/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/eca-rers2012/Problem01_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:01:42,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:01:42,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:01:42,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:01:42,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:01:42,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:01:42,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:01:42,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:01:42,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:01:42,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:01:42,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:01:42,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:01:42,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:01:42,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:01:42,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:01:42,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:01:42,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:01:42,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:01:42,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:01:42,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:01:42,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:01:42,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:01:42,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:01:42,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:01:42,436 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:01:42,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:01:42,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:01:42,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:01:42,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:01:42,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:01:42,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:01:42,438 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:01:42,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:01:42,438 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:01:42,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:01:42,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:01:42,439 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:01:42,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:01:42,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:01:42,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:01:42,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:01:42,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:01:42,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:01:42,441 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:01:42,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:01:42,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:01:42,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:01:42,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:01:42,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:01:42,867 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:01:42,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2021-02-22 02:01:42,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c1cd16db/a4f6ba57102244d39a132f88149e2e22/FLAG6d9c5159d [2021-02-22 02:01:43,776 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:01:43,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2021-02-22 02:01:43,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c1cd16db/a4f6ba57102244d39a132f88149e2e22/FLAG6d9c5159d [2021-02-22 02:01:43,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c1cd16db/a4f6ba57102244d39a132f88149e2e22 [2021-02-22 02:01:43,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:01:44,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:01:44,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:44,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:01:44,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:01:44,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:43" (1/1) ... [2021-02-22 02:01:44,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee56dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:44, skipping insertion in model container [2021-02-22 02:01:44,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:43" (1/1) ... [2021-02-22 02:01:44,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:01:44,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:01:44,454 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c[18480,18493] [2021-02-22 02:01:44,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:44,501 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:01:44,643 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c[18480,18493] [2021-02-22 02:01:44,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:44,748 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:01:44,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:44 WrapperNode [2021-02-22 02:01:44,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:44,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:01:44,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:01:44,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:01:44,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:44" (1/1) ... [2021-02-22 02:01:44,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:44" (1/1) ... [2021-02-22 02:01:44,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:44" (1/1) ... [2021-02-22 02:01:44,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:44" (1/1) ... [2021-02-22 02:01:44,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:44" (1/1) ... [2021-02-22 02:01:44,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:44" (1/1) ... [2021-02-22 02:01:44,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:44" (1/1) ... [2021-02-22 02:01:44,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:01:44,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:01:44,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:01:44,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:01:44,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:44" (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 [2021-02-22 02:01:45,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:01:45,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:01:45,025 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:01:45,025 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-22 02:01:45,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:01:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-22 02:01:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:01:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:01:45,027 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:01:45,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:01:45,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:01:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 02:01:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:01:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:01:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:01:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:01:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:01:45,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:01:45,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:01:46,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:01:46,484 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 02:01:46,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:46 BoogieIcfgContainer [2021-02-22 02:01:46,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:01:46,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:01:46,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:01:46,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:01:46,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:01:43" (1/3) ... [2021-02-22 02:01:46,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d94b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:46, skipping insertion in model container [2021-02-22 02:01:46,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:44" (2/3) ... [2021-02-22 02:01:46,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d94b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:46, skipping insertion in model container [2021-02-22 02:01:46,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:46" (3/3) ... [2021-02-22 02:01:46,497 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2021-02-22 02:01:46,504 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:01:46,509 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:01:46,529 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:01:46,555 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:01:46,555 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:01:46,555 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:01:46,556 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:01:46,556 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:01:46,556 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:01:46,556 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:01:46,556 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:01:46,585 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states. [2021-02-22 02:01:46,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-02-22 02:01:46,613 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:46,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:01:46,614 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:46,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:46,621 INFO L82 PathProgramCache]: Analyzing trace with hash -65770210, now seen corresponding path program 1 times [2021-02-22 02:01:46,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:46,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474634992] [2021-02-22 02:01:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:46,725 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:47,141 WARN L141 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-02-22 02:01:47,142 WARN L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-02-22 02:01:47,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:47,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:47,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:47,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:47,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:47,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:47,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:47,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:47,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:47,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:47,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:01:47,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:01:47,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474634992] [2021-02-22 02:01:47,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:47,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:01:47,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650879952] [2021-02-22 02:01:47,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:01:47,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:47,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:01:47,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:01:47,400 INFO L87 Difference]: Start difference. First operand 534 states. Second operand 5 states. [2021-02-22 02:01:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:50,166 INFO L93 Difference]: Finished difference Result 1279 states and 1678 transitions. [2021-02-22 02:01:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 02:01:50,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2021-02-22 02:01:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:50,191 INFO L225 Difference]: With dead ends: 1279 [2021-02-22 02:01:50,191 INFO L226 Difference]: Without dead ends: 704 [2021-02-22 02:01:50,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:01:50,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-02-22 02:01:50,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 611. [2021-02-22 02:01:50,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2021-02-22 02:01:50,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 739 transitions. [2021-02-22 02:01:50,478 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 739 transitions. Word has length 140 [2021-02-22 02:01:50,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:50,482 INFO L480 AbstractCegarLoop]: Abstraction has 611 states and 739 transitions. [2021-02-22 02:01:50,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:01:50,482 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 739 transitions. [2021-02-22 02:01:50,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-02-22 02:01:50,502 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:50,502 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:01:50,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:01:50,505 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:50,507 INFO L82 PathProgramCache]: Analyzing trace with hash 483020150, now seen corresponding path program 1 times [2021-02-22 02:01:50,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:50,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092140919] [2021-02-22 02:01:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:50,581 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:50,604 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:50,618 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:50,626 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:50,671 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:01:50,691 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:01:50,706 WARN L141 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-02-22 02:01:50,713 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:50,719 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:50,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:50,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:50,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:01:50,741 WARN L147 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size 81 [2021-02-22 02:01:50,749 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:50,757 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:50,766 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:50,778 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:50,817 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:01:50,826 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:01:50,838 WARN L141 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-02-22 02:01:50,844 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:50,846 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:50,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:50,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:50,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:01:50,858 WARN L147 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size 81 [2021-02-22 02:01:50,865 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:50,874 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:50,881 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:50,889 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:50,925 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:01:50,929 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:01:50,941 WARN L141 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-02-22 02:01:50,945 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:50,946 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:50,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:50,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:50,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:01:50,966 WARN L147 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size 81 [2021-02-22 02:01:50,976 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:50,989 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,002 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,011 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,055 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:01:51,059 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:01:51,067 WARN L141 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-02-22 02:01:51,070 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:51,072 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:51,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:01:51,081 WARN L147 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size 81 [2021-02-22 02:01:51,088 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,099 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,105 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,113 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,148 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:01:51,151 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:01:51,158 WARN L141 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-02-22 02:01:51,162 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:51,165 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:51,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:01:51,175 WARN L147 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size 81 [2021-02-22 02:01:51,180 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,189 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,193 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,204 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,240 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:01:51,243 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:01:51,246 WARN L141 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-02-22 02:01:51,248 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:51,250 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:51,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:01:51,257 WARN L147 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size 81 [2021-02-22 02:01:51,259 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,265 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,269 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,277 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,314 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:01:51,316 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:01:51,323 WARN L141 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-02-22 02:01:51,326 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:51,331 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:51,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:01:51,336 WARN L147 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size 81 [2021-02-22 02:01:51,338 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,343 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,345 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,351 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,384 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:01:51,387 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:01:51,391 WARN L141 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-02-22 02:01:51,394 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:51,396 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:51,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:01:51,420 WARN L147 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size 81 [2021-02-22 02:01:51,424 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,431 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,434 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,440 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,483 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:01:51,485 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:01:51,490 WARN L141 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-02-22 02:01:51,492 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:51,494 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:51,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:01:51,499 WARN L147 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size 81 [2021-02-22 02:01:51,504 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,510 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,513 WARN L141 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-02-22 02:01:51,518 WARN L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-02-22 02:01:51,556 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:01:51,559 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:01:51,564 WARN L141 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-02-22 02:01:51,567 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:51,576 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:51,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:01:51,585 WARN L147 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size 81 [2021-02-22 02:01:51,586 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 02:01:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:51,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:01:51,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:01:51,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:51,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:51,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:51,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:51,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:51,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:51,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:51,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:51,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:51,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:51,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:51,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:51,988 WARN L141 QuantifierPusher]: treesize reduction 2, result has 92.3 percent of original size [2021-02-22 02:01:51,990 WARN L147 QuantifierPusher]: treesize reduction 2, result has 92.3 percent of original size 24 [2021-02-22 02:01:52,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:52,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:52,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:52,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:01:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:01:52,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-22 02:01:52,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-02-22 02:01:52,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-02-22 02:01:52,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-02-22 02:01:52,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-02-22 02:01:52,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-02-22 02:01:52,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-02-22 02:01:52,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-02-22 02:01:52,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-02-22 02:01:52,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-22 02:01:52,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-02-22 02:01:52,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-02-22 02:01:52,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-02-22 02:01:52,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-02-22 02:01:52,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-02-22 02:01:52,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-02-22 02:01:52,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-02-22 02:01:52,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:52,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:52,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:52,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-02-22 02:01:53,105 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2021-02-22 02:01:53,110 WARN L141 QuantifierPusher]: treesize reduction 83, result has 53.6 percent of original size [2021-02-22 02:01:53,113 WARN L147 QuantifierPusher]: treesize reduction 83, result has 53.6 percent of original size 96 [2021-02-22 02:01:53,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-22 02:01:53,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-22 02:01:53,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-22 02:01:53,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:01:53,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:01:53,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:53,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:53,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:01:53,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:01:53,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:01:53,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-22 02:01:53,662 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-02-22 02:01:53,662 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size 28 [2021-02-22 02:01:53,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:01:53,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:53,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-22 02:01:53,796 WARN L141 QuantifierPusher]: treesize reduction 46, result has 2.1 percent of original size [2021-02-22 02:01:53,797 WARN L147 QuantifierPusher]: treesize reduction 46, result has 2.1 percent of original size 1 [2021-02-22 02:01:53,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092140919] [2021-02-22 02:01:53,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:53,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-02-22 02:01:53,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482792198] [2021-02-22 02:01:53,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-22 02:01:53,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:53,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-22 02:01:53,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2021-02-22 02:01:53,800 INFO L87 Difference]: Start difference. First operand 611 states and 739 transitions. Second operand 25 states. [2021-02-22 02:01:54,065 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-02-22 02:01:54,377 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 97 [2021-02-22 02:01:54,655 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 99 [2021-02-22 02:01:54,924 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 97 [2021-02-22 02:01:55,236 WARN L202 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 103 [2021-02-22 02:01:55,558 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 103 [2021-02-22 02:01:55,859 WARN L202 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 105 [2021-02-22 02:01:56,213 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 124 [2021-02-22 02:01:56,424 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-02-22 02:01:58,451 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-02-22 02:01:58,696 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-02-22 02:01:58,889 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-02-22 02:01:59,123 WARN L202 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-02-22 02:01:59,805 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-22 02:02:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:02:08,293 INFO L93 Difference]: Finished difference Result 2616 states and 3563 transitions. [2021-02-22 02:02:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-02-22 02:02:08,294 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 162 [2021-02-22 02:02:08,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:02:08,314 INFO L225 Difference]: With dead ends: 2616 [2021-02-22 02:02:08,314 INFO L226 Difference]: Without dead ends: 2037 [2021-02-22 02:02:08,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=415, Invalid=1841, Unknown=0, NotChecked=0, Total=2256 [2021-02-22 02:02:08,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2021-02-22 02:02:08,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 1314. [2021-02-22 02:02:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2021-02-22 02:02:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1686 transitions. [2021-02-22 02:02:08,877 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1686 transitions. Word has length 162 [2021-02-22 02:02:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:02:08,879 INFO L480 AbstractCegarLoop]: Abstraction has 1314 states and 1686 transitions. [2021-02-22 02:02:08,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-22 02:02:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1686 transitions. [2021-02-22 02:02:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-02-22 02:02:08,887 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:02:08,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:02:08,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-22 02:02:08,903 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:02:08,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:02:08,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1310603594, now seen corresponding path program 1 times [2021-02-22 02:02:08,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:02:08,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390601242] [2021-02-22 02:02:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:02:08,947 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11