/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.02.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 14:06:41,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 14:06:41,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 14:06:41,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 14:06:41,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 14:06:41,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 14:06:41,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 14:06:41,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 14:06:41,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 14:06:41,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 14:06:41,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 14:06:41,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 14:06:41,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 14:06:41,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 14:06:41,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 14:06:41,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 14:06:41,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 14:06:41,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 14:06:41,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 14:06:41,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 14:06:41,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 14:06:41,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 14:06:41,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 14:06:41,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 14:06:41,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 14:06:41,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 14:06:41,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 14:06:41,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 14:06:41,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 14:06:41,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-07 14:06:41,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 14:06:41,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 14:06:41,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 14:06:41,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 14:06:41,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 14:06:41,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 14:06:41,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 14:06:41,628 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 14:06:41,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 14:06:41,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 14:06:41,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 14:06:41,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 14:06:41,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 14:06:41,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 14:06:41,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 14:06:41,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 14:06:41,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 14:06:41,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 14:06:41,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 14:06:41,631 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 14:06:41,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 14:06:41,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 14:06:41,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:06:41,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 14:06:41,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 14:06:41,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 14:06:41,632 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 14:06:41,969 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 14:06:41,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 14:06:41,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 14:06:41,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 14:06:41,993 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 14:06:41,994 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-07-07 14:06:42,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dc6bee57/7f091ebad2d244a4ace085582c8c46ee/FLAG582435072 [2020-07-07 14:06:42,664 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 14:06:42,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-07-07 14:06:42,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dc6bee57/7f091ebad2d244a4ace085582c8c46ee/FLAG582435072 [2020-07-07 14:06:42,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dc6bee57/7f091ebad2d244a4ace085582c8c46ee [2020-07-07 14:06:42,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 14:06:42,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 14:06:42,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 14:06:42,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 14:06:42,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 14:06:42,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:06:42" (1/1) ... [2020-07-07 14:06:42,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381793df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:42, skipping insertion in model container [2020-07-07 14:06:42,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:06:42" (1/1) ... [2020-07-07 14:06:42,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 14:06:43,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 14:06:43,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:06:43,304 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 14:06:43,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:06:43,477 INFO L208 MainTranslator]: Completed translation [2020-07-07 14:06:43,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:43 WrapperNode [2020-07-07 14:06:43,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 14:06:43,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 14:06:43,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 14:06:43,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 14:06:43,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:43" (1/1) ... [2020-07-07 14:06:43,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:43" (1/1) ... [2020-07-07 14:06:43,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:43" (1/1) ... [2020-07-07 14:06:43,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:43" (1/1) ... [2020-07-07 14:06:43,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:43" (1/1) ... [2020-07-07 14:06:43,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:43" (1/1) ... [2020-07-07 14:06:43,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:43" (1/1) ... [2020-07-07 14:06:43,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 14:06:43,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 14:06:43,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 14:06:43,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 14:06:43,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:43" (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 [2020-07-07 14:06:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 14:06:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 14:06:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-07-07 14:06:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-07-07 14:06:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-07-07 14:06:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-07-07 14:06:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-07-07 14:06:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-07-07 14:06:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-07-07 14:06:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-07-07 14:06:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-07-07 14:06:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-07-07 14:06:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-07-07 14:06:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-07-07 14:06:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-07-07 14:06:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-07-07 14:06:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-07-07 14:06:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-07-07 14:06:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-07-07 14:06:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-07-07 14:06:43,634 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-07-07 14:06:43,634 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-07-07 14:06:43,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 14:06:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 14:06:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-07-07 14:06:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-07-07 14:06:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-07-07 14:06:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-07-07 14:06:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-07-07 14:06:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 14:06:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-07-07 14:06:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-07-07 14:06:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-07-07 14:06:43,637 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-07-07 14:06:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-07-07 14:06:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-07-07 14:06:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-07-07 14:06:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-07-07 14:06:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-07-07 14:06:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-07-07 14:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-07-07 14:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-07-07 14:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-07-07 14:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-07-07 14:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-07-07 14:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 14:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 14:06:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 14:06:44,497 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 14:06:44,497 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 14:06:44,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:06:44 BoogieIcfgContainer [2020-07-07 14:06:44,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 14:06:44,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 14:06:44,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 14:06:44,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 14:06:44,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 02:06:42" (1/3) ... [2020-07-07 14:06:44,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7709d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:06:44, skipping insertion in model container [2020-07-07 14:06:44,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:06:43" (2/3) ... [2020-07-07 14:06:44,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7709d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:06:44, skipping insertion in model container [2020-07-07 14:06:44,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:06:44" (3/3) ... [2020-07-07 14:06:44,518 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.02.cil-2.c [2020-07-07 14:06:44,530 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 14:06:44,541 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 14:06:44,559 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 14:06:44,587 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 14:06:44,587 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 14:06:44,587 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 14:06:44,588 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 14:06:44,588 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 14:06:44,588 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 14:06:44,588 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 14:06:44,588 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 14:06:44,616 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2020-07-07 14:06:44,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-07 14:06:44,640 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:44,641 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] [2020-07-07 14:06:44,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:44,650 INFO L82 PathProgramCache]: Analyzing trace with hash 356343399, now seen corresponding path program 1 times [2020-07-07 14:06:44,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:44,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978330577] [2020-07-07 14:06:44,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:06:45,484 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:45,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978330577] [2020-07-07 14:06:45,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:45,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 14:06:45,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234255326] [2020-07-07 14:06:45,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 14:06:45,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:45,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 14:06:45,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-07 14:06:45,520 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 7 states. [2020-07-07 14:06:48,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:48,847 INFO L93 Difference]: Finished difference Result 1032 states and 1419 transitions. [2020-07-07 14:06:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 14:06:48,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-07-07 14:06:48,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:48,907 INFO L225 Difference]: With dead ends: 1032 [2020-07-07 14:06:48,907 INFO L226 Difference]: Without dead ends: 774 [2020-07-07 14:06:48,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-07-07 14:06:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-07-07 14:06:49,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 562. [2020-07-07 14:06:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-07-07 14:06:49,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 711 transitions. [2020-07-07 14:06:49,163 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 711 transitions. Word has length 134 [2020-07-07 14:06:49,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:49,165 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 711 transitions. [2020-07-07 14:06:49,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 14:06:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 711 transitions. [2020-07-07 14:06:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-07-07 14:06:49,175 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:49,176 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, 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] [2020-07-07 14:06:49,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 14:06:49,177 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:49,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:49,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1876371016, now seen corresponding path program 1 times [2020-07-07 14:06:49,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:49,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941088454] [2020-07-07 14:06:49,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-07 14:06:49,741 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:49,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941088454] [2020-07-07 14:06:49,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:49,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 14:06:49,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101886492] [2020-07-07 14:06:49,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 14:06:49,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:49,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 14:06:49,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-07 14:06:49,746 INFO L87 Difference]: Start difference. First operand 562 states and 711 transitions. Second operand 9 states. [2020-07-07 14:06:54,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:54,235 INFO L93 Difference]: Finished difference Result 2088 states and 2801 transitions. [2020-07-07 14:06:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 14:06:54,236 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2020-07-07 14:06:54,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:54,251 INFO L225 Difference]: With dead ends: 2088 [2020-07-07 14:06:54,251 INFO L226 Difference]: Without dead ends: 1575 [2020-07-07 14:06:54,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-07-07 14:06:54,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2020-07-07 14:06:54,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1143. [2020-07-07 14:06:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-07-07 14:06:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1495 transitions. [2020-07-07 14:06:54,479 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1495 transitions. Word has length 213 [2020-07-07 14:06:54,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:54,481 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1495 transitions. [2020-07-07 14:06:54,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 14:06:54,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1495 transitions. [2020-07-07 14:06:54,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-07-07 14:06:54,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:54,498 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, 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, 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, 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] [2020-07-07 14:06:54,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 14:06:54,499 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:54,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1783560722, now seen corresponding path program 1 times [2020-07-07 14:06:54,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:54,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738818291] [2020-07-07 14:06:54,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-07-07 14:06:55,166 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:55,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738818291] [2020-07-07 14:06:55,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:55,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:06:55,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129105284] [2020-07-07 14:06:55,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:06:55,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:55,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:06:55,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:06:55,170 INFO L87 Difference]: Start difference. First operand 1143 states and 1495 transitions. Second operand 10 states. [2020-07-07 14:06:57,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:06:57,793 INFO L93 Difference]: Finished difference Result 2749 states and 3637 transitions. [2020-07-07 14:06:57,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 14:06:57,794 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 351 [2020-07-07 14:06:57,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:06:57,815 INFO L225 Difference]: With dead ends: 2749 [2020-07-07 14:06:57,816 INFO L226 Difference]: Without dead ends: 1653 [2020-07-07 14:06:57,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2020-07-07 14:06:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-07-07 14:06:58,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1131. [2020-07-07 14:06:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1131 states. [2020-07-07 14:06:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1476 transitions. [2020-07-07 14:06:58,093 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1476 transitions. Word has length 351 [2020-07-07 14:06:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:06:58,094 INFO L479 AbstractCegarLoop]: Abstraction has 1131 states and 1476 transitions. [2020-07-07 14:06:58,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:06:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1476 transitions. [2020-07-07 14:06:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-07-07 14:06:58,106 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:06:58,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:06:58,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 14:06:58,108 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:06:58,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:06:58,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1786251854, now seen corresponding path program 1 times [2020-07-07 14:06:58,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:06:58,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988228494] [2020-07-07 14:06:58,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:06:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:06:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-07 14:06:58,678 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:06:58,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988228494] [2020-07-07 14:06:58,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:06:58,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 14:06:58,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320498678] [2020-07-07 14:06:58,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 14:06:58,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:06:58,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 14:06:58,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:06:58,681 INFO L87 Difference]: Start difference. First operand 1131 states and 1476 transitions. Second operand 12 states. [2020-07-07 14:07:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:01,723 INFO L93 Difference]: Finished difference Result 2759 states and 3707 transitions. [2020-07-07 14:07:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 14:07:01,724 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 275 [2020-07-07 14:07:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:01,736 INFO L225 Difference]: With dead ends: 2759 [2020-07-07 14:07:01,736 INFO L226 Difference]: Without dead ends: 1334 [2020-07-07 14:07:01,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-07-07 14:07:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-07-07 14:07:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 924. [2020-07-07 14:07:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-07-07 14:07:01,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1166 transitions. [2020-07-07 14:07:01,892 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1166 transitions. Word has length 275 [2020-07-07 14:07:01,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:01,893 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1166 transitions. [2020-07-07 14:07:01,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 14:07:01,893 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1166 transitions. [2020-07-07 14:07:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-07-07 14:07:01,900 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:01,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:01,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 14:07:01,901 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:01,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:01,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1759472638, now seen corresponding path program 2 times [2020-07-07 14:07:01,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:01,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699204201] [2020-07-07 14:07:01,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:02,649 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:02,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699204201] [2020-07-07 14:07:02,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:02,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:07:02,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103173268] [2020-07-07 14:07:02,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:07:02,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:02,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:07:02,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:07:02,654 INFO L87 Difference]: Start difference. First operand 924 states and 1166 transitions. Second operand 10 states. [2020-07-07 14:07:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:07,142 INFO L93 Difference]: Finished difference Result 3431 states and 4638 transitions. [2020-07-07 14:07:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 14:07:07,142 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 274 [2020-07-07 14:07:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:07,163 INFO L225 Difference]: With dead ends: 3431 [2020-07-07 14:07:07,163 INFO L226 Difference]: Without dead ends: 2554 [2020-07-07 14:07:07,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 59 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2020-07-07 14:07:07,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2020-07-07 14:07:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1811. [2020-07-07 14:07:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2020-07-07 14:07:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2279 transitions. [2020-07-07 14:07:07,455 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2279 transitions. Word has length 274 [2020-07-07 14:07:07,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:07,456 INFO L479 AbstractCegarLoop]: Abstraction has 1811 states and 2279 transitions. [2020-07-07 14:07:07,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:07:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2279 transitions. [2020-07-07 14:07:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-07-07 14:07:07,465 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:07,465 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:07,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 14:07:07,466 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:07,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:07,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1933431879, now seen corresponding path program 1 times [2020-07-07 14:07:07,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:07,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935274105] [2020-07-07 14:07:07,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:08,077 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:08,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935274105] [2020-07-07 14:07:08,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:08,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:07:08,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912108741] [2020-07-07 14:07:08,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:07:08,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:08,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:07:08,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:07:08,082 INFO L87 Difference]: Start difference. First operand 1811 states and 2279 transitions. Second operand 10 states. [2020-07-07 14:07:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:12,464 INFO L93 Difference]: Finished difference Result 6312 states and 8446 transitions. [2020-07-07 14:07:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 14:07:12,465 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 274 [2020-07-07 14:07:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:12,495 INFO L225 Difference]: With dead ends: 6312 [2020-07-07 14:07:12,496 INFO L226 Difference]: Without dead ends: 4548 [2020-07-07 14:07:12,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2020-07-07 14:07:12,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2020-07-07 14:07:13,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 3449. [2020-07-07 14:07:13,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3449 states. [2020-07-07 14:07:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4307 transitions. [2020-07-07 14:07:13,191 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4307 transitions. Word has length 274 [2020-07-07 14:07:13,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:13,192 INFO L479 AbstractCegarLoop]: Abstraction has 3449 states and 4307 transitions. [2020-07-07 14:07:13,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:07:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4307 transitions. [2020-07-07 14:07:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-07-07 14:07:13,208 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:13,209 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:13,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 14:07:13,209 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:13,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:13,210 INFO L82 PathProgramCache]: Analyzing trace with hash 980135473, now seen corresponding path program 1 times [2020-07-07 14:07:13,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:13,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792065722] [2020-07-07 14:07:13,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-07-07 14:07:13,806 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:13,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792065722] [2020-07-07 14:07:13,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:13,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:07:13,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001628323] [2020-07-07 14:07:13,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:07:13,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:13,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:07:13,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:07:13,810 INFO L87 Difference]: Start difference. First operand 3449 states and 4307 transitions. Second operand 10 states. [2020-07-07 14:07:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:18,307 INFO L93 Difference]: Finished difference Result 8271 states and 10720 transitions. [2020-07-07 14:07:18,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 14:07:18,308 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 418 [2020-07-07 14:07:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:18,355 INFO L225 Difference]: With dead ends: 8271 [2020-07-07 14:07:18,355 INFO L226 Difference]: Without dead ends: 4870 [2020-07-07 14:07:18,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=294, Invalid=762, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 14:07:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2020-07-07 14:07:19,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 3453. [2020-07-07 14:07:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3453 states. [2020-07-07 14:07:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 4283 transitions. [2020-07-07 14:07:19,734 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 4283 transitions. Word has length 418 [2020-07-07 14:07:19,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:19,735 INFO L479 AbstractCegarLoop]: Abstraction has 3453 states and 4283 transitions. [2020-07-07 14:07:19,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:07:19,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 4283 transitions. [2020-07-07 14:07:19,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-07-07 14:07:19,751 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:19,752 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-07-07 14:07:19,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 14:07:19,752 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:19,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:19,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1319590809, now seen corresponding path program 1 times [2020-07-07 14:07:19,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:19,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938858086] [2020-07-07 14:07:19,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:20,346 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:20,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938858086] [2020-07-07 14:07:20,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:20,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 14:07:20,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461644839] [2020-07-07 14:07:20,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 14:07:20,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:20,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 14:07:20,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-07-07 14:07:20,350 INFO L87 Difference]: Start difference. First operand 3453 states and 4283 transitions. Second operand 11 states. [2020-07-07 14:07:28,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:28,049 INFO L93 Difference]: Finished difference Result 13187 states and 18026 transitions. [2020-07-07 14:07:28,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-07 14:07:28,050 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 304 [2020-07-07 14:07:28,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:28,120 INFO L225 Difference]: With dead ends: 13187 [2020-07-07 14:07:28,120 INFO L226 Difference]: Without dead ends: 9782 [2020-07-07 14:07:28,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2020-07-07 14:07:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9782 states. [2020-07-07 14:07:29,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9782 to 7023. [2020-07-07 14:07:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-07-07 14:07:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 8851 transitions. [2020-07-07 14:07:29,519 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 8851 transitions. Word has length 304 [2020-07-07 14:07:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:29,520 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 8851 transitions. [2020-07-07 14:07:29,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 14:07:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 8851 transitions. [2020-07-07 14:07:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-07-07 14:07:29,541 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:29,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-07-07 14:07:29,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 14:07:29,542 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:29,542 INFO L82 PathProgramCache]: Analyzing trace with hash 759375311, now seen corresponding path program 1 times [2020-07-07 14:07:29,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:29,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746231701] [2020-07-07 14:07:29,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:29,915 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:29,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746231701] [2020-07-07 14:07:29,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:29,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:07:29,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316063024] [2020-07-07 14:07:29,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:07:29,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:29,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:07:29,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:07:29,925 INFO L87 Difference]: Start difference. First operand 7023 states and 8851 transitions. Second operand 10 states. [2020-07-07 14:07:33,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:33,643 INFO L93 Difference]: Finished difference Result 14183 states and 18206 transitions. [2020-07-07 14:07:33,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 14:07:33,644 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 305 [2020-07-07 14:07:33,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:33,683 INFO L225 Difference]: With dead ends: 14183 [2020-07-07 14:07:33,683 INFO L226 Difference]: Without dead ends: 7206 [2020-07-07 14:07:33,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-07-07 14:07:33,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7206 states. [2020-07-07 14:07:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7206 to 5295. [2020-07-07 14:07:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5295 states. [2020-07-07 14:07:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 6650 transitions. [2020-07-07 14:07:34,524 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 6650 transitions. Word has length 305 [2020-07-07 14:07:34,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:34,525 INFO L479 AbstractCegarLoop]: Abstraction has 5295 states and 6650 transitions. [2020-07-07 14:07:34,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:07:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 6650 transitions. [2020-07-07 14:07:34,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-07-07 14:07:34,539 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:34,540 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:07:34,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 14:07:34,540 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:34,541 INFO L82 PathProgramCache]: Analyzing trace with hash 551470748, now seen corresponding path program 1 times [2020-07-07 14:07:34,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:34,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883586867] [2020-07-07 14:07:34,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:35,015 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:35,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883586867] [2020-07-07 14:07:35,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:35,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 14:07:35,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125516293] [2020-07-07 14:07:35,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 14:07:35,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:35,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 14:07:35,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-07-07 14:07:35,021 INFO L87 Difference]: Start difference. First operand 5295 states and 6650 transitions. Second operand 14 states. [2020-07-07 14:07:43,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:43,190 INFO L93 Difference]: Finished difference Result 14043 states and 18694 transitions. [2020-07-07 14:07:43,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-07 14:07:43,190 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 310 [2020-07-07 14:07:43,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:43,243 INFO L225 Difference]: With dead ends: 14043 [2020-07-07 14:07:43,243 INFO L226 Difference]: Without dead ends: 8795 [2020-07-07 14:07:43,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=919, Invalid=2863, Unknown=0, NotChecked=0, Total=3782 [2020-07-07 14:07:43,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8795 states. [2020-07-07 14:07:44,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8795 to 6474. [2020-07-07 14:07:44,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6474 states. [2020-07-07 14:07:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 7995 transitions. [2020-07-07 14:07:44,305 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 7995 transitions. Word has length 310 [2020-07-07 14:07:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:44,306 INFO L479 AbstractCegarLoop]: Abstraction has 6474 states and 7995 transitions. [2020-07-07 14:07:44,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 14:07:44,306 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 7995 transitions. [2020-07-07 14:07:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-07-07 14:07:44,318 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:44,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-07-07 14:07:44,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 14:07:44,319 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:44,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1101833629, now seen corresponding path program 1 times [2020-07-07 14:07:44,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:44,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876068142] [2020-07-07 14:07:44,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:44,721 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:44,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876068142] [2020-07-07 14:07:44,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:44,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 14:07:44,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338655178] [2020-07-07 14:07:44,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 14:07:44,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:44,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 14:07:44,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-07 14:07:44,726 INFO L87 Difference]: Start difference. First operand 6474 states and 7995 transitions. Second operand 9 states. [2020-07-07 14:07:51,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:07:51,218 INFO L93 Difference]: Finished difference Result 21783 states and 28598 transitions. [2020-07-07 14:07:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 14:07:51,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 314 [2020-07-07 14:07:51,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:07:51,315 INFO L225 Difference]: With dead ends: 21783 [2020-07-07 14:07:51,316 INFO L226 Difference]: Without dead ends: 15358 [2020-07-07 14:07:51,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-07-07 14:07:51,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15358 states. [2020-07-07 14:07:53,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15358 to 12334. [2020-07-07 14:07:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12334 states. [2020-07-07 14:07:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12334 states to 12334 states and 15601 transitions. [2020-07-07 14:07:53,634 INFO L78 Accepts]: Start accepts. Automaton has 12334 states and 15601 transitions. Word has length 314 [2020-07-07 14:07:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:07:53,635 INFO L479 AbstractCegarLoop]: Abstraction has 12334 states and 15601 transitions. [2020-07-07 14:07:53,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 14:07:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand 12334 states and 15601 transitions. [2020-07-07 14:07:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-07-07 14:07:53,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:07:53,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-07-07 14:07:53,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 14:07:53,658 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:07:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:07:53,658 INFO L82 PathProgramCache]: Analyzing trace with hash 489071275, now seen corresponding path program 1 times [2020-07-07 14:07:53,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:07:53,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581376023] [2020-07-07 14:07:53,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:07:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:07:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:07:54,079 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:07:54,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581376023] [2020-07-07 14:07:54,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:07:54,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 14:07:54,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629473839] [2020-07-07 14:07:54,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 14:07:54,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:07:54,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 14:07:54,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:07:54,082 INFO L87 Difference]: Start difference. First operand 12334 states and 15601 transitions. Second operand 12 states. [2020-07-07 14:08:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:00,571 INFO L93 Difference]: Finished difference Result 25338 states and 33694 transitions. [2020-07-07 14:08:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 14:08:00,572 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 320 [2020-07-07 14:08:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:00,680 INFO L225 Difference]: With dead ends: 25338 [2020-07-07 14:08:00,681 INFO L226 Difference]: Without dead ends: 15813 [2020-07-07 14:08:00,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-07-07 14:08:00,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15813 states. [2020-07-07 14:08:03,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15813 to 12552. [2020-07-07 14:08:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12552 states. [2020-07-07 14:08:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 15503 transitions. [2020-07-07 14:08:03,127 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 15503 transitions. Word has length 320 [2020-07-07 14:08:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:03,129 INFO L479 AbstractCegarLoop]: Abstraction has 12552 states and 15503 transitions. [2020-07-07 14:08:03,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 14:08:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 15503 transitions. [2020-07-07 14:08:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-07-07 14:08:03,151 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:03,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-07-07 14:08:03,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 14:08:03,152 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:03,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1643690248, now seen corresponding path program 1 times [2020-07-07 14:08:03,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:03,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463775932] [2020-07-07 14:08:03,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:08:03,523 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:03,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463775932] [2020-07-07 14:08:03,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:03,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:08:03,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899705444] [2020-07-07 14:08:03,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:08:03,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:03,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:08:03,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:08:03,527 INFO L87 Difference]: Start difference. First operand 12552 states and 15503 transitions. Second operand 10 states. [2020-07-07 14:08:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:11,175 INFO L93 Difference]: Finished difference Result 33379 states and 43496 transitions. [2020-07-07 14:08:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 14:08:11,176 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 320 [2020-07-07 14:08:11,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:11,281 INFO L225 Difference]: With dead ends: 33379 [2020-07-07 14:08:11,281 INFO L226 Difference]: Without dead ends: 20883 [2020-07-07 14:08:11,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2020-07-07 14:08:11,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20883 states. [2020-07-07 14:08:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20883 to 17158. [2020-07-07 14:08:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17158 states. [2020-07-07 14:08:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17158 states to 17158 states and 20870 transitions. [2020-07-07 14:08:14,781 INFO L78 Accepts]: Start accepts. Automaton has 17158 states and 20870 transitions. Word has length 320 [2020-07-07 14:08:14,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:14,782 INFO L479 AbstractCegarLoop]: Abstraction has 17158 states and 20870 transitions. [2020-07-07 14:08:14,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:08:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 17158 states and 20870 transitions. [2020-07-07 14:08:14,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-07 14:08:14,810 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:14,811 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:14,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 14:08:14,811 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:14,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:14,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2057177026, now seen corresponding path program 1 times [2020-07-07 14:08:14,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:14,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074425807] [2020-07-07 14:08:14,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-07 14:08:15,222 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:15,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074425807] [2020-07-07 14:08:15,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:15,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 14:08:15,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44296643] [2020-07-07 14:08:15,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 14:08:15,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:15,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 14:08:15,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:08:15,227 INFO L87 Difference]: Start difference. First operand 17158 states and 20870 transitions. Second operand 12 states. [2020-07-07 14:08:19,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:19,922 INFO L93 Difference]: Finished difference Result 27583 states and 33394 transitions. [2020-07-07 14:08:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 14:08:19,923 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 335 [2020-07-07 14:08:19,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:19,976 INFO L225 Difference]: With dead ends: 27583 [2020-07-07 14:08:19,976 INFO L226 Difference]: Without dead ends: 10489 [2020-07-07 14:08:20,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2020-07-07 14:08:20,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10489 states. [2020-07-07 14:08:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10489 to 8415. [2020-07-07 14:08:21,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8415 states. [2020-07-07 14:08:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8415 states to 8415 states and 9696 transitions. [2020-07-07 14:08:21,509 INFO L78 Accepts]: Start accepts. Automaton has 8415 states and 9696 transitions. Word has length 335 [2020-07-07 14:08:21,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:21,510 INFO L479 AbstractCegarLoop]: Abstraction has 8415 states and 9696 transitions. [2020-07-07 14:08:21,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 14:08:21,511 INFO L276 IsEmpty]: Start isEmpty. Operand 8415 states and 9696 transitions. [2020-07-07 14:08:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-07-07 14:08:21,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:21,523 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:21,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 14:08:21,523 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:21,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:21,523 INFO L82 PathProgramCache]: Analyzing trace with hash 347748049, now seen corresponding path program 1 times [2020-07-07 14:08:21,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:21,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613364491] [2020-07-07 14:08:21,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-07 14:08:22,179 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:22,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613364491] [2020-07-07 14:08:22,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:22,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 14:08:22,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354171601] [2020-07-07 14:08:22,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 14:08:22,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:22,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 14:08:22,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:08:22,182 INFO L87 Difference]: Start difference. First operand 8415 states and 9696 transitions. Second operand 12 states. [2020-07-07 14:08:25,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:25,642 INFO L93 Difference]: Finished difference Result 12968 states and 14995 transitions. [2020-07-07 14:08:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 14:08:25,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 345 [2020-07-07 14:08:25,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:25,662 INFO L225 Difference]: With dead ends: 12968 [2020-07-07 14:08:25,662 INFO L226 Difference]: Without dead ends: 3861 [2020-07-07 14:08:25,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-07-07 14:08:25,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2020-07-07 14:08:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3226. [2020-07-07 14:08:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3226 states. [2020-07-07 14:08:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 3637 transitions. [2020-07-07 14:08:26,231 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 3637 transitions. Word has length 345 [2020-07-07 14:08:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:26,232 INFO L479 AbstractCegarLoop]: Abstraction has 3226 states and 3637 transitions. [2020-07-07 14:08:26,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 14:08:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 3637 transitions. [2020-07-07 14:08:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-07-07 14:08:26,238 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:26,239 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:26,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 14:08:26,239 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:26,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1543503057, now seen corresponding path program 1 times [2020-07-07 14:08:26,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:26,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303067489] [2020-07-07 14:08:26,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-07 14:08:26,967 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:26,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303067489] [2020-07-07 14:08:26,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:26,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 14:08:26,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867251746] [2020-07-07 14:08:26,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 14:08:26,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:26,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 14:08:26,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-07-07 14:08:26,970 INFO L87 Difference]: Start difference. First operand 3226 states and 3637 transitions. Second operand 14 states. [2020-07-07 14:08:30,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:30,315 INFO L93 Difference]: Finished difference Result 6713 states and 7928 transitions. [2020-07-07 14:08:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 14:08:30,316 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 502 [2020-07-07 14:08:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:30,333 INFO L225 Difference]: With dead ends: 6713 [2020-07-07 14:08:30,334 INFO L226 Difference]: Without dead ends: 3541 [2020-07-07 14:08:30,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-07-07 14:08:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2020-07-07 14:08:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3039. [2020-07-07 14:08:30,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3039 states. [2020-07-07 14:08:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 3425 transitions. [2020-07-07 14:08:30,902 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 3425 transitions. Word has length 502 [2020-07-07 14:08:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:30,903 INFO L479 AbstractCegarLoop]: Abstraction has 3039 states and 3425 transitions. [2020-07-07 14:08:30,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 14:08:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 3425 transitions. [2020-07-07 14:08:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-07-07 14:08:30,908 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:30,909 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:30,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 14:08:30,909 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:30,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:30,909 INFO L82 PathProgramCache]: Analyzing trace with hash 581444211, now seen corresponding path program 1 times [2020-07-07 14:08:30,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:30,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640183561] [2020-07-07 14:08:30,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:08:31,582 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:31,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640183561] [2020-07-07 14:08:31,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:31,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 14:08:31,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873574065] [2020-07-07 14:08:31,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 14:08:31,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:31,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 14:08:31,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-07-07 14:08:31,584 INFO L87 Difference]: Start difference. First operand 3039 states and 3425 transitions. Second operand 14 states. [2020-07-07 14:08:42,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:42,242 INFO L93 Difference]: Finished difference Result 10848 states and 12572 transitions. [2020-07-07 14:08:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-07-07 14:08:42,243 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 388 [2020-07-07 14:08:42,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:42,275 INFO L225 Difference]: With dead ends: 10848 [2020-07-07 14:08:42,275 INFO L226 Difference]: Without dead ends: 8889 [2020-07-07 14:08:42,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=538, Invalid=2542, Unknown=0, NotChecked=0, Total=3080 [2020-07-07 14:08:42,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2020-07-07 14:08:43,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 7530. [2020-07-07 14:08:43,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7530 states. [2020-07-07 14:08:43,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 8626 transitions. [2020-07-07 14:08:43,785 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 8626 transitions. Word has length 388 [2020-07-07 14:08:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:43,786 INFO L479 AbstractCegarLoop]: Abstraction has 7530 states and 8626 transitions. [2020-07-07 14:08:43,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 14:08:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 8626 transitions. [2020-07-07 14:08:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-07-07 14:08:43,795 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:43,796 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:43,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-07 14:08:43,796 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:43,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:43,797 INFO L82 PathProgramCache]: Analyzing trace with hash -961418405, now seen corresponding path program 1 times [2020-07-07 14:08:43,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:43,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52369741] [2020-07-07 14:08:43,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:08:44,270 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:44,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52369741] [2020-07-07 14:08:44,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:44,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:08:44,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026949577] [2020-07-07 14:08:44,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:08:44,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:44,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:08:44,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:08:44,276 INFO L87 Difference]: Start difference. First operand 7530 states and 8626 transitions. Second operand 10 states. [2020-07-07 14:08:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:47,997 INFO L93 Difference]: Finished difference Result 12901 states and 14962 transitions. [2020-07-07 14:08:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 14:08:47,997 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 392 [2020-07-07 14:08:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:48,025 INFO L225 Difference]: With dead ends: 12901 [2020-07-07 14:08:48,025 INFO L226 Difference]: Without dead ends: 8682 [2020-07-07 14:08:48,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-07-07 14:08:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2020-07-07 14:08:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 7569. [2020-07-07 14:08:49,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7569 states. [2020-07-07 14:08:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7569 states to 7569 states and 8674 transitions. [2020-07-07 14:08:49,486 INFO L78 Accepts]: Start accepts. Automaton has 7569 states and 8674 transitions. Word has length 392 [2020-07-07 14:08:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:49,487 INFO L479 AbstractCegarLoop]: Abstraction has 7569 states and 8674 transitions. [2020-07-07 14:08:49,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:08:49,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7569 states and 8674 transitions. [2020-07-07 14:08:49,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-07-07 14:08:49,494 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:49,494 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:49,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-07 14:08:49,494 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:49,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:49,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1547268291, now seen corresponding path program 1 times [2020-07-07 14:08:49,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:49,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759689123] [2020-07-07 14:08:49,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:08:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:08:49,967 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:49,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759689123] [2020-07-07 14:08:49,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:08:49,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:08:49,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813372063] [2020-07-07 14:08:49,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:08:49,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:08:49,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:08:49,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:08:49,970 INFO L87 Difference]: Start difference. First operand 7569 states and 8674 transitions. Second operand 10 states. [2020-07-07 14:08:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:08:53,604 INFO L93 Difference]: Finished difference Result 12982 states and 15070 transitions. [2020-07-07 14:08:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 14:08:53,605 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 393 [2020-07-07 14:08:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:08:53,636 INFO L225 Difference]: With dead ends: 12982 [2020-07-07 14:08:53,637 INFO L226 Difference]: Without dead ends: 8724 [2020-07-07 14:08:53,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-07-07 14:08:53,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8724 states. [2020-07-07 14:08:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8724 to 7575. [2020-07-07 14:08:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7575 states. [2020-07-07 14:08:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 8680 transitions. [2020-07-07 14:08:55,192 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 8680 transitions. Word has length 393 [2020-07-07 14:08:55,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:08:55,193 INFO L479 AbstractCegarLoop]: Abstraction has 7575 states and 8680 transitions. [2020-07-07 14:08:55,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:08:55,193 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 8680 transitions. [2020-07-07 14:08:55,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-07-07 14:08:55,199 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:08:55,200 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:08:55,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-07 14:08:55,200 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:08:55,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:08:55,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1490009989, now seen corresponding path program 1 times [2020-07-07 14:08:55,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:08:55,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481019737] [2020-07-07 14:08:55,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:08:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 14:08:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 14:08:55,445 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:08:55,445 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 14:08:55,446 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 14:08:55,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-07 14:08:55,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 02:08:55 BoogieIcfgContainer [2020-07-07 14:08:55,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 14:08:55,504 INFO L168 Benchmark]: Toolchain (without parser) took 132568.99 ms. Allocated memory was 137.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 101.9 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 726.5 MB. Max. memory is 7.1 GB. [2020-07-07 14:08:55,504 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 14:08:55,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.86 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 179.8 MB in the end (delta: -78.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-07-07 14:08:55,506 INFO L168 Benchmark]: Boogie Preprocessor took 71.58 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 177.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-07 14:08:55,507 INFO L168 Benchmark]: RCFGBuilder took 956.12 ms. Allocated memory is still 202.4 MB. Free memory was 177.4 MB in the beginning and 130.8 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-07-07 14:08:55,507 INFO L168 Benchmark]: TraceAbstraction took 130991.84 ms. Allocated memory was 202.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 130.1 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 689.7 MB. Max. memory is 7.1 GB. [2020-07-07 14:08:55,511 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 538.86 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 179.8 MB in the end (delta: -78.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.58 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 177.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 956.12 ms. Allocated memory is still 202.4 MB. Free memory was 177.4 MB in the beginning and 130.8 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 130991.84 ms. Allocated memory was 202.4 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 130.1 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 689.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int m_pc = 0; [L15] int t1_pc = 0; [L16] int t2_pc = 0; [L17] int m_st ; [L18] int t1_st ; [L19] int t2_st ; [L20] int m_i ; [L21] int t1_i ; [L22] int t2_i ; [L23] int M_E = 2; [L24] int T1_E = 2; [L25] int T2_E = 2; [L26] int E_M = 2; [L27] int E_1 = 2; [L28] int E_2 = 2; [L33] int token ; [L35] int local ; [L600] int __retres1 ; [L604] CALL init_model() [L514] m_i = 1 [L515] t1_i = 1 [L516] t2_i = 1 [L604] RET init_model() [L605] CALL start_simulation() [L541] int kernel_st ; [L542] int tmp ; [L543] int tmp___0 ; [L547] kernel_st = 0 [L548] FCALL update_channels() [L549] CALL init_threads() [L233] COND TRUE m_i == 1 [L234] m_st = 0 [L238] COND TRUE t1_i == 1 [L239] t1_st = 0 [L243] COND TRUE t2_i == 1 [L244] t2_st = 0 [L549] RET init_threads() [L550] CALL fire_delta_events() [L346] COND FALSE !(M_E == 0) [L351] COND FALSE !(T1_E == 0) [L356] COND FALSE !(T2_E == 0) [L361] COND FALSE !(E_M == 0) [L366] COND FALSE !(E_1 == 0) [L371] COND FALSE !(E_2 == 0) [L550] RET fire_delta_events() [L551] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND FALSE !(m_pc == 1) [L178] __retres1 = 0 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND FALSE !(\read(tmp)) [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND FALSE !(t1_pc == 1) [L197] __retres1 = 0 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND FALSE !(\read(tmp___0)) [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND FALSE !(t2_pc == 1) [L216] __retres1 = 0 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND FALSE !(\read(tmp___1)) [L551] RET activate_threads() [L552] CALL reset_delta_events() [L384] COND FALSE !(M_E == 1) [L389] COND FALSE !(T1_E == 1) [L394] COND FALSE !(T2_E == 1) [L399] COND FALSE !(E_M == 1) [L404] COND FALSE !(E_1 == 1) [L409] COND FALSE !(E_2 == 1) [L552] RET reset_delta_events() [L555] COND TRUE 1 [L558] kernel_st = 1 [L559] CALL eval() [L279] int tmp ; [L283] COND TRUE 1 [L286] CALL, EXPR exists_runnable_thread() [L253] int __retres1 ; [L256] COND TRUE m_st == 0 [L257] __retres1 = 1 [L274] return (__retres1); [L286] RET, EXPR exists_runnable_thread() [L286] tmp = exists_runnable_thread() [L288] COND TRUE \read(tmp) [L293] COND TRUE m_st == 0 [L294] int tmp_ndt_1; [L295] tmp_ndt_1 = __VERIFIER_nondet_int() [L296] COND FALSE !(\read(tmp_ndt_1)) [L307] COND TRUE t1_st == 0 [L308] int tmp_ndt_2; [L309] tmp_ndt_2 = __VERIFIER_nondet_int() [L310] COND TRUE \read(tmp_ndt_2) [L312] t1_st = 1 [L313] CALL transmit1() [L96] COND TRUE t1_pc == 0 [L107] COND TRUE 1 [L109] t1_pc = 1 [L110] t1_st = 2 [L313] RET transmit1() [L321] COND TRUE t2_st == 0 [L322] int tmp_ndt_3; [L323] tmp_ndt_3 = __VERIFIER_nondet_int() [L324] COND TRUE \read(tmp_ndt_3) [L326] t2_st = 1 [L327] CALL transmit2() [L132] COND TRUE t2_pc == 0 [L143] COND TRUE 1 [L145] t2_pc = 1 [L146] t2_st = 2 [L327] RET transmit2() [L283] COND TRUE 1 [L286] CALL, EXPR exists_runnable_thread() [L253] int __retres1 ; [L256] COND TRUE m_st == 0 [L257] __retres1 = 1 [L274] return (__retres1); [L286] RET, EXPR exists_runnable_thread() [L286] tmp = exists_runnable_thread() [L288] COND TRUE \read(tmp) [L293] COND TRUE m_st == 0 [L294] int tmp_ndt_1; [L295] tmp_ndt_1 = __VERIFIER_nondet_int() [L296] COND TRUE \read(tmp_ndt_1) [L298] m_st = 1 [L299] CALL master() [L38] int tmp_var = __VERIFIER_nondet_int(); [L40] COND TRUE m_pc == 0 [L51] COND TRUE 1 [L54] token = __VERIFIER_nondet_int() [L55] local = token [L56] E_1 = 1 [L57] CALL immediate_notify() [L457] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND FALSE !(m_pc == 1) [L178] __retres1 = 0 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND FALSE !(\read(tmp)) [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND TRUE t1_pc == 1 [L188] COND TRUE E_1 == 1 [L189] __retres1 = 1 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND TRUE \read(tmp___0) [L436] t1_st = 0 [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND TRUE t2_pc == 1 [L207] COND FALSE !(E_2 == 1) [L216] __retres1 = 0 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND FALSE !(\read(tmp___1)) [L457] RET activate_threads() [L57] RET immediate_notify() [L58] E_1 = 2 [L59] m_pc = 1 [L60] m_st = 2 [L299] RET master() [L307] COND TRUE t1_st == 0 [L308] int tmp_ndt_2; [L309] tmp_ndt_2 = __VERIFIER_nondet_int() [L310] COND TRUE \read(tmp_ndt_2) [L312] t1_st = 1 [L313] CALL transmit1() [L96] COND FALSE !(t1_pc == 0) [L99] COND TRUE t1_pc == 1 [L115] token += 1 [L116] E_2 = 1 [L117] CALL immediate_notify() [L457] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND TRUE m_pc == 1 [L169] COND FALSE !(E_M == 1) [L178] __retres1 = 0 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND FALSE !(\read(tmp)) [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND TRUE t1_pc == 1 [L188] COND FALSE !(E_1 == 1) [L197] __retres1 = 0 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND FALSE !(\read(tmp___0)) [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND TRUE t2_pc == 1 [L207] COND TRUE E_2 == 1 [L208] __retres1 = 1 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND TRUE \read(tmp___1) [L444] t2_st = 0 [L457] RET activate_threads() [L117] RET immediate_notify() [L118] E_2 = 2 [L107] COND TRUE 1 [L109] t1_pc = 1 [L110] t1_st = 2 [L313] RET transmit1() [L321] COND TRUE t2_st == 0 [L322] int tmp_ndt_3; [L323] tmp_ndt_3 = __VERIFIER_nondet_int() [L324] COND TRUE \read(tmp_ndt_3) [L326] t2_st = 1 [L327] CALL transmit2() [L132] COND FALSE !(t2_pc == 0) [L135] COND TRUE t2_pc == 1 [L151] token += 1 [L152] E_M = 1 [L153] CALL immediate_notify() [L457] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND TRUE m_pc == 1 [L169] COND TRUE E_M == 1 [L170] __retres1 = 1 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND TRUE \read(tmp) [L428] m_st = 0 [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND TRUE t1_pc == 1 [L188] COND FALSE !(E_1 == 1) [L197] __retres1 = 0 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND FALSE !(\read(tmp___0)) [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND TRUE t2_pc == 1 [L207] COND FALSE !(E_2 == 1) [L216] __retres1 = 0 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND FALSE !(\read(tmp___1)) [L457] RET activate_threads() [L153] RET immediate_notify() [L154] E_M = 2 [L143] COND TRUE 1 [L145] t2_pc = 1 [L146] t2_st = 2 [L327] RET transmit2() [L283] COND TRUE 1 [L286] CALL, EXPR exists_runnable_thread() [L253] int __retres1 ; [L256] COND TRUE m_st == 0 [L257] __retres1 = 1 [L274] return (__retres1); [L286] RET, EXPR exists_runnable_thread() [L286] tmp = exists_runnable_thread() [L288] COND TRUE \read(tmp) [L293] COND TRUE m_st == 0 [L294] int tmp_ndt_1; [L295] tmp_ndt_1 = __VERIFIER_nondet_int() [L296] COND TRUE \read(tmp_ndt_1) [L298] m_st = 1 [L299] CALL master() [L38] int tmp_var = __VERIFIER_nondet_int(); [L40] COND FALSE !(m_pc == 0) [L43] COND TRUE m_pc == 1 [L65] COND FALSE !(token != local + 2) [L70] COND TRUE tmp_var <= 5 [L71] COND TRUE tmp_var >= 5 [L76] COND TRUE tmp_var <= 5 [L77] COND TRUE tmp_var >= 5 [L78] COND TRUE tmp_var == 5 [L79] CALL error() [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 284 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 130.8s, OverallIterations: 20, TraceHistogramMax: 6, AutomataDifference: 97.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6472 SDtfs, 33923 SDslu, 2366 SDs, 0 SdLazy, 36941 SolverSat, 9021 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1827 GetRequests, 1248 SyntacticMatches, 10 SemanticMatches, 569 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4751 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17158occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 21.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 28668 StatesRemovedByMinimization, 19 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...