java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:50:58,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:50:58,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:50:58,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:50:58,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:50:58,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:50:58,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:50:59,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:50:59,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:50:59,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:50:59,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:50:59,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:50:59,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:50:59,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:50:59,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:50:59,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:50:59,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:50:59,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:50:59,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:50:59,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:50:59,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:50:59,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:50:59,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:50:59,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:50:59,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:50:59,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:50:59,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:50:59,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:50:59,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:50:59,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:50:59,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:50:59,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:50:59,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:50:59,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:50:59,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:50:59,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:50:59,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:50:59,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:50:59,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:50:59,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:50:59,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:50:59,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:50:59,068 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:50:59,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:50:59,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:50:59,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:50:59,070 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:50:59,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:50:59,070 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:50:59,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:50:59,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:50:59,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:50:59,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:50:59,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:50:59,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:50:59,072 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:50:59,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:50:59,072 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:50:59,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:50:59,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:50:59,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:50:59,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:50:59,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:50:59,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:50:59,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:50:59,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:50:59,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:50:59,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:50:59,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:50:59,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:50:59,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:50:59,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:50:59,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:50:59,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:50:59,389 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:50:59,389 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:50:59,390 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2019-10-13 19:50:59,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef1c0c420/91b8efcb88b1474dadf8d3088a671811/FLAG56fee56bc [2019-10-13 19:50:59,966 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:50:59,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2019-10-13 19:50:59,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef1c0c420/91b8efcb88b1474dadf8d3088a671811/FLAG56fee56bc [2019-10-13 19:51:00,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef1c0c420/91b8efcb88b1474dadf8d3088a671811 [2019-10-13 19:51:00,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:51:00,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:51:00,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:51:00,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:51:00,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:51:00,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:00" (1/1) ... [2019-10-13 19:51:00,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a4bcce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:00, skipping insertion in model container [2019-10-13 19:51:00,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:00" (1/1) ... [2019-10-13 19:51:00,283 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:51:00,335 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:51:00,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:51:00,606 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:51:00,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:51:00,774 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:51:00,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:00 WrapperNode [2019-10-13 19:51:00,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:51:00,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:51:00,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:51:00,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:51:00,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:00" (1/1) ... [2019-10-13 19:51:00,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:00" (1/1) ... [2019-10-13 19:51:00,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:00" (1/1) ... [2019-10-13 19:51:00,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:00" (1/1) ... [2019-10-13 19:51:00,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:00" (1/1) ... [2019-10-13 19:51:00,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:00" (1/1) ... [2019-10-13 19:51:00,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:00" (1/1) ... [2019-10-13 19:51:00,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:51:00,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:51:00,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:51:00,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:51:00,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:00" (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 [2019-10-13 19:51:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:51:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:51:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-13 19:51:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2019-10-13 19:51:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2019-10-13 19:51:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2019-10-13 19:51:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2019-10-13 19:51:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2019-10-13 19:51:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2019-10-13 19:51:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-13 19:51:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-13 19:51:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-13 19:51:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-13 19:51:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-13 19:51:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-10-13 19:51:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-10-13 19:51:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-13 19:51:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-13 19:51:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-13 19:51:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-13 19:51:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-13 19:51:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:51:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:51:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:51:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-13 19:51:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2019-10-13 19:51:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2019-10-13 19:51:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2019-10-13 19:51:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2019-10-13 19:51:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2019-10-13 19:51:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2019-10-13 19:51:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-13 19:51:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-13 19:51:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-13 19:51:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-13 19:51:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-13 19:51:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-10-13 19:51:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-10-13 19:51:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-13 19:51:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-13 19:51:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-13 19:51:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-13 19:51:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-13 19:51:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:51:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:51:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:51:01,500 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := ~a~0; [2019-10-13 19:51:01,501 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !(1 == ~q_free~0); [2019-10-13 19:51:01,521 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:51:01,521 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 19:51:01,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:01 BoogieIcfgContainer [2019-10-13 19:51:01,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:51:01,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:51:01,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:51:01,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:51:01,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:51:00" (1/3) ... [2019-10-13 19:51:01,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273c26e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:01, skipping insertion in model container [2019-10-13 19:51:01,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:00" (2/3) ... [2019-10-13 19:51:01,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273c26e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:01, skipping insertion in model container [2019-10-13 19:51:01,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:01" (3/3) ... [2019-10-13 19:51:01,531 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2019-10-13 19:51:01,542 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:51:01,550 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:51:01,559 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:51:01,587 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:51:01,587 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:51:01,587 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:51:01,588 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:51:01,588 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:51:01,588 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:51:01,588 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:51:01,588 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:51:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2019-10-13 19:51:01,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 19:51:01,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:01,625 INFO L380 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] [2019-10-13 19:51:01,627 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:01,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1427944937, now seen corresponding path program 1 times [2019-10-13 19:51:01,641 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:01,641 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950555367] [2019-10-13 19:51:01,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:01,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:01,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:02,366 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950555367] [2019-10-13 19:51:02,367 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:02,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:51:02,368 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868195568] [2019-10-13 19:51:02,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:51:02,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:02,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:51:02,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:02,397 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 10 states. [2019-10-13 19:51:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:06,312 INFO L93 Difference]: Finished difference Result 630 states and 1050 transitions. [2019-10-13 19:51:06,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-13 19:51:06,314 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-10-13 19:51:06,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:06,341 INFO L225 Difference]: With dead ends: 630 [2019-10-13 19:51:06,341 INFO L226 Difference]: Without dead ends: 476 [2019-10-13 19:51:06,349 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:51:06,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2019-10-13 19:51:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 271. [2019-10-13 19:51:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2019-10-13 19:51:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 363 transitions. [2019-10-13 19:51:06,484 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 363 transitions. Word has length 78 [2019-10-13 19:51:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:06,485 INFO L462 AbstractCegarLoop]: Abstraction has 271 states and 363 transitions. [2019-10-13 19:51:06,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:51:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 363 transitions. [2019-10-13 19:51:06,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 19:51:06,490 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:06,491 INFO L380 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] [2019-10-13 19:51:06,491 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:06,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:06,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1440144215, now seen corresponding path program 1 times [2019-10-13 19:51:06,492 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:06,492 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315653283] [2019-10-13 19:51:06,492 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:06,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:06,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:06,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315653283] [2019-10-13 19:51:06,781 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:06,782 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:51:06,782 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362793838] [2019-10-13 19:51:06,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:51:06,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:06,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:51:06,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:06,786 INFO L87 Difference]: Start difference. First operand 271 states and 363 transitions. Second operand 10 states. [2019-10-13 19:51:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:10,605 INFO L93 Difference]: Finished difference Result 924 states and 1361 transitions. [2019-10-13 19:51:10,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-13 19:51:10,605 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-10-13 19:51:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:10,614 INFO L225 Difference]: With dead ends: 924 [2019-10-13 19:51:10,614 INFO L226 Difference]: Without dead ends: 680 [2019-10-13 19:51:10,619 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2019-10-13 19:51:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2019-10-13 19:51:10,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 416. [2019-10-13 19:51:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-10-13 19:51:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 562 transitions. [2019-10-13 19:51:10,684 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 562 transitions. Word has length 78 [2019-10-13 19:51:10,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:10,684 INFO L462 AbstractCegarLoop]: Abstraction has 416 states and 562 transitions. [2019-10-13 19:51:10,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:51:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 562 transitions. [2019-10-13 19:51:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 19:51:10,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:10,688 INFO L380 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] [2019-10-13 19:51:10,689 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:10,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:10,689 INFO L82 PathProgramCache]: Analyzing trace with hash -53358805, now seen corresponding path program 1 times [2019-10-13 19:51:10,689 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:10,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802327662] [2019-10-13 19:51:10,690 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:10,690 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:10,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:10,946 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802327662] [2019-10-13 19:51:10,946 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:10,946 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:51:10,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655238272] [2019-10-13 19:51:10,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:51:10,947 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:10,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:51:10,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:10,948 INFO L87 Difference]: Start difference. First operand 416 states and 562 transitions. Second operand 10 states. [2019-10-13 19:51:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:16,094 INFO L93 Difference]: Finished difference Result 1984 states and 2933 transitions. [2019-10-13 19:51:16,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-13 19:51:16,095 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-10-13 19:51:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:16,109 INFO L225 Difference]: With dead ends: 1984 [2019-10-13 19:51:16,109 INFO L226 Difference]: Without dead ends: 1611 [2019-10-13 19:51:16,113 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=931, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 19:51:16,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2019-10-13 19:51:16,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1175. [2019-10-13 19:51:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-10-13 19:51:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1572 transitions. [2019-10-13 19:51:16,306 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1572 transitions. Word has length 78 [2019-10-13 19:51:16,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:16,308 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1572 transitions. [2019-10-13 19:51:16,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:51:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1572 transitions. [2019-10-13 19:51:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-13 19:51:16,311 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:16,312 INFO L380 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] [2019-10-13 19:51:16,312 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:16,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1828215755, now seen corresponding path program 1 times [2019-10-13 19:51:16,313 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:16,314 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876361303] [2019-10-13 19:51:16,314 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:16,314 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:16,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:16,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876361303] [2019-10-13 19:51:16,572 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:16,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:51:16,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350786436] [2019-10-13 19:51:16,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:51:16,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:16,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:51:16,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:51:16,576 INFO L87 Difference]: Start difference. First operand 1175 states and 1572 transitions. Second operand 11 states. [2019-10-13 19:51:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:18,975 INFO L93 Difference]: Finished difference Result 2733 states and 3855 transitions. [2019-10-13 19:51:18,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:51:18,975 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2019-10-13 19:51:18,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:18,989 INFO L225 Difference]: With dead ends: 2733 [2019-10-13 19:51:18,989 INFO L226 Difference]: Without dead ends: 1601 [2019-10-13 19:51:18,996 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:51:18,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2019-10-13 19:51:19,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1195. [2019-10-13 19:51:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2019-10-13 19:51:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1587 transitions. [2019-10-13 19:51:19,151 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1587 transitions. Word has length 79 [2019-10-13 19:51:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:19,152 INFO L462 AbstractCegarLoop]: Abstraction has 1195 states and 1587 transitions. [2019-10-13 19:51:19,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:51:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1587 transitions. [2019-10-13 19:51:19,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-13 19:51:19,159 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:19,159 INFO L380 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] [2019-10-13 19:51:19,167 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:19,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:19,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1580069261, now seen corresponding path program 1 times [2019-10-13 19:51:19,168 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:19,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269395113] [2019-10-13 19:51:19,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:19,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:19,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:51:19,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269395113] [2019-10-13 19:51:19,403 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:51:19,403 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:51:19,403 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853885331] [2019-10-13 19:51:19,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:51:19,404 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:19,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:51:19,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:51:19,406 INFO L87 Difference]: Start difference. First operand 1195 states and 1587 transitions. Second operand 10 states. [2019-10-13 19:51:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:23,269 INFO L93 Difference]: Finished difference Result 4057 states and 5875 transitions. [2019-10-13 19:51:23,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 19:51:23,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2019-10-13 19:51:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:23,271 INFO L225 Difference]: With dead ends: 4057 [2019-10-13 19:51:23,271 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:51:23,285 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:51:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:51:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:51:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:51:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:51:23,287 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2019-10-13 19:51:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:23,287 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:51:23,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:51:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:51:23,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:51:23,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:51:23,411 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 6 [2019-10-13 19:51:23,764 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 97 [2019-10-13 19:51:23,925 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 97 [2019-10-13 19:51:25,209 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 6 [2019-10-13 19:51:25,668 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2019-10-13 19:51:25,855 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2019-10-13 19:51:32,082 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 13 [2019-10-13 19:51:32,604 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 13 [2019-10-13 19:51:32,889 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2019-10-13 19:51:33,087 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 17 [2019-10-13 19:51:33,364 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 17 [2019-10-13 19:51:33,612 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 23 [2019-10-13 19:51:33,865 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 17 [2019-10-13 19:51:34,161 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 32 [2019-10-13 19:51:34,391 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 23 [2019-10-13 19:51:34,537 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-10-13 19:51:34,826 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 32