/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 0.2.1-dev-36cd7be [2021-02-23 19:11:44,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 19:11:44,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 19:11:44,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 19:11:44,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 19:11:44,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 19:11:44,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 19:11:44,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 19:11:44,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 19:11:44,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 19:11:44,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 19:11:44,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 19:11:44,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 19:11:44,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 19:11:44,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 19:11:44,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 19:11:44,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 19:11:44,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 19:11:44,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 19:11:44,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 19:11:44,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 19:11:44,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 19:11:44,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 19:11:44,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 19:11:44,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 19:11:44,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 19:11:44,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 19:11:44,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 19:11:44,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 19:11:44,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 19:11:44,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 19:11:44,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 19:11:44,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 19:11:44,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 19:11:44,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 19:11:44,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 19:11:44,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 19:11:44,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 19:11:44,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 19:11:44,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 19:11:44,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 19:11:44,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 19:11:44,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 19:11:44,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 19:11:44,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 19:11:44,412 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 19:11:44,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 19:11:44,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 19:11:44,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 19:11:44,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 19:11:44,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 19:11:44,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 19:11:44,414 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 19:11:44,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 19:11:44,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 19:11:44,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 19:11:44,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 19:11:44,415 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 19:11:44,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 19:11:44,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 19:11:44,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:11:44,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 19:11:44,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 19:11:44,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 19:11:44,417 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 19:11:44,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 19:11:44,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 19:11:44,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 19:11:44,883 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 19:11:44,884 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 19:11:44,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c [2021-02-23 19:11:44,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac4ac220/2e05c0c504554eefb75bf411197c9444/FLAG75eb390cf [2021-02-23 19:11:45,799 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 19:11:45,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.02.cil.c [2021-02-23 19:11:45,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac4ac220/2e05c0c504554eefb75bf411197c9444/FLAG75eb390cf [2021-02-23 19:11:46,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac4ac220/2e05c0c504554eefb75bf411197c9444 [2021-02-23 19:11:46,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 19:11:46,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 19:11:46,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 19:11:46,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 19:11:46,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 19:11:46,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:11:46" (1/1) ... [2021-02-23 19:11:46,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58facb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:11:46, skipping insertion in model container [2021-02-23 19:11:46,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:11:46" (1/1) ... [2021-02-23 19:11:46,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 19:11:46,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 19:11:46,405 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.02.cil.c[401,414] [2021-02-23 19:11:46,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:11:46,502 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 19:11:46,518 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.02.cil.c[401,414] [2021-02-23 19:11:46,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:11:46,587 INFO L208 MainTranslator]: Completed translation [2021-02-23 19:11:46,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:11:46 WrapperNode [2021-02-23 19:11:46,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 19:11:46,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 19:11:46,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 19:11:46,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 19:11:46,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:11:46" (1/1) ... [2021-02-23 19:11:46,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:11:46" (1/1) ... [2021-02-23 19:11:46,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:11:46" (1/1) ... [2021-02-23 19:11:46,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:11:46" (1/1) ... [2021-02-23 19:11:46,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:11:46" (1/1) ... [2021-02-23 19:11:46,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:11:46" (1/1) ... [2021-02-23 19:11:46,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:11:46" (1/1) ... [2021-02-23 19:11:46,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 19:11:46,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 19:11:46,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 19:11:46,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 19:11:46,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:11:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:11:46,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 19:11:46,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 19:11:46,762 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 19:11:46,762 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-02-23 19:11:46,763 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2021-02-23 19:11:46,763 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2021-02-23 19:11:46,763 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2021-02-23 19:11:46,763 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2021-02-23 19:11:46,763 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2021-02-23 19:11:46,763 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2021-02-23 19:11:46,764 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-02-23 19:11:46,764 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2021-02-23 19:11:46,764 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-02-23 19:11:46,764 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2021-02-23 19:11:46,764 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-02-23 19:11:46,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-02-23 19:11:46,765 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-02-23 19:11:46,765 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-02-23 19:11:46,765 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2021-02-23 19:11:46,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2021-02-23 19:11:46,765 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2021-02-23 19:11:46,766 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2021-02-23 19:11:46,766 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2021-02-23 19:11:46,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 19:11:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 19:11:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 19:11:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 19:11:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 19:11:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 19:11:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-02-23 19:11:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2021-02-23 19:11:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2021-02-23 19:11:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2021-02-23 19:11:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-02-23 19:11:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure master [2021-02-23 19:11:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2021-02-23 19:11:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2021-02-23 19:11:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-02-23 19:11:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2021-02-23 19:11:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-02-23 19:11:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2021-02-23 19:11:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-02-23 19:11:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-02-23 19:11:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-02-23 19:11:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2021-02-23 19:11:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2021-02-23 19:11:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2021-02-23 19:11:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2021-02-23 19:11:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2021-02-23 19:11:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 19:11:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 19:11:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 19:11:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 19:11:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 19:11:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 19:11:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 19:11:47,679 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 19:11:47,679 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-23 19:11:47,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:11:47 BoogieIcfgContainer [2021-02-23 19:11:47,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 19:11:47,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 19:11:47,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 19:11:47,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 19:11:47,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:11:46" (1/3) ... [2021-02-23 19:11:47,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467c82fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:11:47, skipping insertion in model container [2021-02-23 19:11:47,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:11:46" (2/3) ... [2021-02-23 19:11:47,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467c82fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:11:47, skipping insertion in model container [2021-02-23 19:11:47,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:11:47" (3/3) ... [2021-02-23 19:11:47,700 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2021-02-23 19:11:47,709 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 19:11:47,718 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 19:11:47,744 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 19:11:47,786 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 19:11:47,786 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 19:11:47,786 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 19:11:47,786 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 19:11:47,787 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 19:11:47,787 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 19:11:47,787 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 19:11:47,787 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 19:11:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states. [2021-02-23 19:11:47,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-02-23 19:11:47,842 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:11:47,843 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] [2021-02-23 19:11:47,844 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:11:47,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:11:47,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1980759665, now seen corresponding path program 1 times [2021-02-23 19:11:47,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:11:47,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766662480] [2021-02-23 19:11:47,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:11:47,955 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:11:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:48,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,443 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-02-23 19:11:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:11:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-23 19:11:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:11:48,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 19:11:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 19:11:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 19:11:48,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 19:11:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-23 19:11:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 19:11:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 19:11:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:11:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-23 19:11:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 19:11:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:48,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:48,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:11:48,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766662480] [2021-02-23 19:11:48,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:11:48,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 19:11:48,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61383322] [2021-02-23 19:11:48,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 19:11:48,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:11:48,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 19:11:48,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 19:11:48,772 INFO L87 Difference]: Start difference. First operand 266 states. Second operand 8 states. [2021-02-23 19:11:51,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:11:51,209 INFO L93 Difference]: Finished difference Result 637 states and 851 transitions. [2021-02-23 19:11:51,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 19:11:51,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2021-02-23 19:11:51,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:11:51,233 INFO L225 Difference]: With dead ends: 637 [2021-02-23 19:11:51,233 INFO L226 Difference]: Without dead ends: 402 [2021-02-23 19:11:51,240 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 [2021-02-23 19:11:51,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-02-23 19:11:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 254. [2021-02-23 19:11:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-23 19:11:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 306 transitions. [2021-02-23 19:11:51,421 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 306 transitions. Word has length 135 [2021-02-23 19:11:51,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:11:51,422 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 306 transitions. [2021-02-23 19:11:51,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 19:11:51,422 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 306 transitions. [2021-02-23 19:11:51,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-02-23 19:11:51,427 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:11:51,427 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] [2021-02-23 19:11:51,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 19:11:51,428 INFO L428 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:11:51,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:11:51,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1885481489, now seen corresponding path program 1 times [2021-02-23 19:11:51,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:11:51,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017754180] [2021-02-23 19:11:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:11:51,434 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:11:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:51,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:51,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:51,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:11:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-23 19:11:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 19:11:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 19:11:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:51,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 19:11:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-23 19:11:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 19:11:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 19:11:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:11:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-23 19:11:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 19:11:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:51,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:51,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:51,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:11:51,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017754180] [2021-02-23 19:11:51,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:11:51,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 19:11:51,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17106119] [2021-02-23 19:11:51,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 19:11:51,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:11:51,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 19:11:51,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-23 19:11:51,841 INFO L87 Difference]: Start difference. First operand 254 states and 306 transitions. Second operand 8 states. [2021-02-23 19:11:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:11:54,788 INFO L93 Difference]: Finished difference Result 1088 states and 1490 transitions. [2021-02-23 19:11:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 19:11:54,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2021-02-23 19:11:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:11:54,801 INFO L225 Difference]: With dead ends: 1088 [2021-02-23 19:11:54,801 INFO L226 Difference]: Without dead ends: 887 [2021-02-23 19:11:54,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-02-23 19:11:54,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-02-23 19:11:55,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 485. [2021-02-23 19:11:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2021-02-23 19:11:55,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 605 transitions. [2021-02-23 19:11:55,056 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 605 transitions. Word has length 135 [2021-02-23 19:11:55,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:11:55,059 INFO L480 AbstractCegarLoop]: Abstraction has 485 states and 605 transitions. [2021-02-23 19:11:55,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 19:11:55,060 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 605 transitions. [2021-02-23 19:11:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-02-23 19:11:55,073 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:11:55,073 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] [2021-02-23 19:11:55,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 19:11:55,074 INFO L428 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:11:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:11:55,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2002287986, now seen corresponding path program 1 times [2021-02-23 19:11:55,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:11:55,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195930103] [2021-02-23 19:11:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:11:55,083 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:11:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:55,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:55,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:55,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:11:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:55,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-23 19:11:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 19:11:55,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 19:11:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:55,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 19:11:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 19:11:55,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 19:11:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:55,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-23 19:11:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:55,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 19:11:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:55,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 19:11:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:55,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:11:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:55,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-23 19:11:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:55,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 19:11:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:55,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:55,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:11:55,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195930103] [2021-02-23 19:11:55,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:11:55,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 19:11:55,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579525240] [2021-02-23 19:11:55,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 19:11:55,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:11:55,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 19:11:55,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 19:11:55,325 INFO L87 Difference]: Start difference. First operand 485 states and 605 transitions. Second operand 8 states. [2021-02-23 19:11:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:11:57,332 INFO L93 Difference]: Finished difference Result 1199 states and 1564 transitions. [2021-02-23 19:11:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 19:11:57,333 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2021-02-23 19:11:57,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:11:57,341 INFO L225 Difference]: With dead ends: 1199 [2021-02-23 19:11:57,341 INFO L226 Difference]: Without dead ends: 765 [2021-02-23 19:11:57,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-02-23 19:11:57,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-02-23 19:11:57,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 474. [2021-02-23 19:11:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2021-02-23 19:11:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 588 transitions. [2021-02-23 19:11:57,504 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 588 transitions. Word has length 136 [2021-02-23 19:11:57,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:11:57,505 INFO L480 AbstractCegarLoop]: Abstraction has 474 states and 588 transitions. [2021-02-23 19:11:57,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 19:11:57,505 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 588 transitions. [2021-02-23 19:11:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-02-23 19:11:57,508 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:11:57,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:11:57,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 19:11:57,509 INFO L428 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:11:57,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:11:57,510 INFO L82 PathProgramCache]: Analyzing trace with hash 617153439, now seen corresponding path program 1 times [2021-02-23 19:11:57,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:11:57,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521090111] [2021-02-23 19:11:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:11:57,513 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:11:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:57,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:57,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:57,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:11:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-23 19:11:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 19:11:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 19:11:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:57,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 19:11:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-23 19:11:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:11:57,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 19:11:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 19:11:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:11:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-23 19:11:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 19:11:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:11:57,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:11:57,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:11:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:11:57,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521090111] [2021-02-23 19:11:57,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:11:57,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 19:11:57,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142370383] [2021-02-23 19:11:57,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 19:11:57,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:11:57,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 19:11:57,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-23 19:11:57,753 INFO L87 Difference]: Start difference. First operand 474 states and 588 transitions. Second operand 8 states. [2021-02-23 19:12:01,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:12:01,243 INFO L93 Difference]: Finished difference Result 2153 states and 3097 transitions. [2021-02-23 19:12:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 19:12:01,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2021-02-23 19:12:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:12:01,259 INFO L225 Difference]: With dead ends: 2153 [2021-02-23 19:12:01,260 INFO L226 Difference]: Without dead ends: 1731 [2021-02-23 19:12:01,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-02-23 19:12:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2021-02-23 19:12:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 932. [2021-02-23 19:12:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2021-02-23 19:12:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1197 transitions. [2021-02-23 19:12:01,528 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1197 transitions. Word has length 140 [2021-02-23 19:12:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:12:01,528 INFO L480 AbstractCegarLoop]: Abstraction has 932 states and 1197 transitions. [2021-02-23 19:12:01,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 19:12:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1197 transitions. [2021-02-23 19:12:01,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-02-23 19:12:01,531 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:12:01,531 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] [2021-02-23 19:12:01,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 19:12:01,532 INFO L428 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:12:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:12:01,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1938792689, now seen corresponding path program 1 times [2021-02-23 19:12:01,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:12:01,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831767607] [2021-02-23 19:12:01,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:12:01,536 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:12:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:01,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:01,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:01,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:01,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:01,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:12:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:12:01,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-23 19:12:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 19:12:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 19:12:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 19:12:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-23 19:12:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 19:12:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 19:12:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 19:12:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-23 19:12:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-23 19:12:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:12:01,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:01,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:12:01,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831767607] [2021-02-23 19:12:01,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:12:01,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 19:12:01,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208644328] [2021-02-23 19:12:01,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 19:12:01,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:12:01,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 19:12:01,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 19:12:01,816 INFO L87 Difference]: Start difference. First operand 932 states and 1197 transitions. Second operand 7 states. [2021-02-23 19:12:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:12:04,879 INFO L93 Difference]: Finished difference Result 3775 states and 5418 transitions. [2021-02-23 19:12:04,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 19:12:04,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2021-02-23 19:12:04,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:12:04,906 INFO L225 Difference]: With dead ends: 3775 [2021-02-23 19:12:04,906 INFO L226 Difference]: Without dead ends: 2894 [2021-02-23 19:12:04,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-02-23 19:12:04,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2021-02-23 19:12:05,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1861. [2021-02-23 19:12:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1861 states. [2021-02-23 19:12:05,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2432 transitions. [2021-02-23 19:12:05,574 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2432 transitions. Word has length 145 [2021-02-23 19:12:05,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:12:05,575 INFO L480 AbstractCegarLoop]: Abstraction has 1861 states and 2432 transitions. [2021-02-23 19:12:05,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 19:12:05,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2432 transitions. [2021-02-23 19:12:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-02-23 19:12:05,581 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:12:05,581 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] [2021-02-23 19:12:05,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 19:12:05,582 INFO L428 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:12:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:12:05,582 INFO L82 PathProgramCache]: Analyzing trace with hash -769560739, now seen corresponding path program 1 times [2021-02-23 19:12:05,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:12:05,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663516087] [2021-02-23 19:12:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:12:05,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:05,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-02-23 19:12:06,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:06,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-02-23 19:12:06,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:06,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:06,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:12:06,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:12:06,056 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 19:12:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:12:06,098 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:12:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 19:12:06,134 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 19:12:06,215 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 19:12:06,215 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 19:12:06,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 19:12:06,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 07:12:06 BoogieIcfgContainer [2021-02-23 19:12:06,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 19:12:06,265 INFO L168 Benchmark]: Toolchain (without parser) took 20112.45 ms. Allocated memory was 151.0 MB in the beginning and 499.1 MB in the end (delta: 348.1 MB). Free memory was 127.6 MB in the beginning and 262.0 MB in the end (delta: -134.4 MB). Peak memory consumption was 214.8 MB. Max. memory is 8.0 GB. [2021-02-23 19:12:06,266 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 19:12:06,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.52 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 113.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 19:12:06,266 INFO L168 Benchmark]: Boogie Preprocessor took 60.53 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 110.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 19:12:06,267 INFO L168 Benchmark]: RCFGBuilder took 1030.62 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 98.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-23 19:12:06,268 INFO L168 Benchmark]: TraceAbstraction took 18576.69 ms. Allocated memory was 151.0 MB in the beginning and 499.1 MB in the end (delta: 348.1 MB). Free memory was 97.8 MB in the beginning and 262.0 MB in the end (delta: -164.2 MB). Peak memory consumption was 185.5 MB. Max. memory is 8.0 GB. [2021-02-23 19:12:06,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 421.52 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 113.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.53 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 110.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1030.62 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 98.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18576.69 ms. Allocated memory was 151.0 MB in the beginning and 499.1 MB in the end (delta: 348.1 MB). Free memory was 97.8 MB in the beginning and 262.0 MB in the end (delta: -164.2 MB). Peak memory consumption was 185.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int m_pc = 0; [L18] int t1_pc = 0; [L19] int t2_pc = 0; [L20] int m_st ; [L21] int t1_st ; [L22] int t2_st ; [L23] int m_i ; [L24] int t1_i ; [L25] int t2_i ; [L26] int M_E = 2; [L27] int T1_E = 2; [L28] int T2_E = 2; [L29] int E_1 = 2; [L30] int E_2 = 2; [L565] int __retres1 ; [L569] CALL init_model() [L479] m_i = 1 [L480] t1_i = 1 [L481] t2_i = 1 [L569] RET init_model() [L570] CALL start_simulation() [L506] int kernel_st ; [L507] int tmp ; [L508] int tmp___0 ; [L512] kernel_st = 0 [L513] FCALL update_channels() [L514] CALL init_threads() [L213] COND TRUE m_i == 1 [L214] m_st = 0 [L218] COND TRUE t1_i == 1 [L219] t1_st = 0 [L223] COND TRUE t2_i == 1 [L224] t2_st = 0 [L514] RET init_threads() [L515] CALL fire_delta_events() [L326] COND FALSE !(M_E == 0) [L331] COND FALSE !(T1_E == 0) [L336] COND FALSE !(T2_E == 0) [L341] COND FALSE !(E_1 == 0) [L346] COND FALSE !(E_2 == 0) [L515] RET fire_delta_events() [L516] CALL activate_threads() [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L395] CALL, EXPR is_master_triggered() [L145] int __retres1 ; [L148] COND FALSE !(m_pc == 1) [L158] __retres1 = 0 [L160] return (__retres1); [L395] RET, EXPR is_master_triggered() [L395] tmp = is_master_triggered() [L397] COND FALSE !(\read(tmp)) [L403] CALL, EXPR is_transmit1_triggered() [L164] int __retres1 ; [L167] COND FALSE !(t1_pc == 1) [L177] __retres1 = 0 [L179] return (__retres1); [L403] RET, EXPR is_transmit1_triggered() [L403] tmp___0 = is_transmit1_triggered() [L405] COND FALSE !(\read(tmp___0)) [L411] CALL, EXPR is_transmit2_triggered() [L183] int __retres1 ; [L186] COND FALSE !(t2_pc == 1) [L196] __retres1 = 0 [L198] return (__retres1); [L411] RET, EXPR is_transmit2_triggered() [L411] tmp___1 = is_transmit2_triggered() [L413] COND FALSE !(\read(tmp___1)) [L516] RET activate_threads() [L517] CALL reset_delta_events() [L359] COND FALSE !(M_E == 1) [L364] COND FALSE !(T1_E == 1) [L369] COND FALSE !(T2_E == 1) [L374] COND FALSE !(E_1 == 1) [L379] COND FALSE !(E_2 == 1) [L517] RET reset_delta_events() [L520] COND TRUE 1 [L523] kernel_st = 1 [L524] CALL eval() [L259] int tmp ; [L263] COND TRUE 1 [L266] CALL, EXPR exists_runnable_thread() [L233] int __retres1 ; [L236] COND TRUE m_st == 0 [L237] __retres1 = 1 [L254] return (__retres1); [L266] RET, EXPR exists_runnable_thread() [L266] tmp = exists_runnable_thread() [L268] COND TRUE \read(tmp) [L273] COND TRUE m_st == 0 [L274] int tmp_ndt_1; [L275] tmp_ndt_1 = __VERIFIER_nondet_int() [L276] COND FALSE !(\read(tmp_ndt_1)) [L287] COND TRUE t1_st == 0 [L288] int tmp_ndt_2; [L289] tmp_ndt_2 = __VERIFIER_nondet_int() [L290] COND FALSE !(\read(tmp_ndt_2)) [L301] COND TRUE t2_st == 0 [L302] int tmp_ndt_3; [L303] tmp_ndt_3 = __VERIFIER_nondet_int() [L304] COND TRUE \read(tmp_ndt_3) [L306] t2_st = 1 [L307] CALL transmit2() [L115] COND TRUE t2_pc == 0 [L126] COND TRUE 1 [L128] t2_pc = 1 [L129] t2_st = 2 [L307] RET transmit2() [L263] COND TRUE 1 [L266] CALL, EXPR exists_runnable_thread() [L233] int __retres1 ; [L236] COND TRUE m_st == 0 [L237] __retres1 = 1 [L254] return (__retres1); [L266] RET, EXPR exists_runnable_thread() [L266] tmp = exists_runnable_thread() [L268] COND TRUE \read(tmp) [L273] COND TRUE m_st == 0 [L274] int tmp_ndt_1; [L275] tmp_ndt_1 = __VERIFIER_nondet_int() [L276] COND FALSE !(\read(tmp_ndt_1)) [L287] COND TRUE t1_st == 0 [L288] int tmp_ndt_2; [L289] tmp_ndt_2 = __VERIFIER_nondet_int() [L290] COND FALSE !(\read(tmp_ndt_2)) [L301] COND TRUE t2_st == 0 [L302] int tmp_ndt_3; [L303] tmp_ndt_3 = __VERIFIER_nondet_int() [L304] COND TRUE \read(tmp_ndt_3) [L306] t2_st = 1 [L307] CALL transmit2() [L115] COND FALSE !(t2_pc == 0) [L118] COND TRUE t2_pc == 1 [L134] CALL error() [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 24 procedures, 269 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.4s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1290 SDtfs, 6602 SDslu, 314 SDs, 0 SdLazy, 5707 SolverSat, 2036 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1861occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...