/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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:26:48,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:26:48,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:26:48,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:26:48,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:26:48,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:26:48,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:26:48,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:26:48,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:26:48,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:26:48,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:26:48,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:26:48,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:26:48,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:26:48,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:26:48,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:26:48,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:26:48,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:26:48,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:26:48,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:26:48,363 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 04:26:48,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:26:48,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:26:48,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:26:48,380 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:26:48,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:26:48,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:26:48,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:26:48,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:26:48,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:26:48,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:26:48,382 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:26:48,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:26:48,382 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:26:48,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:26:48,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:26:48,383 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:26:48,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:26:48,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:26:48,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:26:48,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:26:48,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:26:48,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:26:48,385 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:26:48,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:26:48,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:26:48,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:26:48,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:26:48,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:26:48,842 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:26:48,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2021-02-24 04:26:48,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4326431f3/be7238dd589d43ad8689d86a4edf320a/FLAG87b88278b [2021-02-24 04:26:49,929 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:26:49,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2021-02-24 04:26:49,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4326431f3/be7238dd589d43ad8689d86a4edf320a/FLAG87b88278b [2021-02-24 04:26:50,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4326431f3/be7238dd589d43ad8689d86a4edf320a [2021-02-24 04:26:50,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:26:50,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:26:50,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:26:50,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:26:50,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:26:50,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:26:50" (1/1) ... [2021-02-24 04:26:50,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148d8f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:50, skipping insertion in model container [2021-02-24 04:26:50,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:26:50" (1/1) ... [2021-02-24 04:26:50,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:26:50,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:26:50,543 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_label11.c[19099,19112] [2021-02-24 04:26:50,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:26:50,604 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:26:50,733 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_label11.c[19099,19112] [2021-02-24 04:26:50,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:26:50,812 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:26:50,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:50 WrapperNode [2021-02-24 04:26:50,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:26:50,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:26:50,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:26:50,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:26:50,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:50" (1/1) ... [2021-02-24 04:26:50,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:50" (1/1) ... [2021-02-24 04:26:50,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:50" (1/1) ... [2021-02-24 04:26:50,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:50" (1/1) ... [2021-02-24 04:26:50,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:50" (1/1) ... [2021-02-24 04:26:50,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:50" (1/1) ... [2021-02-24 04:26:50,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:50" (1/1) ... [2021-02-24 04:26:50,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:26:50,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:26:50,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:26:50,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:26:50,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:50" (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 04:26:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:26:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:26:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:26:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-24 04:26:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:26:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-24 04:26:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:26:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:26:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:26:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:26:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:26:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-24 04:26:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:26:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:26:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:26:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:26:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:26:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:26:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:26:52,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:26:52,411 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:26:52,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:26:52 BoogieIcfgContainer [2021-02-24 04:26:52,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:26:52,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:26:52,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:26:52,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:26:52,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:26:50" (1/3) ... [2021-02-24 04:26:52,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405d5c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:26:52, skipping insertion in model container [2021-02-24 04:26:52,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:26:50" (2/3) ... [2021-02-24 04:26:52,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405d5c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:26:52, skipping insertion in model container [2021-02-24 04:26:52,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:26:52" (3/3) ... [2021-02-24 04:26:52,430 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2021-02-24 04:26:52,438 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:26:52,444 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:26:52,465 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:26:52,494 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:26:52,494 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:26:52,494 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:26:52,494 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:26:52,494 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:26:52,495 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:26:52,495 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:26:52,495 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:26:52,525 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states. [2021-02-24 04:26:52,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-02-24 04:26:52,551 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:26:52,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:26:52,553 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:26:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:26:52,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1152266589, now seen corresponding path program 1 times [2021-02-24 04:26:52,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:26:52,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732025544] [2021-02-24 04:26:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:26:52,658 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:26:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:53,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:53,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:26:53,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:53,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:26:53,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:53,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:26:53,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:53,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:53,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:26:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:53,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:53,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:53,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:53,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:26:53,389 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 04:26:53,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732025544] [2021-02-24 04:26:53,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:26:53,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:26:53,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340679008] [2021-02-24 04:26:53,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:26:53,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:26:53,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:26:53,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:26:53,419 INFO L87 Difference]: Start difference. First operand 534 states. Second operand 4 states. [2021-02-24 04:26:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:26:55,943 INFO L93 Difference]: Finished difference Result 1349 states and 1747 transitions. [2021-02-24 04:26:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:26:55,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2021-02-24 04:26:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:26:55,978 INFO L225 Difference]: With dead ends: 1349 [2021-02-24 04:26:55,978 INFO L226 Difference]: Without dead ends: 749 [2021-02-24 04:26:55,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:26:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-02-24 04:26:56,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 672. [2021-02-24 04:26:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2021-02-24 04:26:56,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 788 transitions. [2021-02-24 04:26:56,262 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 788 transitions. Word has length 145 [2021-02-24 04:26:56,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:26:56,263 INFO L480 AbstractCegarLoop]: Abstraction has 672 states and 788 transitions. [2021-02-24 04:26:56,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:26:56,264 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 788 transitions. [2021-02-24 04:26:56,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-24 04:26:56,272 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:26:56,272 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:26:56,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:26:56,273 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:26:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:26:56,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2096167395, now seen corresponding path program 1 times [2021-02-24 04:26:56,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:26:56,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525284069] [2021-02-24 04:26:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:26:56,338 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-24 04:26:56,363 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-24 04:26:56,373 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-24 04:26:56,380 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-24 04:26:56,421 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-24 04:26:56,434 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-24 04:26:56,442 WARN L141 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size [2021-02-24 04:26:56,448 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-24 04:26:56,452 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:56,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:26:56,462 WARN L147 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size 83 [2021-02-24 04:26:56,466 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-24 04:26:56,472 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-24 04:26:56,476 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-24 04:26:56,482 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-24 04:26:56,516 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-24 04:26:56,518 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-24 04:26:56,522 WARN L141 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size [2021-02-24 04:26:56,524 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-24 04:26:56,526 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:56,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:26:56,532 WARN L147 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size 83 [2021-02-24 04:26:56,537 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-24 04:26:56,546 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-24 04:26:56,549 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-24 04:26:56,556 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-24 04:26:56,590 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-24 04:26:56,593 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-24 04:26:56,596 WARN L141 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size [2021-02-24 04:26:56,598 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-24 04:26:56,600 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:56,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:26:56,606 WARN L147 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size 83 [2021-02-24 04:26:56,608 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-24 04:26:56,613 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-24 04:26:56,616 WARN L141 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-02-24 04:26:56,621 WARN L147 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size 60 [2021-02-24 04:26:56,657 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-24 04:26:56,660 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-24 04:26:56,663 WARN L141 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size [2021-02-24 04:26:56,665 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-24 04:26:56,667 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:56,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:26:56,673 WARN L147 QuantifierPusher]: treesize reduction 7, result has 92.2 percent of original size 83 [2021-02-24 04:26:56,674 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:26:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:56,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:26:56,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:26:56,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:26:56,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:26:56,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:26:56,900 WARN L141 QuantifierPusher]: treesize reduction 20, result has 16.7 percent of original size [2021-02-24 04:26:56,901 WARN L147 QuantifierPusher]: treesize reduction 20, result has 16.7 percent of original size 4 [2021-02-24 04:26:56,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:26:56,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:56,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:26:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:26:57,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:26:57,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:26:57,136 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 04:26:57,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-24 04:26:57,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-24 04:26:57,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:26:57,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-24 04:26:57,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:26:57,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-24 04:26:57,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-24 04:26:57,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-02-24 04:26:57,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-02-24 04:26:57,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-02-24 04:26:57,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-02-24 04:26:57,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-02-24 04:26:57,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-02-24 04:26:57,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-02-24 04:26:57,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-02-24 04:26:57,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-02-24 04:26:57,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:57,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:57,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-24 04:26:57,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-02-24 04:26:57,931 WARN L141 QuantifierPusher]: treesize reduction 97, result has 44.6 percent of original size [2021-02-24 04:26:57,934 WARN L147 QuantifierPusher]: treesize reduction 97, result has 44.6 percent of original size 78 [2021-02-24 04:26:58,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:58,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-24 04:26:58,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:58,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:26:58,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:58,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:26:58,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-24 04:26:58,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:58,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 04:26:58,199 WARN L141 QuantifierPusher]: treesize reduction -2, result has 106.5 percent of original size [2021-02-24 04:26:58,200 WARN L147 QuantifierPusher]: treesize reduction -2, result has 106.5 percent of original size 33 [2021-02-24 04:26:58,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:58,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:26:58,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:58,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-24 04:26:58,314 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-24 04:26:58,315 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-24 04:26:58,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:58,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:26:58,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:26:58,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:26:58,440 WARN L141 QuantifierPusher]: treesize reduction 28, result has 3.4 percent of original size [2021-02-24 04:26:58,441 WARN L147 QuantifierPusher]: treesize reduction 28, result has 3.4 percent of original size 1 [2021-02-24 04:26:58,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525284069] [2021-02-24 04:26:58,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:26:58,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-24 04:26:58,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010995567] [2021-02-24 04:26:58,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-24 04:26:58,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:26:58,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-24 04:26:58,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-02-24 04:26:58,445 INFO L87 Difference]: Start difference. First operand 672 states and 788 transitions. Second operand 22 states. [2021-02-24 04:26:58,946 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 97 [2021-02-24 04:26:59,216 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 99 [2021-02-24 04:26:59,473 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 97 [2021-02-24 04:26:59,721 WARN L202 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 104 [2021-02-24 04:27:00,027 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 104 [2021-02-24 04:27:00,316 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 106 [2021-02-24 04:27:00,659 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 126 [2021-02-24 04:27:01,241 WARN L202 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 129 [2021-02-24 04:27:01,563 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-24 04:27:01,826 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2021-02-24 04:27:03,150 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-02-24 04:27:03,482 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-02-24 04:27:03,746 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-02-24 04:27:04,172 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-02-24 04:27:10,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:27:10,881 INFO L93 Difference]: Finished difference Result 2257 states and 2833 transitions. [2021-02-24 04:27:10,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-24 04:27:10,883 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 166 [2021-02-24 04:27:10,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:27:10,898 INFO L225 Difference]: With dead ends: 2257 [2021-02-24 04:27:10,899 INFO L226 Difference]: Without dead ends: 1617 [2021-02-24 04:27:10,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=352, Invalid=1628, Unknown=0, NotChecked=0, Total=1980 [2021-02-24 04:27:10,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-02-24 04:27:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1362. [2021-02-24 04:27:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1362 states. [2021-02-24 04:27:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1707 transitions. [2021-02-24 04:27:11,268 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1707 transitions. Word has length 166 [2021-02-24 04:27:11,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:27:11,269 INFO L480 AbstractCegarLoop]: Abstraction has 1362 states and 1707 transitions. [2021-02-24 04:27:11,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-24 04:27:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1707 transitions. [2021-02-24 04:27:11,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-02-24 04:27:11,277 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:27:11,277 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:11,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:27:11,278 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:27:11,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:27:11,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1216040409, now seen corresponding path program 1 times [2021-02-24 04:27:11,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:27:11,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342564609] [2021-02-24 04:27:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:27:11,331 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 27