/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/token_ring.01.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:06:02,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:06:02,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:06:02,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:06:02,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:06:02,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:06:02,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:06:02,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:06:02,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:06:02,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:06:02,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:06:02,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:06:02,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:06:02,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:06:02,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:06:02,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:06:02,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:06:02,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:06:02,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:06:02,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:06:02,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:06:02,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:06:02,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:06:02,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:06:02,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 22:06:02,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 22:06:02,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 22:06:02,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 22:06:02,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 22:06:02,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 22:06:02,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 22:06:02,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 22:06:02,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 22:06:02,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 22:06:02,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 22:06:02,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 22:06:02,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 22:06:02,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 22:06:02,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:06:02,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:06:02,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:06:02,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:06:02,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:06:02,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:06:02,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:06:02,687 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:06:02,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:06:02,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:06:02,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:06:02,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:06:02,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:06:02,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:06:02,690 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:06:02,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:06:02,690 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:06:02,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:06:02,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:06:02,691 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:06:02,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:06:02,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:06:02,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:06:02,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:06:02,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:06:02,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:06:02,692 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:06:03,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:06:03,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:06:03,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:06:03,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:06:03,148 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:06:03,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-10-23 22:06:03,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9d1c861e/32072c07e6134854923daf279943bfda/FLAGf3eba859a [2020-10-23 22:06:03,814 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:06:03,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.01.cil-1.c [2020-10-23 22:06:03,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9d1c861e/32072c07e6134854923daf279943bfda/FLAGf3eba859a [2020-10-23 22:06:04,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9d1c861e/32072c07e6134854923daf279943bfda [2020-10-23 22:06:04,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:06:04,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:06:04,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:06:04,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:06:04,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:06:04,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:06:04" (1/1) ... [2020-10-23 22:06:04,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a0fb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:04, skipping insertion in model container [2020-10-23 22:06:04,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:06:04" (1/1) ... [2020-10-23 22:06:04,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:06:04,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:06:04,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:06:04,448 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:06:04,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:06:04,544 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:06:04,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:04 WrapperNode [2020-10-23 22:06:04,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:06:04,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:06:04,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:06:04,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:06:04,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:04" (1/1) ... [2020-10-23 22:06:04,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:04" (1/1) ... [2020-10-23 22:06:04,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:04" (1/1) ... [2020-10-23 22:06:04,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:04" (1/1) ... [2020-10-23 22:06:04,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:04" (1/1) ... [2020-10-23 22:06:04,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:04" (1/1) ... [2020-10-23 22:06:04,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:04" (1/1) ... [2020-10-23 22:06:04,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:06:04,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:06:04,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:06:04,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:06:04,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:06:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:06:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:06:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:06:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-23 22:06:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-10-23 22:06:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-10-23 22:06:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-10-23 22:06:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-10-23 22:06:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-10-23 22:06:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-10-23 22:06:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-10-23 22:06:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-23 22:06:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-10-23 22:06:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-10-23 22:06:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-10-23 22:06:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-10-23 22:06:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-10-23 22:06:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-10-23 22:06:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-10-23 22:06:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-10-23 22:06:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-23 22:06:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:06:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:06:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:06:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:06:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:06:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-23 22:06:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-10-23 22:06:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-10-23 22:06:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-10-23 22:06:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:06:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-10-23 22:06:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-10-23 22:06:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-10-23 22:06:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-10-23 22:06:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-10-23 22:06:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-23 22:06:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-10-23 22:06:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-10-23 22:06:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-10-23 22:06:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-10-23 22:06:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-10-23 22:06:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-10-23 22:06:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-10-23 22:06:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-23 22:06:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:06:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:06:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:06:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:06:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:06:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:06:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:06:05,353 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:06:05,353 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 22:06:05,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:06:05 BoogieIcfgContainer [2020-10-23 22:06:05,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:06:05,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:06:05,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:06:05,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:06:05,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:06:04" (1/3) ... [2020-10-23 22:06:05,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420fb928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:06:05, skipping insertion in model container [2020-10-23 22:06:05,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:04" (2/3) ... [2020-10-23 22:06:05,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420fb928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:06:05, skipping insertion in model container [2020-10-23 22:06:05,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:06:05" (3/3) ... [2020-10-23 22:06:05,364 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2020-10-23 22:06:05,375 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:06:05,380 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:06:05,392 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:06:05,412 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:06:05,412 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:06:05,412 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:06:05,413 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:06:05,413 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:06:05,413 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:06:05,413 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:06:05,413 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:06:05,434 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states. [2020-10-23 22:06:05,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-23 22:06:05,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:05,452 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] [2020-10-23 22:06:05,452 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:05,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1506744400, now seen corresponding path program 1 times [2020-10-23 22:06:05,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:05,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715814607] [2020-10-23 22:06:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:05,543 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:06:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 22:06:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:06:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-23 22:06:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:06:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-23 22:06:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 22:06:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:06:06,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715814607] [2020-10-23 22:06:06,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:06,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:06:06,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977290776] [2020-10-23 22:06:06,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:06:06,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:06,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:06:06,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:06:06,315 INFO L87 Difference]: Start difference. First operand 230 states. Second operand 7 states. [2020-10-23 22:06:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:09,096 INFO L93 Difference]: Finished difference Result 786 states and 1048 transitions. [2020-10-23 22:06:09,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 22:06:09,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-23 22:06:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:09,144 INFO L225 Difference]: With dead ends: 786 [2020-10-23 22:06:09,146 INFO L226 Difference]: Without dead ends: 581 [2020-10-23 22:06:09,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-23 22:06:09,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-23 22:06:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 400. [2020-10-23 22:06:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-23 22:06:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 484 transitions. [2020-10-23 22:06:09,405 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 484 transitions. Word has length 116 [2020-10-23 22:06:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:09,406 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 484 transitions. [2020-10-23 22:06:09,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:06:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 484 transitions. [2020-10-23 22:06:09,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-23 22:06:09,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:09,413 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, 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] [2020-10-23 22:06:09,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:06:09,414 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:09,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:09,415 INFO L82 PathProgramCache]: Analyzing trace with hash -471057246, now seen corresponding path program 1 times [2020-10-23 22:06:09,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:09,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236693102] [2020-10-23 22:06:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:09,756 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-23 22:06:09,953 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:06:09,961 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:06:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 22:06:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:06:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-23 22:06:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:06:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-23 22:06:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 22:06:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 22:06:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 22:06:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 22:06:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-23 22:06:10,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236693102] [2020-10-23 22:06:10,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:10,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 22:06:10,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114942360] [2020-10-23 22:06:10,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 22:06:10,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:10,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 22:06:10,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:06:10,503 INFO L87 Difference]: Start difference. First operand 400 states and 484 transitions. Second operand 10 states. [2020-10-23 22:06:14,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:14,221 INFO L93 Difference]: Finished difference Result 1537 states and 2105 transitions. [2020-10-23 22:06:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 22:06:14,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-10-23 22:06:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:14,238 INFO L225 Difference]: With dead ends: 1537 [2020-10-23 22:06:14,238 INFO L226 Difference]: Without dead ends: 1185 [2020-10-23 22:06:14,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-10-23 22:06:14,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-10-23 22:06:14,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 763. [2020-10-23 22:06:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-10-23 22:06:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 961 transitions. [2020-10-23 22:06:14,450 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 961 transitions. Word has length 179 [2020-10-23 22:06:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:14,453 INFO L481 AbstractCegarLoop]: Abstraction has 763 states and 961 transitions. [2020-10-23 22:06:14,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 22:06:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 961 transitions. [2020-10-23 22:06:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-23 22:06:14,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:14,461 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, 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] [2020-10-23 22:06:14,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:06:14,461 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:14,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:14,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1422926590, now seen corresponding path program 1 times [2020-10-23 22:06:14,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:14,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647194594] [2020-10-23 22:06:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:14,757 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-23 22:06:14,908 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:06:14,910 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:06:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 22:06:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:06:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-23 22:06:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:06:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-23 22:06:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 22:06:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 22:06:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 22:06:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 22:06:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-23 22:06:15,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647194594] [2020-10-23 22:06:15,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:15,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 22:06:15,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137508457] [2020-10-23 22:06:15,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 22:06:15,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:15,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 22:06:15,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:06:15,184 INFO L87 Difference]: Start difference. First operand 763 states and 961 transitions. Second operand 9 states. [2020-10-23 22:06:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:17,534 INFO L93 Difference]: Finished difference Result 1788 states and 2319 transitions. [2020-10-23 22:06:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 22:06:17,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 179 [2020-10-23 22:06:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:17,545 INFO L225 Difference]: With dead ends: 1788 [2020-10-23 22:06:17,545 INFO L226 Difference]: Without dead ends: 1071 [2020-10-23 22:06:17,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-10-23 22:06:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2020-10-23 22:06:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 757. [2020-10-23 22:06:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2020-10-23 22:06:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 950 transitions. [2020-10-23 22:06:17,725 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 950 transitions. Word has length 179 [2020-10-23 22:06:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:17,731 INFO L481 AbstractCegarLoop]: Abstraction has 757 states and 950 transitions. [2020-10-23 22:06:17,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 22:06:17,731 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 950 transitions. [2020-10-23 22:06:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-23 22:06:17,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:17,736 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, 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] [2020-10-23 22:06:17,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:06:17,737 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:17,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:17,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1075147907, now seen corresponding path program 1 times [2020-10-23 22:06:17,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:17,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950625656] [2020-10-23 22:06:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:18,050 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-10-23 22:06:18,197 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:06:18,201 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:06:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 22:06:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:06:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-23 22:06:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:06:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-23 22:06:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 22:06:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 22:06:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 22:06:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 22:06:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-23 22:06:18,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950625656] [2020-10-23 22:06:18,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:18,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 22:06:18,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155867973] [2020-10-23 22:06:18,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 22:06:18,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:18,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 22:06:18,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-23 22:06:18,587 INFO L87 Difference]: Start difference. First operand 757 states and 950 transitions. Second operand 11 states. [2020-10-23 22:06:26,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:26,016 INFO L93 Difference]: Finished difference Result 4460 states and 6052 transitions. [2020-10-23 22:06:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-23 22:06:26,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 184 [2020-10-23 22:06:26,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:26,043 INFO L225 Difference]: With dead ends: 4460 [2020-10-23 22:06:26,044 INFO L226 Difference]: Without dead ends: 3748 [2020-10-23 22:06:26,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=566, Invalid=2296, Unknown=0, NotChecked=0, Total=2862 [2020-10-23 22:06:26,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2020-10-23 22:06:26,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 2960. [2020-10-23 22:06:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2960 states. [2020-10-23 22:06:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 3739 transitions. [2020-10-23 22:06:26,710 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 3739 transitions. Word has length 184 [2020-10-23 22:06:26,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:26,711 INFO L481 AbstractCegarLoop]: Abstraction has 2960 states and 3739 transitions. [2020-10-23 22:06:26,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 22:06:26,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 3739 transitions. [2020-10-23 22:06:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-23 22:06:26,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:26,720 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-23 22:06:26,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:06:26,720 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:26,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:26,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1911873357, now seen corresponding path program 1 times [2020-10-23 22:06:26,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:26,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546090653] [2020-10-23 22:06:26,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:26,815 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 22:06:26,820 INFO L168 Benchmark]: Toolchain (without parser) took 22673.15 ms. Allocated memory was 155.2 MB in the beginning and 475.0 MB in the end (delta: 319.8 MB). Free memory was 131.6 MB in the beginning and 175.0 MB in the end (delta: -43.4 MB). Peak memory consumption was 277.0 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:26,821 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:06:26,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.26 ms. Allocated memory is still 155.2 MB. Free memory was 131.1 MB in the beginning and 118.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:26,822 INFO L168 Benchmark]: Boogie Preprocessor took 90.38 ms. Allocated memory is still 155.2 MB. Free memory was 118.5 MB in the beginning and 116.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:26,823 INFO L168 Benchmark]: RCFGBuilder took 717.49 ms. Allocated memory is still 155.2 MB. Free memory was 116.4 MB in the beginning and 113.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:26,824 INFO L168 Benchmark]: TraceAbstraction took 21461.13 ms. Allocated memory was 155.2 MB in the beginning and 475.0 MB in the end (delta: 319.8 MB). Free memory was 113.1 MB in the beginning and 175.0 MB in the end (delta: -61.8 MB). Peak memory consumption was 259.0 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:26,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 390.26 ms. Allocated memory is still 155.2 MB. Free memory was 131.1 MB in the beginning and 118.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.38 ms. Allocated memory is still 155.2 MB. Free memory was 118.5 MB in the beginning and 116.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 717.49 ms. Allocated memory is still 155.2 MB. Free memory was 116.4 MB in the beginning and 113.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21461.13 ms. Allocated memory was 155.2 MB in the beginning and 475.0 MB in the end (delta: 319.8 MB). Free memory was 113.1 MB in the beginning and 175.0 MB in the end (delta: -61.8 MB). Peak memory consumption was 259.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...