result has 51.1 percent of original size 159 [2021-02-23 19:07:01,652 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 19:07:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:07:01,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:01,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:01,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:01,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:01,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:01,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:01,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:01,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:07:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:07:01,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:01,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:01,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:01,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-23 19:07:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:07:01,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:01,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-23 19:07:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:07:01,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:01,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-23 19:07:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:07:01,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:01,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:02,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-23 19:07:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:07:02,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:02,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-23 19:07:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:07:02,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:02,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 19:07:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:07:02,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:02,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 19:07:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:07:02,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:02,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-23 19:07:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:07:02,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-02-23 19:07:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:07:02,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:07:02,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:02,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:02,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 19:07:02,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 19:07:02,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 19:07:02,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:07:02,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 19:07:02,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:07:02,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 19:07:02,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 19:07:02,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 19:07:02,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 19:07:02,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 19:07:02,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 19:07:02,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 19:07:02,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:07:02,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 19:07:02,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:07:02,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 19:07:02,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 19:07:02,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-02-23 19:07:02,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:02,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:02,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:02,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:07:02,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:07:02,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 19:07:02,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 19:07:02,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 19:07:02,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 19:07:02,214 WARN L141 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-02-23 19:07:02,214 WARN L147 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size 10 [2021-02-23 19:07:02,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 19:07:02,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 19:07:02,264 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-23 19:07:02,264 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-23 19:07:02,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 19:07:02,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 19:07:02,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 19:07:02,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 19:07:02,362 WARN L141 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-02-23 19:07:02,364 WARN L147 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size 13 [2021-02-23 19:07:02,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 19:07:02,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 19:07:02,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 19:07:02,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 19:07:02,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 19:07:02,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 19:07:02,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 19:07:02,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 19:07:02,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-02-23 19:07:02,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 19:07:02,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 19:07:02,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 19:07:02,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 19:07:02,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-23 19:07:02,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-23 19:07:02,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 19:07:02,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 19:07:02,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 19:07:02,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:02,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 19:07:02,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-23 19:07:03,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:03,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:03,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831113245] [2021-02-23 19:07:03,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:07:03,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-02-23 19:07:03,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790638660] [2021-02-23 19:07:03,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-23 19:07:03,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:07:03,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-23 19:07:03,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 19:07:03,009 INFO L87 Difference]: Start difference. First operand 3992 states and 5139 transitions. Second operand 32 states. [2021-02-23 19:07:04,332 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 19:07:04,458 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 19:07:04,860 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 19:07:05,046 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-23 19:07:05,214 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-23 19:07:05,378 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-23 19:07:05,550 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 19:07:05,790 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-23 19:07:06,085 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-23 19:07:06,293 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-23 19:07:06,493 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-23 19:07:06,698 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-23 19:07:07,051 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-23 19:07:07,284 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-02-23 19:07:08,094 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-23 19:07:08,271 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-02-23 19:07:10,382 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 19:07:10,521 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 19:07:10,653 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 19:07:10,992 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-02-23 19:07:11,287 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-23 19:07:13,313 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-23 19:07:13,595 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 19:07:13,899 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-23 19:07:15,486 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-23 19:07:16,409 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-23 19:07:16,617 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-23 19:07:16,832 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-23 19:07:17,036 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-02-23 19:07:17,204 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-23 19:07:19,620 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-23 19:07:19,976 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-23 19:07:20,104 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 19:07:20,862 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-02-23 19:07:21,433 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 19:07:21,843 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 19:07:22,053 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 19:07:22,229 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 19:07:25,325 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 110 [2021-02-23 19:07:25,645 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2021-02-23 19:07:25,904 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-02-23 19:07:26,074 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-23 19:07:29,564 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 19:07:29,703 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 19:07:29,839 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 19:07:29,990 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 19:07:30,140 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-23 19:07:30,292 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 19:07:30,442 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 19:07:30,607 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-23 19:07:30,786 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-23 19:07:30,965 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-23 19:07:31,149 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-23 19:07:31,339 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-23 19:07:32,105 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-23 19:07:32,259 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-23 19:07:32,401 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-23 19:07:32,568 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-02-23 19:07:32,748 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-23 19:07:32,995 WARN L202 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-02-23 19:07:33,175 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-23 19:07:33,369 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 19:07:33,579 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-23 19:07:33,800 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-23 19:07:34,012 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-23 19:07:34,239 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-23 19:07:36,499 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2021-02-23 19:07:36,872 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2021-02-23 19:07:37,196 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-23 19:07:37,410 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-23 19:07:38,590 WARN L202 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2021-02-23 19:07:39,013 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2021-02-23 19:07:39,386 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-23 19:07:39,663 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-02-23 19:07:42,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:07:42,694 INFO L93 Difference]: Finished difference Result 17079 states and 23945 transitions. [2021-02-23 19:07:42,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 318 states. [2021-02-23 19:07:42,694 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 176 [2021-02-23 19:07:42,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:07:42,789 INFO L225 Difference]: With dead ends: 17079 [2021-02-23 19:07:42,790 INFO L226 Difference]: Without dead ends: 13151 [2021-02-23 19:07:42,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52430 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=12705, Invalid=106665, Unknown=0, NotChecked=0, Total=119370 [2021-02-23 19:07:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13151 states. [2021-02-23 19:07:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13151 to 8026. [2021-02-23 19:07:45,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8026 states. [2021-02-23 19:07:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8026 states to 8026 states and 10241 transitions. [2021-02-23 19:07:45,429 INFO L78 Accepts]: Start accepts. Automaton has 8026 states and 10241 transitions. Word has length 176 [2021-02-23 19:07:45,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:07:45,430 INFO L480 AbstractCegarLoop]: Abstraction has 8026 states and 10241 transitions. [2021-02-23 19:07:45,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-02-23 19:07:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 8026 states and 10241 transitions. [2021-02-23 19:07:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 19:07:45,434 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:07:45,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2021-02-23 19:07:45,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 19:07:45,435 INFO L428 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:07:45,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:07:45,435 INFO L82 PathProgramCache]: Analyzing trace with hash 910518990, now seen corresponding path program 1 times [2021-02-23 19:07:45,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:07:45,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056016434] [2021-02-23 19:07:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:07:45,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:45,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:45,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:45,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:45,661 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.5 percent of original size [2021-02-23 19:07:45,665 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.5 percent of original size 208 [2021-02-23 19:07:45,799 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.7 percent of original size [2021-02-23 19:07:45,804 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.7 percent of original size 214 [2021-02-23 19:07:45,930 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.7 percent of original size [2021-02-23 19:07:45,934 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.7 percent of original size 214 [2021-02-23 19:07:45,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:45,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:45,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:07:45,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:07:46,089 WARN L141 QuantifierPusher]: treesize reduction 201, result has 52.3 percent of original size [2021-02-23 19:07:46,093 WARN L147 QuantifierPusher]: treesize reduction 201, result has 52.3 percent of original size 220 [2021-02-23 19:07:46,094 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 19:07:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:07:46,138 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:07:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:07:46,183 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:07:46,299 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 19:07:46,299 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 19:07:46,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 19:07:46,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:07:46 BoogieIcfgContainer [2021-02-23 19:07:46,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 19:07:46,332 INFO L168 Benchmark]: Toolchain (without parser) took 81247.26 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 126.7 MB in the beginning and 507.0 MB in the end (delta: -380.3 MB). Peak memory consumption was 759.3 MB. Max. memory is 8.0 GB. [2021-02-23 19:07:46,333 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 19:07:46,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.28 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 112.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 19:07:46,333 INFO L168 Benchmark]: Boogie Preprocessor took 94.85 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 109.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 19:07:46,334 INFO L168 Benchmark]: RCFGBuilder took 980.76 ms. Allocated memory is still 151.0 MB. Free memory was 109.9 MB in the beginning and 108.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 8.0 GB. [2021-02-23 19:07:46,334 INFO L168 Benchmark]: TraceAbstraction took 79720.78 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 107.9 MB in the beginning and 507.0 MB in the end (delta: -399.1 MB). Peak memory consumption was 740.2 MB. Max. memory is 8.0 GB. [2021-02-23 19:07:46,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 424.28 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 112.1 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.85 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 109.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 980.76 ms. Allocated memory is still 151.0 MB. Free memory was 109.9 MB in the beginning and 108.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 79720.78 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 107.9 MB in the beginning and 507.0 MB in the end (delta: -399.1 MB). Peak memory consumption was 740.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int fast_clk_edge ; [L17] int slow_clk_edge ; [L18] int q_buf_0 ; [L19] int q_free ; [L20] int q_read_ev ; [L21] int q_write_ev ; [L22] int q_req_up ; [L23] int q_ev ; [L44] int p_num_write ; [L45] int p_last_write ; [L46] int p_dw_st ; [L47] int p_dw_pc ; [L48] int p_dw_i ; [L49] int c_num_read ; [L50] int c_last_read ; [L51] int c_dr_st ; [L52] int c_dr_pc ; [L53] int c_dr_i ; [L186] static int a_t ; [L336] static int t = 0; [L547] int __retres1 ; [L551] CALL init_model() [L531] fast_clk_edge = 2 [L532] slow_clk_edge = 2 [L533] q_free = 1 [L534] q_write_ev = 2 [L535] q_read_ev = q_write_ev [L536] p_num_write = 0 [L537] p_dw_pc = 0 [L538] p_dw_i = 1 [L539] c_num_read = 0 [L540] c_dr_pc = 0 [L541] c_dr_i = 1 [L551] RET init_model() [L552] CALL start_simulation() [L469] int kernel_st ; [L470] int tmp ; [L471] int tmp___0 ; [L475] kernel_st = 0 [L476] CALL update_channels() [L250] COND FALSE !((int )q_req_up == 1) [L476] RET update_channels() [L477] CALL init_threads() [L265] COND TRUE (int )p_dw_i == 1 [L266] p_dw_st = 0 [L270] COND TRUE (int )c_dr_i == 1 [L271] c_dr_st = 0 [L477] RET init_threads() [L478] CALL fire_delta_events() [L303] COND FALSE !((int )q_read_ev == 0) [L308] COND FALSE !((int )q_write_ev == 0) [L478] RET fire_delta_events() [L479] CALL activate_threads() [L372] int tmp ; [L373] int tmp___0 ; [L377] CALL, EXPR is_do_write_p_triggered() [L55] int __retres1 ; [L58] COND FALSE !((int )p_dw_pc == 1) [L68] COND FALSE !((int )p_dw_pc == 2) [L78] __retres1 = 0 [L80] return (__retres1); [L377] RET, EXPR is_do_write_p_triggered() [L377] tmp = is_do_write_p_triggered() [L379] COND FALSE !(\read(tmp)) [L385] CALL, EXPR is_do_read_c_triggered() [L84] int __retres1 ; [L87] COND FALSE !((int )c_dr_pc == 1) [L97] COND FALSE !((int )c_dr_pc == 2) [L107] __retres1 = 0 [L109] return (__retres1); [L385] RET, EXPR is_do_read_c_triggered() [L385] tmp___0 = is_do_read_c_triggered() [L387] COND FALSE !(\read(tmp___0)) [L479] RET activate_threads() [L480] CALL reset_delta_events() [L321] COND FALSE !((int )q_read_ev == 1) [L326] COND FALSE !((int )q_write_ev == 1) [L480] RET reset_delta_events() [L483] COND TRUE 1 [L486] kernel_st = 1 [L487] CALL eval() [L397] int tmp ; [L398] int tmp___0 ; [L399] int tmp___1 ; [L402] COND TRUE 1 [L405] CALL, EXPR exists_runnable_thread() [L280] int __retres1 ; [L283] COND TRUE (int )p_dw_st == 0 [L284] __retres1 = 1 [L296] return (__retres1); [L405] RET, EXPR exists_runnable_thread() [L405] tmp___1 = exists_runnable_thread() [L407] COND TRUE \read(tmp___1) [L412] COND TRUE (int )p_dw_st == 0 [L414] tmp = __VERIFIER_nondet_int() [L416] COND TRUE \read(tmp) [L418] p_dw_st = 1 [L419] CALL do_write_p() [L141] COND TRUE (int )p_dw_pc == 0 [L156] COND TRUE 1 [L158] p_dw_st = 2 [L159] p_dw_pc = 1 [L419] RET do_write_p() [L427] COND TRUE (int )c_dr_st == 0 [L429] tmp___0 = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp___0) [L433] c_dr_st = 1 [L434] CALL do_read_c() [L188] int a ; [L191] COND TRUE (int )c_dr_pc == 0 [L202] COND TRUE 1 [L204] c_dr_st = 2 [L205] c_dr_pc = 1 [L206] a_t = a [L434] RET do_read_c() [L402] COND TRUE 1 [L405] CALL, EXPR exists_runnable_thread() [L280] int __retres1 ; [L283] COND FALSE !((int )p_dw_st == 0) [L287] COND TRUE (int )c_dr_st == 0 [L288] __retres1 = 1 [L296] return (__retres1); [L405] RET, EXPR exists_runnable_thread() [L405] tmp___1 = exists_runnable_thread() [L407] COND TRUE \read(tmp___1) [L412] COND FALSE !((int )p_dw_st == 0) [L427] COND TRUE (int )c_dr_st == 0 [L429] tmp___0 = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp___0) [L433] c_dr_st = 1 [L434] CALL do_read_c() [L188] int a ; [L191] COND FALSE !((int )c_dr_pc == 0) [L194] COND TRUE (int )c_dr_pc == 2 [L217] a = a_t [L221] a = q_buf_0 [L222] c_last_read = a [L223] c_num_read += 1 [L224] q_free = 1 [L225] q_req_up = 1 [L226] COND TRUE p_last_write == c_last_read [L227] COND FALSE !(p_num_write == c_num_read) [L231] CALL error() [L11] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 279 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 79.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 69.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1738 SDtfs, 11251 SDslu, 1892 SDs, 0 SdLazy, 17443 SolverSat, 5456 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 682 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 508 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56396 ImplicationChecksByTransitivity, 32.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8026occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 9505 StatesRemovedByMinimization, 5 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...