/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/transmitter.02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:07:04,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:07:04,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:07:04,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:07:04,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:07:04,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:07:04,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:07:04,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:07:04,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:07:04,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:07:04,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:07:04,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:07:04,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:07:04,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:07:04,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:07:04,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:07:04,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:07:04,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:07:04,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:07:04,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:07:04,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:07:04,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:07:04,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:07:04,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:07:04,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 22:07:04,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 22:07:04,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 22:07:04,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 22:07:04,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 22:07:04,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 22:07:04,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 22:07:04,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 22:07:04,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 22:07:04,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 22:07:04,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 22:07:04,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 22:07:04,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 22:07:04,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 22:07:04,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:07:04,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:07:04,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:07:04,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:07:04,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:07:04,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:07:04,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:07:04,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:07:04,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:07:04,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:07:04,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:07:04,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:07:04,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:07:04,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:07:04,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:07:04,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:07:04,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:07:04,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:07:04,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:07:04,838 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:07:04,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:07:04,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:07:04,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:07:04,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:07:04,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:07:04,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:07:04,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:07:05,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:07:05,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:07:05,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:07:05,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:07:05,300 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:07:05,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-10-23 22:07:05,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1f29870/bfc9feaaced640d4a12ffaef71c16ae9/FLAG937b8b16e [2020-10-23 22:07:06,099 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:07:06,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-10-23 22:07:06,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1f29870/bfc9feaaced640d4a12ffaef71c16ae9/FLAG937b8b16e [2020-10-23 22:07:06,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1f29870/bfc9feaaced640d4a12ffaef71c16ae9 [2020-10-23 22:07:06,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:07:06,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:07:06,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:07:06,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:07:06,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:07:06,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:07:06" (1/1) ... [2020-10-23 22:07:06,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24235fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:06, skipping insertion in model container [2020-10-23 22:07:06,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:07:06" (1/1) ... [2020-10-23 22:07:06,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:07:06,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:07:06,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:07:06,711 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:07:06,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:07:06,779 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:07:06,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:06 WrapperNode [2020-10-23 22:07:06,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:07:06,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:07:06,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:07:06,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:07:06,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:06" (1/1) ... [2020-10-23 22:07:06,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:06" (1/1) ... [2020-10-23 22:07:06,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:06" (1/1) ... [2020-10-23 22:07:06,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:06" (1/1) ... [2020-10-23 22:07:06,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:06" (1/1) ... [2020-10-23 22:07:06,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:06" (1/1) ... [2020-10-23 22:07:06,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:06" (1/1) ... [2020-10-23 22:07:06,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:07:06,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:07:06,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:07:06,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:07:06,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:07:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:07:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:07:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:07:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-23 22:07:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-10-23 22:07:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-10-23 22:07:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-10-23 22:07:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-10-23 22:07:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-10-23 22:07:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-10-23 22:07:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-10-23 22:07:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-10-23 22:07:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-10-23 22:07:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-23 22:07:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-10-23 22:07:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-10-23 22:07:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-10-23 22:07:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-10-23 22:07:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-10-23 22:07:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-10-23 22:07:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-10-23 22:07:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-10-23 22:07:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-23 22:07:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:07:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:07:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:07:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:07:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:07:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:07:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-23 22:07:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-10-23 22:07:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-10-23 22:07:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-10-23 22:07:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-10-23 22:07:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-10-23 22:07:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-10-23 22:07:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-10-23 22:07:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-10-23 22:07:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-10-23 22:07:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-10-23 22:07:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-23 22:07:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-10-23 22:07:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-10-23 22:07:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-10-23 22:07:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-10-23 22:07:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-10-23 22:07:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-10-23 22:07:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-10-23 22:07:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-23 22:07:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:07:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:07:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:07:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:07:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:07:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:07:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:07:07,812 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:07:07,812 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 22:07:07,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:07:07 BoogieIcfgContainer [2020-10-23 22:07:07,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:07:07,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:07:07,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:07:07,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:07:07,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:07:06" (1/3) ... [2020-10-23 22:07:07,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ede28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:07:07, skipping insertion in model container [2020-10-23 22:07:07,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:07:06" (2/3) ... [2020-10-23 22:07:07,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ede28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:07:07, skipping insertion in model container [2020-10-23 22:07:07,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:07:07" (3/3) ... [2020-10-23 22:07:07,827 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-10-23 22:07:07,841 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:07:07,853 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:07:07,869 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:07:07,895 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:07:07,895 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:07:07,895 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:07:07,895 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:07:07,895 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:07:07,895 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:07:07,896 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:07:07,896 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:07:07,919 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states. [2020-10-23 22:07:07,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-23 22:07:07,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:07:07,944 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] [2020-10-23 22:07:07,944 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:07:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:07:07,952 INFO L82 PathProgramCache]: Analyzing trace with hash -129941249, now seen corresponding path program 1 times [2020-10-23 22:07:07,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:07:07,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879663379] [2020-10-23 22:07:07,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:07:08,051 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:07:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,429 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 22:07:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:07:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-23 22:07:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:07:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-23 22:07:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 22:07:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:07:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 22:07:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 22:07:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:07:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-23 22:07:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 22:07:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:07:08,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879663379] [2020-10-23 22:07:08,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:07:08,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:07:08,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87707338] [2020-10-23 22:07:08,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:07:08,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:07:08,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:07:08,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:07:08,854 INFO L87 Difference]: Start difference. First operand 269 states. Second operand 8 states. [2020-10-23 22:07:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:07:11,697 INFO L93 Difference]: Finished difference Result 641 states and 856 transitions. [2020-10-23 22:07:11,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 22:07:11,699 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-10-23 22:07:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:07:11,720 INFO L225 Difference]: With dead ends: 641 [2020-10-23 22:07:11,720 INFO L226 Difference]: Without dead ends: 403 [2020-10-23 22:07:11,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-23 22:07:11,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-23 22:07:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 255. [2020-10-23 22:07:11,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-23 22:07:11,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 307 transitions. [2020-10-23 22:07:11,927 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 307 transitions. Word has length 136 [2020-10-23 22:07:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:07:11,929 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 307 transitions. [2020-10-23 22:07:11,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:07:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 307 transitions. [2020-10-23 22:07:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-23 22:07:11,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:07:11,947 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] [2020-10-23 22:07:11,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:07:11,951 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:07:11,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:07:11,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1471285089, now seen corresponding path program 1 times [2020-10-23 22:07:11,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:07:11,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760234991] [2020-10-23 22:07:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:07:11,965 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:07:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:07:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-23 22:07:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:07:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-23 22:07:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 22:07:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:07:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 22:07:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 22:07:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:07:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-23 22:07:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 22:07:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:07:12,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760234991] [2020-10-23 22:07:12,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:07:12,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:07:12,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295660485] [2020-10-23 22:07:12,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:07:12,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:07:12,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:07:12,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:07:12,481 INFO L87 Difference]: Start difference. First operand 255 states and 307 transitions. Second operand 8 states. [2020-10-23 22:07:17,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:07:17,327 INFO L93 Difference]: Finished difference Result 1091 states and 1493 transitions. [2020-10-23 22:07:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 22:07:17,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-10-23 22:07:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:07:17,347 INFO L225 Difference]: With dead ends: 1091 [2020-10-23 22:07:17,347 INFO L226 Difference]: Without dead ends: 889 [2020-10-23 22:07:17,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-23 22:07:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-10-23 22:07:17,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 486. [2020-10-23 22:07:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-10-23 22:07:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 606 transitions. [2020-10-23 22:07:17,564 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 606 transitions. Word has length 136 [2020-10-23 22:07:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:07:17,565 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 606 transitions. [2020-10-23 22:07:17,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:07:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 606 transitions. [2020-10-23 22:07:17,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-23 22:07:17,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:07:17,570 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] [2020-10-23 22:07:17,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:07:17,570 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:07:17,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:07:17,572 INFO L82 PathProgramCache]: Analyzing trace with hash 472748502, now seen corresponding path program 1 times [2020-10-23 22:07:17,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:07:17,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609172700] [2020-10-23 22:07:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:07:17,576 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:07:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:07:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-23 22:07:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:07:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-23 22:07:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 22:07:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:07:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 22:07:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 22:07:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:07:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-23 22:07:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 22:07:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:07:17,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609172700] [2020-10-23 22:07:17,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:07:17,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:07:17,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507036905] [2020-10-23 22:07:17,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:07:17,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:07:17,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:07:17,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:07:17,890 INFO L87 Difference]: Start difference. First operand 486 states and 606 transitions. Second operand 8 states. [2020-10-23 22:07:20,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:07:20,504 INFO L93 Difference]: Finished difference Result 1201 states and 1566 transitions. [2020-10-23 22:07:20,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 22:07:20,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-10-23 22:07:20,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:07:20,516 INFO L225 Difference]: With dead ends: 1201 [2020-10-23 22:07:20,516 INFO L226 Difference]: Without dead ends: 766 [2020-10-23 22:07:20,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-23 22:07:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2020-10-23 22:07:20,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 475. [2020-10-23 22:07:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-23 22:07:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 589 transitions. [2020-10-23 22:07:20,673 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 589 transitions. Word has length 137 [2020-10-23 22:07:20,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:07:20,673 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 589 transitions. [2020-10-23 22:07:20,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:07:20,673 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 589 transitions. [2020-10-23 22:07:20,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-23 22:07:20,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:07:20,677 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] [2020-10-23 22:07:20,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:07:20,678 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:07:20,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:07:20,678 INFO L82 PathProgramCache]: Analyzing trace with hash 536543913, now seen corresponding path program 1 times [2020-10-23 22:07:20,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:07:20,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340153526] [2020-10-23 22:07:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:07:20,692 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:07:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:20,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:07:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:20,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-23 22:07:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:20,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:07:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:20,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-23 22:07:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:20,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 22:07:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:20,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:07:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:20,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 22:07:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:20,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 22:07:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:07:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:21,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-23 22:07:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 22:07:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:07:21,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340153526] [2020-10-23 22:07:21,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:07:21,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:07:21,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545883364] [2020-10-23 22:07:21,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:07:21,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:07:21,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:07:21,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:07:21,060 INFO L87 Difference]: Start difference. First operand 475 states and 589 transitions. Second operand 8 states. [2020-10-23 22:07:25,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:07:25,868 INFO L93 Difference]: Finished difference Result 2156 states and 3100 transitions. [2020-10-23 22:07:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 22:07:25,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2020-10-23 22:07:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:07:25,886 INFO L225 Difference]: With dead ends: 2156 [2020-10-23 22:07:25,886 INFO L226 Difference]: Without dead ends: 1733 [2020-10-23 22:07:25,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-23 22:07:25,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2020-10-23 22:07:26,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 933. [2020-10-23 22:07:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-10-23 22:07:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1198 transitions. [2020-10-23 22:07:26,248 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1198 transitions. Word has length 141 [2020-10-23 22:07:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:07:26,248 INFO L481 AbstractCegarLoop]: Abstraction has 933 states and 1198 transitions. [2020-10-23 22:07:26,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:07:26,249 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1198 transitions. [2020-10-23 22:07:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-23 22:07:26,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:07:26,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:07:26,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:07:26,252 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:07:26,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:07:26,252 INFO L82 PathProgramCache]: Analyzing trace with hash 2073728959, now seen corresponding path program 1 times [2020-10-23 22:07:26,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:07:26,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40623395] [2020-10-23 22:07:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:07:26,255 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:07:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:07:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-23 22:07:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:07:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-23 22:07:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 22:07:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-23 22:07:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 22:07:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 22:07:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:07:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-23 22:07:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 22:07:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:07:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:07:26,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40623395] [2020-10-23 22:07:26,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:07:26,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:07:26,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242713231] [2020-10-23 22:07:26,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:07:26,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:07:26,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:07:26,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:07:26,506 INFO L87 Difference]: Start difference. First operand 933 states and 1198 transitions. Second operand 7 states. [2020-10-23 22:07:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:07:30,165 INFO L93 Difference]: Finished difference Result 3777 states and 5420 transitions. [2020-10-23 22:07:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 22:07:30,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-23 22:07:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:07:30,188 INFO L225 Difference]: With dead ends: 3777 [2020-10-23 22:07:30,188 INFO L226 Difference]: Without dead ends: 2895 [2020-10-23 22:07:30,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-23 22:07:30,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-10-23 22:07:30,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1862. [2020-10-23 22:07:30,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1862 states. [2020-10-23 22:07:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2433 transitions. [2020-10-23 22:07:30,696 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2433 transitions. Word has length 146 [2020-10-23 22:07:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:07:30,697 INFO L481 AbstractCegarLoop]: Abstraction has 1862 states and 2433 transitions. [2020-10-23 22:07:30,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:07:30,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2433 transitions. [2020-10-23 22:07:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-23 22:07:30,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:07:30,703 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, 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] [2020-10-23 22:07:30,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:07:30,703 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:07:30,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:07:30,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1715045866, now seen corresponding path program 1 times [2020-10-23 22:07:30,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:07:30,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542583299] [2020-10-23 22:07:30,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:07:30,849 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-23 22:07:31,052 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-23 22:07:31,227 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-23 22:07:31,418 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-23 22:07:31,616 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:07:31,793 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-23 22:07:32,011 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-23 22:07:32,245 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-23 22:07:32,444 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-23 22:07:32,635 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-23 22:07:32,834 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-23 22:07:33,016 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-23 22:07:33,192 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:07:33,381 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-23 22:07:33,578 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-23 22:07:33,776 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-23 22:07:33,993 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-23 22:07:34,208 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-23 22:07:34,673 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:07:34,912 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:07:35,129 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:07:35,328 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:07:35,627 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109 [2020-10-23 22:07:36,148 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109 [2020-10-23 22:07:36,151 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:07:36,364 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:07:36,364 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:07:36,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 22:07:36,368 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:448) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:328) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 22:07:36,374 INFO L168 Benchmark]: Toolchain (without parser) took 29979.60 ms. Allocated memory was 161.5 MB in the beginning and 533.7 MB in the end (delta: 372.2 MB). Free memory was 137.1 MB in the beginning and 369.9 MB in the end (delta: -232.7 MB). Peak memory consumption was 140.2 MB. Max. memory is 8.0 GB. [2020-10-23 22:07:36,375 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 161.5 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:07:36,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.51 ms. Allocated memory is still 161.5 MB. Free memory was 136.5 MB in the beginning and 123.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 22:07:36,377 INFO L168 Benchmark]: Boogie Preprocessor took 58.46 ms. Allocated memory is still 161.5 MB. Free memory was 123.2 MB in the beginning and 120.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:07:36,378 INFO L168 Benchmark]: RCFGBuilder took 975.16 ms. Allocated memory is still 161.5 MB. Free memory was 120.9 MB in the beginning and 112.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2020-10-23 22:07:36,379 INFO L168 Benchmark]: TraceAbstraction took 28554.16 ms. Allocated memory was 161.5 MB in the beginning and 533.7 MB in the end (delta: 372.2 MB). Free memory was 112.0 MB in the beginning and 369.9 MB in the end (delta: -257.9 MB). Peak memory consumption was 114.9 MB. Max. memory is 8.0 GB. [2020-10-23 22:07:36,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 161.5 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 378.51 ms. Allocated memory is still 161.5 MB. Free memory was 136.5 MB in the beginning and 123.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.46 ms. Allocated memory is still 161.5 MB. Free memory was 123.2 MB in the beginning and 120.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 975.16 ms. Allocated memory is still 161.5 MB. Free memory was 120.9 MB in the beginning and 112.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 28554.16 ms. Allocated memory was 161.5 MB in the beginning and 533.7 MB in the end (delta: 372.2 MB). Free memory was 112.0 MB in the beginning and 369.9 MB in the end (delta: -257.9 MB). Peak memory consumption was 114.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:448) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...