/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-b7b32d2 [2021-02-21 21:35:42,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:35:42,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:35:42,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:35:42,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:35:42,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:35:42,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:35:42,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:35:42,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:35:42,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:35:42,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:35:42,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:35:42,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:35:42,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:35:42,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:35:42,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:35:42,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:35:42,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:35:42,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:35:42,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:35:42,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:35:42,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:35:42,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:35:42,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:35:42,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 21:35:42,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 21:35:42,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 21:35:42,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 21:35:42,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 21:35:42,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 21:35:42,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 21:35:42,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 21:35:42,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 21:35:42,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 21:35:42,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 21:35:42,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 21:35:42,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 21:35:42,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 21:35:42,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:35:42,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:35:42,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:35:42,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:35:42,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:35:42,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:35:42,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:35:42,853 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:35:42,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:35:42,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:35:42,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:35:42,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:35:42,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:35:42,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:35:42,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:35:42,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:35:42,856 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:35:42,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:35:42,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:35:42,856 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:35:42,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:35:42,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:35:42,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:35:42,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:35:42,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:35:42,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:35:42,858 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:35:43,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:35:43,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:35:43,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:35:43,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:35:43,364 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:35:43,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2021-02-21 21:35:43,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e27cb91/527af0f9d50b4a6a8f150fec66b9f618/FLAGccb0d864c [2021-02-21 21:35:44,157 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:35:44,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2021-02-21 21:35:44,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e27cb91/527af0f9d50b4a6a8f150fec66b9f618/FLAGccb0d864c [2021-02-21 21:35:44,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e27cb91/527af0f9d50b4a6a8f150fec66b9f618 [2021-02-21 21:35:44,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:35:44,518 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:35:44,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:35:44,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:35:44,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:35:44,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:35:44" (1/1) ... [2021-02-21 21:35:44,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d2572c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:35:44, skipping insertion in model container [2021-02-21 21:35:44,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:35:44" (1/1) ... [2021-02-21 21:35:44,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:35:44,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:35:44,887 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] [2021-02-21 21:35:45,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:35:45,042 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:35:45,057 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] [2021-02-21 21:35:45,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:35:45,118 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:35:45,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:35:45 WrapperNode [2021-02-21 21:35:45,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:35:45,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:35:45,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:35:45,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:35:45,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:35:45" (1/1) ... [2021-02-21 21:35:45,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:35:45" (1/1) ... [2021-02-21 21:35:45,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:35:45" (1/1) ... [2021-02-21 21:35:45,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:35:45" (1/1) ... [2021-02-21 21:35:45,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:35:45" (1/1) ... [2021-02-21 21:35:45,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:35:45" (1/1) ... [2021-02-21 21:35:45,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:35:45" (1/1) ... [2021-02-21 21:35:45,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:35:45,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:35:45,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:35:45,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:35:45,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:35:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:35:45,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:35:45,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:35:45,321 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:35:45,321 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-02-21 21:35:45,321 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2021-02-21 21:35:45,322 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-02-21 21:35:45,322 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-02-21 21:35:45,322 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-02-21 21:35:45,322 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2021-02-21 21:35:45,322 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2021-02-21 21:35:45,322 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-02-21 21:35:45,323 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2021-02-21 21:35:45,323 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-02-21 21:35:45,323 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-02-21 21:35:45,323 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-02-21 21:35:45,323 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2021-02-21 21:35:45,324 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2021-02-21 21:35:45,324 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-02-21 21:35:45,324 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2021-02-21 21:35:45,324 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2021-02-21 21:35:45,324 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2021-02-21 21:35:45,324 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2021-02-21 21:35:45,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:35:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:35:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:35:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:35:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:35:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:35:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-02-21 21:35:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2021-02-21 21:35:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-02-21 21:35:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-02-21 21:35:45,326 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-02-21 21:35:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2021-02-21 21:35:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2021-02-21 21:35:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-02-21 21:35:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2021-02-21 21:35:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-02-21 21:35:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-02-21 21:35:45,327 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-02-21 21:35:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2021-02-21 21:35:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2021-02-21 21:35:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-02-21 21:35:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2021-02-21 21:35:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2021-02-21 21:35:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2021-02-21 21:35:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2021-02-21 21:35:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:35:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:35:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:35:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:35:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:35:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:35:45,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:35:46,149 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L213: ~a_t~0 := ~a~0; [2021-02-21 21:35:46,150 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L211: ~c_dr_st~0 := 2; [2021-02-21 21:35:46,150 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume 1 == ~q_free~0; [2021-02-21 21:35:46,150 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !(1 == ~q_free~0); [2021-02-21 21:35:46,150 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L212: ~c_dr_pc~0 := 2; [2021-02-21 21:35:46,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:35:46,182 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 21:35:46,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:35:46 BoogieIcfgContainer [2021-02-21 21:35:46,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:35:46,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:35:46,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:35:46,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:35:46,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:35:44" (1/3) ... [2021-02-21 21:35:46,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21615518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:35:46, skipping insertion in model container [2021-02-21 21:35:46,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:35:45" (2/3) ... [2021-02-21 21:35:46,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21615518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:35:46, skipping insertion in model container [2021-02-21 21:35:46,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:35:46" (3/3) ... [2021-02-21 21:35:46,195 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2021-02-21 21:35:46,204 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:35:46,210 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:35:46,231 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:35:46,260 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:35:46,261 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:35:46,261 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:35:46,261 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:35:46,261 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:35:46,261 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:35:46,262 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:35:46,262 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:35:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states. [2021-02-21 21:35:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-02-21 21:35:46,304 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:35:46,306 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] [2021-02-21 21:35:46,306 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:35:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:35:46,313 INFO L82 PathProgramCache]: Analyzing trace with hash -690017505, now seen corresponding path program 1 times [2021-02-21 21:35:46,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:35:46,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341416018] [2021-02-21 21:35:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:35:46,400 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:35:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:35:46,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:46,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:35:46,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:46,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:35:46,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:46,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:35:46,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:46,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:35:46,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:46,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:35:46,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:46,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:35:47,077 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-02-21 21:35:47,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:35:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:35:47,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:35:47,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:35:47,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-21 21:35:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:35:47,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:35:47,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:35:47,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-21 21:35:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:35:47,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:35:47,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-21 21:35:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:35:47,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:35:47,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-21 21:35:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:35:47,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:35:47,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-21 21:35:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:35:47,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:35:47,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:35:47,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 21:35:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:35:47,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:35:47,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:35:47,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:35:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:35:47,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:35:47,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-21 21:35:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:35:47,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:35:47,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 21:35:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:35:47,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:35:47,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:35:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:35:47,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341416018] [2021-02-21 21:35:47,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:35:47,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:35:47,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370820349] [2021-02-21 21:35:47,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:35:47,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:35:47,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:35:47,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:35:47,676 INFO L87 Difference]: Start difference. First operand 273 states. Second operand 13 states. [2021-02-21 21:35:48,207 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2021-02-21 21:35:49,937 WARN L202 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2021-02-21 21:35:50,974 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-21 21:35:51,976 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2021-02-21 21:35:53,999 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-21 21:35:55,375 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-21 21:36:03,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:36:03,591 INFO L93 Difference]: Finished difference Result 2150 states and 3109 transitions. [2021-02-21 21:36:03,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-02-21 21:36:03,593 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 140 [2021-02-21 21:36:03,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:36:03,643 INFO L225 Difference]: With dead ends: 2150 [2021-02-21 21:36:03,644 INFO L226 Difference]: Without dead ends: 1875 [2021-02-21 21:36:03,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3585 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1275, Invalid=8037, Unknown=0, NotChecked=0, Total=9312 [2021-02-21 21:36:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2021-02-21 21:36:04,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1315. [2021-02-21 21:36:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2021-02-21 21:36:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1603 transitions. [2021-02-21 21:36:04,147 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1603 transitions. Word has length 140 [2021-02-21 21:36:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:36:04,148 INFO L480 AbstractCegarLoop]: Abstraction has 1315 states and 1603 transitions. [2021-02-21 21:36:04,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:36:04,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1603 transitions. [2021-02-21 21:36:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-02-21 21:36:04,153 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:36:04,154 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] [2021-02-21 21:36:04,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:36:04,154 INFO L428 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:36:04,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:36:04,155 INFO L82 PathProgramCache]: Analyzing trace with hash 965313352, now seen corresponding path program 1 times [2021-02-21 21:36:04,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:36:04,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104212529] [2021-02-21 21:36:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:36:04,162 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:36:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:04,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:04,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:04,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:04,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:04,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:04,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:36:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:04,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-21 21:36:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:04,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-21 21:36:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:04,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:04,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-21 21:36:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:04,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:04,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:04,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-21 21:36:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:04,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:04,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-21 21:36:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:04,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 21:36:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:04,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:04,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:36:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:04,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:04,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-21 21:36:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:04,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:04,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 21:36:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:04,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:04,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:04,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:36:04,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104212529] [2021-02-21 21:36:04,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:36:04,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:36:04,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052395921] [2021-02-21 21:36:04,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:36:04,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:36:04,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:36:04,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:36:04,646 INFO L87 Difference]: Start difference. First operand 1315 states and 1603 transitions. Second operand 9 states. [2021-02-21 21:36:11,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:36:11,020 INFO L93 Difference]: Finished difference Result 5283 states and 8021 transitions. [2021-02-21 21:36:11,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 21:36:11,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2021-02-21 21:36:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:36:11,063 INFO L225 Difference]: With dead ends: 5283 [2021-02-21 21:36:11,063 INFO L226 Difference]: Without dead ends: 4033 [2021-02-21 21:36:11,084 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 [2021-02-21 21:36:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2021-02-21 21:36:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 2555. [2021-02-21 21:36:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2555 states. [2021-02-21 21:36:11,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2555 states to 2555 states and 3236 transitions. [2021-02-21 21:36:11,912 INFO L78 Accepts]: Start accepts. Automaton has 2555 states and 3236 transitions. Word has length 140 [2021-02-21 21:36:11,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:36:11,912 INFO L480 AbstractCegarLoop]: Abstraction has 2555 states and 3236 transitions. [2021-02-21 21:36:11,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:36:11,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2555 states and 3236 transitions. [2021-02-21 21:36:11,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-02-21 21:36:11,916 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:36:11,916 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] [2021-02-21 21:36:11,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:36:11,917 INFO L428 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:36:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:36:11,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1732617692, now seen corresponding path program 1 times [2021-02-21 21:36:11,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:36:11,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857246474] [2021-02-21 21:36:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:36:11,921 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:36:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:11,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:11,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:11,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:11,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:11,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:11,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:12,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:36:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:12,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:12,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-21 21:36:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:12,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:12,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:12,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:12,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:36:12,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-21 21:36:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:12,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:12,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:12,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-21 21:36:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:12,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:12,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-21 21:36:12,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-21 21:36:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:12,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:12,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-21 21:36:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:12,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:12,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:12,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 21:36:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:12,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:12,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:36:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:12,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:12,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:12,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-21 21:36:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:12,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:12,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:12,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 21:36:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:12,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:12,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:36:12,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857246474] [2021-02-21 21:36:12,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:36:12,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:36:12,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412689566] [2021-02-21 21:36:12,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:36:12,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:36:12,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:36:12,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:36:12,261 INFO L87 Difference]: Start difference. First operand 2555 states and 3236 transitions. Second operand 9 states. [2021-02-21 21:36:15,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:36:15,713 INFO L93 Difference]: Finished difference Result 5653 states and 7647 transitions. [2021-02-21 21:36:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 21:36:15,714 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2021-02-21 21:36:15,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:36:15,742 INFO L225 Difference]: With dead ends: 5653 [2021-02-21 21:36:15,742 INFO L226 Difference]: Without dead ends: 3161 [2021-02-21 21:36:15,756 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 [2021-02-21 21:36:15,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2021-02-21 21:36:16,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2213. [2021-02-21 21:36:16,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2213 states. [2021-02-21 21:36:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 2789 transitions. [2021-02-21 21:36:16,282 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 2789 transitions. Word has length 141 [2021-02-21 21:36:16,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:36:16,283 INFO L480 AbstractCegarLoop]: Abstraction has 2213 states and 2789 transitions. [2021-02-21 21:36:16,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:36:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 2789 transitions. [2021-02-21 21:36:16,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-02-21 21:36:16,286 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:36:16,287 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] [2021-02-21 21:36:16,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:36:16,287 INFO L428 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:36:16,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:36:16,288 INFO L82 PathProgramCache]: Analyzing trace with hash -619892627, now seen corresponding path program 1 times [2021-02-21 21:36:16,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:36:16,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251872492] [2021-02-21 21:36:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:36:16,292 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:36:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:16,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:16,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:16,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:16,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:16,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:36:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:16,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-21 21:36:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:16,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:16,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-21 21:36:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:16,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-21 21:36:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:16,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-21 21:36:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:16,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-21 21:36:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:16,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 21:36:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:16,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:36:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:16,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-21 21:36:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:16,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 21:36:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:16,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:16,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:36:16,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251872492] [2021-02-21 21:36:16,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:36:16,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 21:36:16,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881931293] [2021-02-21 21:36:16,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 21:36:16,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:36:16,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 21:36:16,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-21 21:36:16,664 INFO L87 Difference]: Start difference. First operand 2213 states and 2789 transitions. Second operand 8 states. [2021-02-21 21:36:21,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:36:21,338 INFO L93 Difference]: Finished difference Result 7536 states and 11029 transitions. [2021-02-21 21:36:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-21 21:36:21,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 144 [2021-02-21 21:36:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:36:21,386 INFO L225 Difference]: With dead ends: 7536 [2021-02-21 21:36:21,386 INFO L226 Difference]: Without dead ends: 5386 [2021-02-21 21:36:21,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2021-02-21 21:36:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2021-02-21 21:36:22,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 3992. [2021-02-21 21:36:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3992 states. [2021-02-21 21:36:22,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5139 transitions. [2021-02-21 21:36:22,476 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5139 transitions. Word has length 144 [2021-02-21 21:36:22,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:36:22,478 INFO L480 AbstractCegarLoop]: Abstraction has 3992 states and 5139 transitions. [2021-02-21 21:36:22,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 21:36:22,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5139 transitions. [2021-02-21 21:36:22,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-21 21:36:22,483 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:36:22,484 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] [2021-02-21 21:36:22,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:36:22,484 INFO L428 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:36:22,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:36:22,485 INFO L82 PathProgramCache]: Analyzing trace with hash -520132439, now seen corresponding path program 1 times [2021-02-21 21:36:22,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:36:22,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700271516] [2021-02-21 21:36:22,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:36:22,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:22,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:22,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:22,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:22,809 WARN L141 QuantifierPusher]: treesize reduction 24, result has 92.6 percent of original size [2021-02-21 21:36:22,851 WARN L147 QuantifierPusher]: treesize reduction 24, result has 92.6 percent of original size 299 [2021-02-21 21:36:22,994 WARN L141 QuantifierPusher]: treesize reduction 152, result has 51.1 percent of original size [2021-02-21 21:36:23,001 WARN L147 QuantifierPusher]: treesize reduction 152, result has 51.1 percent of original size 159 [2021-02-21 21:36:23,002 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:36:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:23,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:23,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:36:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:23,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:23,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-21 21:36:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:23,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:23,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-21 21:36:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:23,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:23,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-21 21:36:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:23,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:23,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-21 21:36:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:23,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:23,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-21 21:36:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:23,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 21:36:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:23,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:23,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:36:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:23,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:23,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-21 21:36:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:23,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:23,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-02-21 21:36:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:36:23,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:36:23,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:36:23,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:36:23,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:36:23,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:36:23,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:36:23,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:36:23,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:36:23,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:36:23,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:36:23,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:36:23,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:36:23,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:36:23,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:36:23,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:36:23,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:36:23,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:36:23,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:36:23,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:36:23,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-02-21 21:36:23,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:36:23,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:36:23,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:36:23,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:36:23,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:36:23,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:36:23,581 WARN L141 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-02-21 21:36:23,582 WARN L147 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size 10 [2021-02-21 21:36:23,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:36:23,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 21:36:23,631 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-21 21:36:23,632 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-21 21:36:23,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:36:23,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 21:36:23,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 21:36:23,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 21:36:23,728 WARN L141 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-02-21 21:36:23,729 WARN L147 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size 13 [2021-02-21 21:36:23,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 21:36:23,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 21:36:23,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 21:36:23,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 21:36:23,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 21:36:23,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:23,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-21 21:36:24,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:36:24,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:36:24,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-02-21 21:36:24,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 21:36:24,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 21:36:24,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 21:36:24,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 21:36:24,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-21 21:36:24,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-21 21:36:24,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 21:36:24,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 21:36:24,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:36:24,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:36:24,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-21 21:36:24,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:36:24,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:36:24,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700271516] [2021-02-21 21:36:24,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:36:24,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-02-21 21:36:24,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51288400] [2021-02-21 21:36:24,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-21 21:36:24,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:36:24,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-21 21:36:24,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2021-02-21 21:36:24,464 INFO L87 Difference]: Start difference. First operand 3992 states and 5139 transitions. Second operand 32 states. [2021-02-21 21:36:25,903 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-21 21:36:26,058 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-21 21:36:26,328 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-21 21:36:26,468 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-21 21:36:26,652 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-21 21:36:26,823 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-21 21:36:27,001 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-21 21:36:27,170 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-21 21:36:27,408 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:36:27,566 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-21 21:36:27,757 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-21 21:36:27,972 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-21 21:36:28,161 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-21 21:36:28,395 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-21 21:36:28,794 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-21 21:36:29,063 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-02-21 21:36:29,626 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-21 21:36:29,908 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:36:30,084 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-02-21 21:36:32,081 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-21 21:36:32,267 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-21 21:36:32,414 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:36:32,675 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-21 21:36:33,054 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-02-21 21:36:33,347 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-21 21:36:35,381 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-21 21:36:35,643 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-21 21:36:35,932 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-21 21:36:36,931 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-21 21:36:37,265 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-21 21:36:37,592 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-21 21:36:37,870 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 21:36:38,459 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-21 21:36:38,630 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-21 21:36:38,851 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-21 21:36:39,077 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-21 21:36:39,468 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-21 21:36:41,989 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-21 21:36:42,358 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-21 21:36:42,493 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-21 21:36:43,288 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-02-21 21:36:43,880 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:36:44,311 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-21 21:36:44,541 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-21 21:36:44,731 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-21 21:36:48,089 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 110 [2021-02-21 21:36:48,403 WARN L202 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2021-02-21 21:36:48,678 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-02-21 21:36:48,865 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-21 21:36:49,075 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-02-21 21:36:52,553 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:36:52,699 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-21 21:36:52,841 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-21 21:36:53,001 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-21 21:36:53,161 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-21 21:36:53,318 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-21 21:36:53,473 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-21 21:36:53,639 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-21 21:36:53,825 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-21 21:36:54,018 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-21 21:36:54,202 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-21 21:36:54,396 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-21 21:36:55,210 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-21 21:36:55,372 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-21 21:36:55,526 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-21 21:36:55,769 WARN L202 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-02-21 21:36:55,963 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-21 21:36:56,151 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-02-21 21:36:56,347 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-21 21:36:56,565 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-21 21:36:56,801 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-21 21:36:57,045 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-21 21:36:57,263 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-21 21:36:57,482 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-21 21:36:59,767 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2021-02-21 21:37:00,125 WARN L202 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2021-02-21 21:37:00,435 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-21 21:37:00,660 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-21 21:37:01,917 WARN L202 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2021-02-21 21:37:02,365 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2021-02-21 21:37:02,758 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-21 21:37:03,052 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-02-21 21:37:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:37:06,325 INFO L93 Difference]: Finished difference Result 17079 states and 23945 transitions. [2021-02-21 21:37:06,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 318 states. [2021-02-21 21:37:06,326 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 176 [2021-02-21 21:37:06,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:37:06,433 INFO L225 Difference]: With dead ends: 17079 [2021-02-21 21:37:06,434 INFO L226 Difference]: Without dead ends: 13151 [2021-02-21 21:37:06,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52430 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=12705, Invalid=106665, Unknown=0, NotChecked=0, Total=119370 [2021-02-21 21:37:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13151 states. [2021-02-21 21:37:09,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13151 to 8026. [2021-02-21 21:37:09,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8026 states. [2021-02-21 21:37:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8026 states to 8026 states and 10241 transitions. [2021-02-21 21:37:09,137 INFO L78 Accepts]: Start accepts. Automaton has 8026 states and 10241 transitions. Word has length 176 [2021-02-21 21:37:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:37:09,138 INFO L480 AbstractCegarLoop]: Abstraction has 8026 states and 10241 transitions. [2021-02-21 21:37:09,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-02-21 21:37:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand 8026 states and 10241 transitions. [2021-02-21 21:37:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 21:37:09,142 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:37:09,143 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] [2021-02-21 21:37:09,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:37:09,144 INFO L428 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:37:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:37:09,145 INFO L82 PathProgramCache]: Analyzing trace with hash 910518990, now seen corresponding path program 1 times [2021-02-21 21:37:09,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:37:09,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093720493] [2021-02-21 21:37:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:37:09,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:09,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:37:09,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:09,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:37:09,378 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.5 percent of original size [2021-02-21 21:37:09,383 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.5 percent of original size 208 [2021-02-21 21:37:09,543 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.7 percent of original size [2021-02-21 21:37:09,552 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.7 percent of original size 214 [2021-02-21 21:37:09,699 WARN L141 QuantifierPusher]: treesize reduction 195, result has 52.3 percent of original size [2021-02-21 21:37:09,705 WARN L147 QuantifierPusher]: treesize reduction 195, result has 52.3 percent of original size 214 [2021-02-21 21:37:09,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:09,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:37:09,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:37:09,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:37:09,933 WARN L141 QuantifierPusher]: treesize reduction 201, result has 52.3 percent of original size [2021-02-21 21:37:09,938 WARN L147 QuantifierPusher]: treesize reduction 201, result has 52.3 percent of original size 220 [2021-02-21 21:37:09,939 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 21:37:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:37:09,992 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:37:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:37:10,046 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:37:10,140 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:37:10,141 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:37:10,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:37:10,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:37:10 BoogieIcfgContainer [2021-02-21 21:37:10,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:37:10,174 INFO L168 Benchmark]: Toolchain (without parser) took 85671.02 ms. Allocated memory was 154.1 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 129.0 MB in the beginning and 1.1 GB in the end (delta: -957.3 MB). Peak memory consumption was 164.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:37:10,174 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 154.1 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:37:10,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.89 ms. Allocated memory is still 154.1 MB. Free memory was 128.1 MB in the beginning and 114.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:37:10,174 INFO L168 Benchmark]: Boogie Preprocessor took 76.91 ms. Allocated memory is still 154.1 MB. Free memory was 114.7 MB in the beginning and 112.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:37:10,175 INFO L168 Benchmark]: RCFGBuilder took 986.24 ms. Allocated memory is still 154.1 MB. Free memory was 112.2 MB in the beginning and 108.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:37:10,175 INFO L168 Benchmark]: TraceAbstraction took 83985.82 ms. Allocated memory was 154.1 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 107.6 MB in the beginning and 1.1 GB in the end (delta: -978.7 MB). Peak memory consumption was 141.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:37:10,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 154.1 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 592.89 ms. Allocated memory is still 154.1 MB. Free memory was 128.1 MB in the beginning and 114.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 76.91 ms. Allocated memory is still 154.1 MB. Free memory was 114.7 MB in the beginning and 112.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 986.24 ms. Allocated memory is still 154.1 MB. Free memory was 112.2 MB in the beginning and 108.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 83985.82 ms. Allocated memory was 154.1 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 107.6 MB in the beginning and 1.1 GB in the end (delta: -978.7 MB). Peak memory consumption was 141.2 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: 83.8s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 72.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1738 SDtfs, 11251 SDslu, 1892 SDs, 0 SdLazy, 17443 SolverSat, 5461 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 682 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 508 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56396 ImplicationChecksByTransitivity, 34.3s 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: 5.4s 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...