/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:50:41,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:50:41,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:50:41,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:50:41,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:50:41,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:50:41,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:50:41,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:50:41,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:50:41,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:50:41,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:50:41,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:50:41,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:50:41,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:50:41,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:50:41,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:50:41,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:50:41,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:50:41,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:50:41,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:50:41,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:50:41,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:50:41,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:50:41,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:50:41,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:50:41,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:50:41,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:50:41,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:50:41,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:50:41,720 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:50:41,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:50:41,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:50:41,727 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:50:41,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:50:41,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:50:41,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:50:41,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:50:41,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:50:41,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:50:41,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:50:41,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:50:41,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:50:41,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:50:41,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:50:41,731 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:50:41,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:50:41,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:50:41,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:50:41,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:50:41,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:50:41,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:50:41,732 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:50:41,732 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:50:42,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:50:42,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:50:42,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:50:42,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:50:42,276 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:50:42,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2021-02-24 04:50:42,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d929c472/f1d52b2c07fd4511b83d6658e2dc332b/FLAG66fc86000 [2021-02-24 04:50:43,126 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:50:43,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2021-02-24 04:50:43,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d929c472/f1d52b2c07fd4511b83d6658e2dc332b/FLAG66fc86000 [2021-02-24 04:50:43,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d929c472/f1d52b2c07fd4511b83d6658e2dc332b [2021-02-24 04:50:43,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:50:43,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:50:43,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:50:43,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:50:43,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:50:43,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:50:43" (1/1) ... [2021-02-24 04:50:43,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@252aeccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:43, skipping insertion in model container [2021-02-24 04:50:43,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:50:43" (1/1) ... [2021-02-24 04:50:43,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:50:43,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:50:43,820 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c[337,350] [2021-02-24 04:50:43,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:50:43,924 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:50:43,942 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c[337,350] [2021-02-24 04:50:43,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:50:44,003 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:50:44,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:44 WrapperNode [2021-02-24 04:50:44,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:50:44,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:50:44,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:50:44,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:50:44,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:44" (1/1) ... [2021-02-24 04:50:44,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:44" (1/1) ... [2021-02-24 04:50:44,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:44" (1/1) ... [2021-02-24 04:50:44,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:44" (1/1) ... [2021-02-24 04:50:44,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:44" (1/1) ... [2021-02-24 04:50:44,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:44" (1/1) ... [2021-02-24 04:50:44,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:44" (1/1) ... [2021-02-24 04:50:44,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:50:44,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:50:44,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:50:44,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:50:44,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:50:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:50:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:50:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:50:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-02-24 04:50:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-02-24 04:50:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-02-24 04:50:44,296 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-02-24 04:50:44,296 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2021-02-24 04:50:44,297 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2021-02-24 04:50:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2021-02-24 04:50:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-02-24 04:50:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2021-02-24 04:50:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2021-02-24 04:50:44,299 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2021-02-24 04:50:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2021-02-24 04:50:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:50:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:50:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:50:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:50:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:50:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:50:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-02-24 04:50:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-02-24 04:50:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-02-24 04:50:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-02-24 04:50:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2021-02-24 04:50:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2021-02-24 04:50:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2021-02-24 04:50:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-02-24 04:50:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2021-02-24 04:50:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2021-02-24 04:50:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2021-02-24 04:50:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2021-02-24 04:50:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:50:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:50:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:50:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:50:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:50:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:50:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:50:45,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:50:45,424 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-24 04:50:45,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:50:45 BoogieIcfgContainer [2021-02-24 04:50:45,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:50:45,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:50:45,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:50:45,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:50:45,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:50:43" (1/3) ... [2021-02-24 04:50:45,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d753525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:50:45, skipping insertion in model container [2021-02-24 04:50:45,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:44" (2/3) ... [2021-02-24 04:50:45,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d753525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:50:45, skipping insertion in model container [2021-02-24 04:50:45,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:50:45" (3/3) ... [2021-02-24 04:50:45,439 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2021-02-24 04:50:45,457 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:50:45,465 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:50:45,485 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:50:45,514 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:50:45,514 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:50:45,515 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:50:45,515 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:50:45,515 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:50:45,515 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:50:45,515 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:50:45,516 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:50:45,539 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2021-02-24 04:50:45,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-02-24 04:50:45,559 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:45,560 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] [2021-02-24 04:50:45,560 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:45,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:45,568 INFO L82 PathProgramCache]: Analyzing trace with hash -374844985, now seen corresponding path program 1 times [2021-02-24 04:50:45,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:45,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448767626] [2021-02-24 04:50:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:45,672 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:50:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:45,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:45,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:45,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:45,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:45,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:45,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:46,069 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-02-24 04:50:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:46,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:46,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:46,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:50:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:46,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:46,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:46,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:46,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:50:46,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:50:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:46,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:46,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:46,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:46,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:50:46,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-24 04:50:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:46,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:46,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-02-24 04:50:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:46,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:46,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:50:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:46,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:46,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:50:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:46,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:46,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:46,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448767626] [2021-02-24 04:50:46,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:46,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:50:46,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357591289] [2021-02-24 04:50:46,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:50:46,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:46,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:50:46,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:50:46,497 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 7 states. [2021-02-24 04:50:48,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:48,190 INFO L93 Difference]: Finished difference Result 410 states and 524 transitions. [2021-02-24 04:50:48,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 04:50:48,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2021-02-24 04:50:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:48,210 INFO L225 Difference]: With dead ends: 410 [2021-02-24 04:50:48,211 INFO L226 Difference]: Without dead ends: 259 [2021-02-24 04:50:48,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:50:48,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-02-24 04:50:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 179. [2021-02-24 04:50:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2021-02-24 04:50:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 203 transitions. [2021-02-24 04:50:48,339 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 203 transitions. Word has length 117 [2021-02-24 04:50:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:48,340 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 203 transitions. [2021-02-24 04:50:48,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:50:48,340 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 203 transitions. [2021-02-24 04:50:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-02-24 04:50:48,345 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:48,346 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] [2021-02-24 04:50:48,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:50:48,347 INFO L428 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:48,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:48,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1796374887, now seen corresponding path program 1 times [2021-02-24 04:50:48,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:48,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517119046] [2021-02-24 04:50:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:48,352 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:50:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:48,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:48,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:48,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:48,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:48,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:48,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:50:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:48,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:50:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:48,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:48,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:48,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-24 04:50:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:48,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:48,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:48,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-02-24 04:50:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:48,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:48,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:50:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:48,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:48,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:50:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:48,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:48,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:48,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517119046] [2021-02-24 04:50:48,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:48,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:50:48,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728379436] [2021-02-24 04:50:48,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:50:48,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:48,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:50:48,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:50:48,736 INFO L87 Difference]: Start difference. First operand 179 states and 203 transitions. Second operand 6 states. [2021-02-24 04:50:48,970 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-02-24 04:50:50,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:50,476 INFO L93 Difference]: Finished difference Result 549 states and 681 transitions. [2021-02-24 04:50:50,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:50:50,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2021-02-24 04:50:50,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:50,484 INFO L225 Difference]: With dead ends: 549 [2021-02-24 04:50:50,485 INFO L226 Difference]: Without dead ends: 422 [2021-02-24 04:50:50,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:50:50,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-02-24 04:50:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 311. [2021-02-24 04:50:50,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2021-02-24 04:50:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 370 transitions. [2021-02-24 04:50:50,623 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 370 transitions. Word has length 117 [2021-02-24 04:50:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:50,624 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 370 transitions. [2021-02-24 04:50:50,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:50:50,624 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 370 transitions. [2021-02-24 04:50:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-02-24 04:50:50,629 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:50,629 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] [2021-02-24 04:50:50,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:50:50,630 INFO L428 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:50,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:50,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1117237835, now seen corresponding path program 1 times [2021-02-24 04:50:50,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:50,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247421014] [2021-02-24 04:50:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:50,634 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:50:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:50,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:50,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:50,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:50,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:50,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:50,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:50,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:50,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:50,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:50:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:50,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:50,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:50,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:50,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:50:50,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:50:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:50,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:50,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:50:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-24 04:50:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:50,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:50,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:50,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-02-24 04:50:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:50,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:50,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:50:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:50,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:50,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:50,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:50:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:50,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:50,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:50,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247421014] [2021-02-24 04:50:50,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:50,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:50:50,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217313152] [2021-02-24 04:50:50,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:50:50,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:50,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:50:50,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:50:50,881 INFO L87 Difference]: Start difference. First operand 311 states and 370 transitions. Second operand 7 states. [2021-02-24 04:50:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:52,174 INFO L93 Difference]: Finished difference Result 669 states and 823 transitions. [2021-02-24 04:50:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 04:50:52,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2021-02-24 04:50:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:52,185 INFO L225 Difference]: With dead ends: 669 [2021-02-24 04:50:52,185 INFO L226 Difference]: Without dead ends: 409 [2021-02-24 04:50:52,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:50:52,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-02-24 04:50:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 306. [2021-02-24 04:50:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2021-02-24 04:50:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 364 transitions. [2021-02-24 04:50:52,293 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 364 transitions. Word has length 118 [2021-02-24 04:50:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:52,293 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 364 transitions. [2021-02-24 04:50:52,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:50:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 364 transitions. [2021-02-24 04:50:52,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-02-24 04:50:52,297 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:52,297 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] [2021-02-24 04:50:52,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:50:52,297 INFO L428 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:52,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:52,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1501366736, now seen corresponding path program 1 times [2021-02-24 04:50:52,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:52,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534382289] [2021-02-24 04:50:52,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:52,301 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:50:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:52,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:52,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:52,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:52,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:52,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:52,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:52,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:50:52,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:52,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:52,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:52,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:50:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:52,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:50:52,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:50:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:52,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:52,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-24 04:50:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:52,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:52,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:52,561 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 04:50:52,563 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 04:50:52,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 04:50:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:52,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:52,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:52,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-02-24 04:50:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:52,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:52,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:50:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:52,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:52,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:50:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:52,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:52,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:52,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534382289] [2021-02-24 04:50:52,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:52,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 04:50:52,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428734267] [2021-02-24 04:50:52,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 04:50:52,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:52,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 04:50:52,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:50:52,733 INFO L87 Difference]: Start difference. First operand 306 states and 364 transitions. Second operand 14 states. [2021-02-24 04:50:53,440 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-02-24 04:50:53,689 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-02-24 04:50:58,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:58,695 INFO L93 Difference]: Finished difference Result 1389 states and 1861 transitions. [2021-02-24 04:50:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-02-24 04:50:58,696 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2021-02-24 04:50:58,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:58,708 INFO L225 Difference]: With dead ends: 1389 [2021-02-24 04:50:58,708 INFO L226 Difference]: Without dead ends: 1134 [2021-02-24 04:50:58,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=579, Invalid=2727, Unknown=0, NotChecked=0, Total=3306 [2021-02-24 04:50:58,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-02-24 04:50:59,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 753. [2021-02-24 04:50:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2021-02-24 04:50:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 949 transitions. [2021-02-24 04:50:59,025 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 949 transitions. Word has length 130 [2021-02-24 04:50:59,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:59,026 INFO L480 AbstractCegarLoop]: Abstraction has 753 states and 949 transitions. [2021-02-24 04:50:59,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 04:50:59,027 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 949 transitions. [2021-02-24 04:50:59,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-02-24 04:50:59,029 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:59,029 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] [2021-02-24 04:50:59,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:50:59,030 INFO L428 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:59,031 INFO L82 PathProgramCache]: Analyzing trace with hash -433215497, now seen corresponding path program 1 times [2021-02-24 04:50:59,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:59,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606189182] [2021-02-24 04:50:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:59,035 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:50:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:59,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:59,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:59,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:59,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:59,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:59,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:59,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:59,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:59,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:50:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:59,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:59,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:59,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:50:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:59,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:59,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-24 04:50:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:59,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:59,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-02-24 04:50:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:59,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:59,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:50:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:59,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:59,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:50:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:59,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:59,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:59,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606189182] [2021-02-24 04:50:59,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:59,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:50:59,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528452207] [2021-02-24 04:50:59,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:50:59,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:59,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:50:59,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:50:59,282 INFO L87 Difference]: Start difference. First operand 753 states and 949 transitions. Second operand 6 states. [2021-02-24 04:51:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:51:01,080 INFO L93 Difference]: Finished difference Result 2124 states and 2786 transitions. [2021-02-24 04:51:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:51:01,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2021-02-24 04:51:01,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:51:01,098 INFO L225 Difference]: With dead ends: 2124 [2021-02-24 04:51:01,098 INFO L226 Difference]: Without dead ends: 1422 [2021-02-24 04:51:01,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:51:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2021-02-24 04:51:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1180. [2021-02-24 04:51:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2021-02-24 04:51:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1490 transitions. [2021-02-24 04:51:01,542 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1490 transitions. Word has length 121 [2021-02-24 04:51:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:51:01,543 INFO L480 AbstractCegarLoop]: Abstraction has 1180 states and 1490 transitions. [2021-02-24 04:51:01,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:51:01,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1490 transitions. [2021-02-24 04:51:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-24 04:51:01,548 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:51:01,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:51:01,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:51:01,549 INFO L428 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:51:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:51:01,550 INFO L82 PathProgramCache]: Analyzing trace with hash -948470126, now seen corresponding path program 1 times [2021-02-24 04:51:01,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:51:01,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677011537] [2021-02-24 04:51:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:51:01,613 WARN L141 QuantifierPusher]: treesize reduction 11, result has 85.7 percent of original size [2021-02-24 04:51:01,641 WARN L147 QuantifierPusher]: treesize reduction 11, result has 85.7 percent of original size 66 [2021-02-24 04:51:01,654 WARN L141 QuantifierPusher]: treesize reduction 11, result has 85.7 percent of original size [2021-02-24 04:51:01,663 WARN L147 QuantifierPusher]: treesize reduction 11, result has 85.7 percent of original size 66 [2021-02-24 04:51:01,707 WARN L141 QuantifierPusher]: treesize reduction 2, result has 93.8 percent of original size [2021-02-24 04:51:01,726 WARN L147 QuantifierPusher]: treesize reduction 2, result has 93.8 percent of original size 30 [2021-02-24 04:51:01,736 WARN L141 QuantifierPusher]: treesize reduction 12, result has 88.2 percent of original size [2021-02-24 04:51:01,742 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-24 04:51:01,749 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:01,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:51:01,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:01,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 04:51:01,762 WARN L147 QuantifierPusher]: treesize reduction 12, result has 88.2 percent of original size 90 [2021-02-24 04:51:01,766 WARN L141 QuantifierPusher]: treesize reduction 76, result has 1.3 percent of original size [2021-02-24 04:51:01,767 WARN L147 QuantifierPusher]: treesize reduction 76, result has 1.3 percent of original size 1 [2021-02-24 04:51:01,771 WARN L141 QuantifierPusher]: treesize reduction 76, result has 1.3 percent of original size [2021-02-24 04:51:01,772 WARN L147 QuantifierPusher]: treesize reduction 76, result has 1.3 percent of original size 1 [2021-02-24 04:51:01,775 WARN L141 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size [2021-02-24 04:51:01,777 WARN L147 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size 8 [2021-02-24 04:51:01,782 WARN L141 QuantifierPusher]: treesize reduction 12, result has 82.9 percent of original size [2021-02-24 04:51:01,787 WARN L147 QuantifierPusher]: treesize reduction 12, result has 82.9 percent of original size 58 [2021-02-24 04:51:01,791 WARN L141 QuantifierPusher]: treesize reduction 11, result has 85.7 percent of original size [2021-02-24 04:51:01,799 WARN L147 QuantifierPusher]: treesize reduction 11, result has 85.7 percent of original size 66 [2021-02-24 04:51:01,804 WARN L141 QuantifierPusher]: treesize reduction 11, result has 85.7 percent of original size [2021-02-24 04:51:01,812 WARN L147 QuantifierPusher]: treesize reduction 11, result has 85.7 percent of original size 66 [2021-02-24 04:51:01,846 WARN L141 QuantifierPusher]: treesize reduction 24, result has 25.0 percent of original size [2021-02-24 04:51:01,848 WARN L147 QuantifierPusher]: treesize reduction 24, result has 25.0 percent of original size 8 [2021-02-24 04:51:01,852 WARN L141 QuantifierPusher]: treesize reduction 12, result has 82.9 percent of original size [2021-02-24 04:51:01,858 WARN L147 QuantifierPusher]: treesize reduction 12, result has 82.9 percent of original size 58 [2021-02-24 04:51:01,864 WARN L141 QuantifierPusher]: treesize reduction 76, result has 1.3 percent of original size [2021-02-24 04:51:01,865 WARN L147 QuantifierPusher]: treesize reduction 76, result has 1.3 percent of original size 1 [2021-02-24 04:51:01,875 WARN L141 QuantifierPusher]: treesize reduction 76, result has 1.3 percent of original size [2021-02-24 04:51:01,875 WARN L147 QuantifierPusher]: treesize reduction 76, result has 1.3 percent of original size 1 [2021-02-24 04:51:01,881 WARN L141 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size [2021-02-24 04:51:01,884 WARN L147 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size 8 [2021-02-24 04:51:01,890 WARN L141 QuantifierPusher]: treesize reduction 12, result has 82.9 percent of original size [2021-02-24 04:51:01,903 WARN L147 QuantifierPusher]: treesize reduction 12, result has 82.9 percent of original size 58 [2021-02-24 04:51:01,905 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:51:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:02,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:51:02,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:51:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:02,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:51:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:02,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:51:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:02,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:51:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:02,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-24 04:51:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:02,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:51:02,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:51:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:02,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:51:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:02,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:51:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:51:02,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-02-24 04:51:02,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-02-24 04:51:02,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-02-24 04:51:02,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:02,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:51:02,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:51:02,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:51:02,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:51:02,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 04:51:02,360 WARN L141 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-02-24 04:51:02,361 WARN L147 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size 7 [2021-02-24 04:51:02,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:51:02,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:51:02,400 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-24 04:51:02,400 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-24 04:51:02,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:51:02,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:51:02,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:51:02,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:51:02,487 WARN L141 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size [2021-02-24 04:51:02,488 WARN L147 QuantifierPusher]: treesize reduction 8, result has 55.6 percent of original size 10 [2021-02-24 04:51:02,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:51:02,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:51:02,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:51:02,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:51:02,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:51:02,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:51:02,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:51:02,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:51:02,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-02-24 04:51:02,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:51:02,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:51:02,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:51:02,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:51:02,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 04:51:02,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:02,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 04:51:03,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:03,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 04:51:03,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:03,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:51:03,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:03,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:51:03,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:03,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:51:03,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:03,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:51:03,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:51:03,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:03,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:51:03,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:03,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-24 04:51:03,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:03,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:51:03,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:03,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:51:03,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677011537] [2021-02-24 04:51:03,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:51:03,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-02-24 04:51:03,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857764256] [2021-02-24 04:51:03,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-24 04:51:03,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:51:03,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-24 04:51:03,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2021-02-24 04:51:03,306 INFO L87 Difference]: Start difference. First operand 1180 states and 1490 transitions. Second operand 31 states. [2021-02-24 04:51:04,424 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-02-24 04:51:04,570 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-02-24 04:51:05,230 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-24 04:51:05,400 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-24 04:51:05,565 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-24 04:51:05,734 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-24 04:51:06,027 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-24 04:51:06,232 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-24 04:51:06,404 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-24 04:51:06,830 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-02-24 04:51:06,955 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-02-24 04:51:10,434 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-24 04:51:12,197 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2021-02-24 04:51:12,480 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2021-02-24 04:51:12,715 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-02-24 04:51:12,884 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-24 04:51:15,583 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-02-24 04:51:15,767 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-24 04:51:15,943 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-02-24 04:51:16,131 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-24 04:51:16,888 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2021-02-24 04:51:17,125 WARN L202 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2021-02-24 04:51:17,342 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-24 04:51:17,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:51:17,762 INFO L93 Difference]: Finished difference Result 3104 states and 3994 transitions. [2021-02-24 04:51:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2021-02-24 04:51:17,763 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 154 [2021-02-24 04:51:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:51:17,779 INFO L225 Difference]: With dead ends: 3104 [2021-02-24 04:51:17,779 INFO L226 Difference]: Without dead ends: 2005 [2021-02-24 04:51:17,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9599 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=2446, Invalid=22360, Unknown=0, NotChecked=0, Total=24806 [2021-02-24 04:51:17,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2021-02-24 04:51:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1396. [2021-02-24 04:51:18,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1396 states. [2021-02-24 04:51:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1709 transitions. [2021-02-24 04:51:18,182 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1709 transitions. Word has length 154 [2021-02-24 04:51:18,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:51:18,182 INFO L480 AbstractCegarLoop]: Abstraction has 1396 states and 1709 transitions. [2021-02-24 04:51:18,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-02-24 04:51:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1709 transitions. [2021-02-24 04:51:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-02-24 04:51:18,186 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:51:18,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:51:18,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:51:18,188 INFO L428 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:51:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:51:18,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1894899928, now seen corresponding path program 1 times [2021-02-24 04:51:18,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:51:18,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82283465] [2021-02-24 04:51:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:51:18,192 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:51:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:51:18,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:51:18,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:51:18,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:51:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:51:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:51:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-24 04:51:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-24 04:51:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-24 04:51:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:51:18,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-24 04:51:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:51:18,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:51:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:51:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:51:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 04:51:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 04:51:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:51:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:51:18,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:18,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:51:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:51:18,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82283465] [2021-02-24 04:51:18,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:51:18,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:51:18,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086894718] [2021-02-24 04:51:18,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:51:18,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:51:18,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:51:18,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:51:18,647 INFO L87 Difference]: Start difference. First operand 1396 states and 1709 transitions. Second operand 9 states. [2021-02-24 04:51:20,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:51:20,895 INFO L93 Difference]: Finished difference Result 2592 states and 3269 transitions. [2021-02-24 04:51:20,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 04:51:20,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2021-02-24 04:51:20,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:51:20,906 INFO L225 Difference]: With dead ends: 2592 [2021-02-24 04:51:20,906 INFO L226 Difference]: Without dead ends: 1284 [2021-02-24 04:51:20,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-02-24 04:51:20,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-02-24 04:51:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1002. [2021-02-24 04:51:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2021-02-24 04:51:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1176 transitions. [2021-02-24 04:51:21,174 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1176 transitions. Word has length 167 [2021-02-24 04:51:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:51:21,175 INFO L480 AbstractCegarLoop]: Abstraction has 1002 states and 1176 transitions. [2021-02-24 04:51:21,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:51:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1176 transitions. [2021-02-24 04:51:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-24 04:51:21,180 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:51:21,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:51:21,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:51:21,181 INFO L428 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:51:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:51:21,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1431268616, now seen corresponding path program 1 times [2021-02-24 04:51:21,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:51:21,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260794342] [2021-02-24 04:51:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:51:21,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:51:21,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-24 04:51:21,208 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: cannot bring into simultaneous update form, v_~p_last_write~0_15 has two outvars in equality [(= v_~q_free~0_34 0), (> v_~c_dr_pc~0_40 1), (= v_~p_dw_st~0_49 v_~p_dw_st~0_48), (> v_~p_dw_pc~0_26 1), (= v_~q_buf_0~0_15 v_~p_last_write~0_15), (= v_~q_write_ev~0_20 2), (> v_~q_free~0_35 0), (= v_~q_buf_0~0_15 |v_do_write_p_#t~nondet9_5|), (<= 0 (+ |v_do_write_p_#t~nondet9_5| 2147483648)), (= v_~p_num_write~0_19 (+ v_~p_num_write~0_20 1)), (<= |v_do_write_p_#t~nondet9_5| 2147483647), (= v_~c_dr_st~0_47 v_~c_dr_st~0_46)] at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.extractUpdateRhs(SimultaneousUpdate.java:154) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.(SimultaneousUpdate.java:104) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.werner.LoopAcceleratorLite.calculateSymbolicMemory(LoopAcceleratorLite.java:167) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.werner.LoopAcceleratorLite.summarizeLoop(LoopAcceleratorLite.java:105) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:52) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-24 04:51:21,213 INFO L168 Benchmark]: Toolchain (without parser) took 37740.24 ms. Allocated memory was 157.3 MB in the beginning and 619.7 MB in the end (delta: 462.4 MB). Free memory was 133.3 MB in the beginning and 292.1 MB in the end (delta: -158.8 MB). Peak memory consumption was 304.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:51:21,214 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 157.3 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:51:21,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.27 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 120.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:51:21,214 INFO L168 Benchmark]: Boogie Preprocessor took 120.36 ms. Allocated memory is still 157.3 MB. Free memory was 120.4 MB in the beginning and 118.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:51:21,214 INFO L168 Benchmark]: RCFGBuilder took 1299.75 ms. Allocated memory is still 157.3 MB. Free memory was 118.4 MB in the beginning and 117.5 MB in the end (delta: 911.9 kB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:51:21,215 INFO L168 Benchmark]: TraceAbstraction took 35782.22 ms. Allocated memory was 157.3 MB in the beginning and 619.7 MB in the end (delta: 462.4 MB). Free memory was 117.0 MB in the beginning and 292.1 MB in the end (delta: -175.1 MB). Peak memory consumption was 287.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:51:21,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 157.3 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 508.27 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 120.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 120.36 ms. Allocated memory is still 157.3 MB. Free memory was 120.4 MB in the beginning and 118.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1299.75 ms. Allocated memory is still 157.3 MB. Free memory was 118.4 MB in the beginning and 117.5 MB in the end (delta: 911.9 kB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 35782.22 ms. Allocated memory was 157.3 MB in the beginning and 619.7 MB in the end (delta: 462.4 MB). Free memory was 117.0 MB in the beginning and 292.1 MB in the end (delta: -175.1 MB). Peak memory consumption was 287.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: cannot bring into simultaneous update form, v_~p_last_write~0_15 has two outvars in equality [(= v_~q_free~0_34 0), (> v_~c_dr_pc~0_40 1), (= v_~p_dw_st~0_49 v_~p_dw_st~0_48), (> v_~p_dw_pc~0_26 1), (= v_~q_buf_0~0_15 v_~p_last_write~0_15), (= v_~q_write_ev~0_20 2), (> v_~q_free~0_35 0), (= v_~q_buf_0~0_15 |v_do_write_p_#t~nondet9_5|), (<= 0 (+ |v_do_write_p_#t~nondet9_5| 2147483648)), (= v_~p_num_write~0_19 (+ v_~p_num_write~0_20 1)), (<= |v_do_write_p_#t~nondet9_5| 2147483647), (= v_~c_dr_st~0_47 v_~c_dr_st~0_46)] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: cannot bring into simultaneous update form, v_~p_last_write~0_15 has two outvars in equality [(= v_~q_free~0_34 0), (> v_~c_dr_pc~0_40 1), (= v_~p_dw_st~0_49 v_~p_dw_st~0_48), (> v_~p_dw_pc~0_26 1), (= v_~q_buf_0~0_15 v_~p_last_write~0_15), (= v_~q_write_ev~0_20 2), (> v_~q_free~0_35 0), (= v_~q_buf_0~0_15 |v_do_write_p_#t~nondet9_5|), (<= 0 (+ |v_do_write_p_#t~nondet9_5| 2147483648)), (= v_~p_num_write~0_19 (+ v_~p_num_write~0_20 1)), (<= |v_do_write_p_#t~nondet9_5| 2147483647), (= v_~c_dr_st~0_47 v_~c_dr_st~0_46)]: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.SimultaneousUpdate.computeSubstitutionMapping(SimultaneousUpdate.java:174) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...