/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/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:47:56,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:47:56,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:47:56,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:47:56,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:47:56,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:47:56,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:47:56,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:47:56,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:47:56,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:47:56,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:47:56,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:47:56,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:47:56,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:47:56,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:47:56,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:47:56,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:47:56,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:47:56,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:47:56,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:47:56,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:47:56,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:47:56,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:47:56,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:47:56,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:47:56,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:47:56,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:47:56,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:47:56,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:47:56,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:47:56,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:47:56,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:47:56,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:47:56,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:47:56,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:47:56,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:47:56,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:47:56,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:47:56,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:47:56,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:47:56,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:47:56,367 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 04:47:56,379 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:47:56,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:47:56,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:47:56,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:47:56,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:47:56,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:47:56,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:47:56,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:47:56,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:47:56,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:47:56,382 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:47:56,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:47:56,382 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:47:56,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:47:56,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:47:56,383 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:47:56,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:47:56,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:47:56,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:47:56,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:47:56,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:47:56,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:47:56,385 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:47:56,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:47:56,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:47:56,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:47:56,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:47:56,753 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:47:56,753 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:47:56,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2021-02-24 04:47:56,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdada37f6/9f85bea1c8da48aa9fabc7ca9bd01f41/FLAGf872f0c7d [2021-02-24 04:47:57,461 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:47:57,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2021-02-24 04:47:57,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdada37f6/9f85bea1c8da48aa9fabc7ca9bd01f41/FLAGf872f0c7d [2021-02-24 04:47:57,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdada37f6/9f85bea1c8da48aa9fabc7ca9bd01f41 [2021-02-24 04:47:57,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:47:57,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:47:57,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:57,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:47:57,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:47:57,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:57" (1/1) ... [2021-02-24 04:47:57,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2323acea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:57, skipping insertion in model container [2021-02-24 04:47:57,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:57" (1/1) ... [2021-02-24 04:47:57,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:47:57,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:47:58,111 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1126,1139] [2021-02-24 04:47:58,133 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1880,1893] [2021-02-24 04:47:58,142 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2415,2428] [2021-02-24 04:47:58,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:58,164 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:47:58,195 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1126,1139] [2021-02-24 04:47:58,212 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1880,1893] [2021-02-24 04:47:58,217 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2415,2428] [2021-02-24 04:47:58,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:58,257 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:47:58,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:58 WrapperNode [2021-02-24 04:47:58,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:58,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:47:58,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:47:58,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:47:58,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:58" (1/1) ... [2021-02-24 04:47:58,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:58" (1/1) ... [2021-02-24 04:47:58,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:58" (1/1) ... [2021-02-24 04:47:58,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:58" (1/1) ... [2021-02-24 04:47:58,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:58" (1/1) ... [2021-02-24 04:47:58,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:58" (1/1) ... [2021-02-24 04:47:58,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:58" (1/1) ... [2021-02-24 04:47:58,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:47:58,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:47:58,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:47:58,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:47:58,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:58" (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 04:47:58,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:47:58,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:47:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:47:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:47:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:47:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:47:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:47:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:47:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:47:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:47:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:47:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-24 04:47:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:47:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:47:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:47:58,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:47:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:47:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:47:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:47:58,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:47:58,924 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:47:58,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:58 BoogieIcfgContainer [2021-02-24 04:47:58,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:47:58,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:47:58,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:47:58,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:47:58,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:47:57" (1/3) ... [2021-02-24 04:47:58,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6089114f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:58, skipping insertion in model container [2021-02-24 04:47:58,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:58" (2/3) ... [2021-02-24 04:47:58,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6089114f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:58, skipping insertion in model container [2021-02-24 04:47:58,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:58" (3/3) ... [2021-02-24 04:47:58,935 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2021-02-24 04:47:58,942 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:47:58,946 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-24 04:47:58,964 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-24 04:47:58,989 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:47:58,989 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:47:58,989 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:47:58,989 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:47:58,989 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:47:58,990 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:47:58,990 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:47:58,990 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:47:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2021-02-24 04:47:59,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 04:47:59,018 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:59,019 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] [2021-02-24 04:47:59,020 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:59,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:59,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1631991453, now seen corresponding path program 1 times [2021-02-24 04:47:59,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:59,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923203444] [2021-02-24 04:47:59,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:59,124 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:59,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:59,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:59,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:59,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:47:59,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:59,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:59,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:59,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:59,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:59,444 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 04:47:59,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923203444] [2021-02-24 04:47:59,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:59,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:47:59,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030725894] [2021-02-24 04:47:59,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:47:59,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:59,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:47:59,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:47:59,493 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 4 states. [2021-02-24 04:47:59,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:59,882 INFO L93 Difference]: Finished difference Result 215 states and 241 transitions. [2021-02-24 04:47:59,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:47:59,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2021-02-24 04:47:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:59,898 INFO L225 Difference]: With dead ends: 215 [2021-02-24 04:47:59,899 INFO L226 Difference]: Without dead ends: 115 [2021-02-24 04:47:59,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:47:59,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-02-24 04:47:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2021-02-24 04:47:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-24 04:47:59,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2021-02-24 04:47:59,957 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 35 [2021-02-24 04:47:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:59,957 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2021-02-24 04:47:59,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:47:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2021-02-24 04:47:59,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:47:59,960 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:59,961 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] [2021-02-24 04:47:59,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:47:59,961 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:59,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:59,962 INFO L82 PathProgramCache]: Analyzing trace with hash 510759303, now seen corresponding path program 1 times [2021-02-24 04:47:59,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:59,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762765715] [2021-02-24 04:47:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:59,972 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:48:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:00,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:00,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:00,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:00,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:48:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:00,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,178 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 04:48:00,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762765715] [2021-02-24 04:48:00,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:48:00,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:48:00,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910372191] [2021-02-24 04:48:00,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:48:00,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:48:00,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:48:00,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:48:00,182 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand 6 states. [2021-02-24 04:48:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:48:00,396 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2021-02-24 04:48:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:48:00,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2021-02-24 04:48:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:48:00,399 INFO L225 Difference]: With dead ends: 132 [2021-02-24 04:48:00,399 INFO L226 Difference]: Without dead ends: 130 [2021-02-24 04:48:00,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:48:00,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-02-24 04:48:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 86. [2021-02-24 04:48:00,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-24 04:48:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2021-02-24 04:48:00,416 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 36 [2021-02-24 04:48:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:48:00,417 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2021-02-24 04:48:00,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:48:00,417 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2021-02-24 04:48:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:48:00,419 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:48:00,419 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] [2021-02-24 04:48:00,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:48:00,419 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:48:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:48:00,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2004335176, now seen corresponding path program 1 times [2021-02-24 04:48:00,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:48:00,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597555786] [2021-02-24 04:48:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:48:00,423 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:48:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:00,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:48:00,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:48:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:00,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,512 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 04:48:00,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597555786] [2021-02-24 04:48:00,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:48:00,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:48:00,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498041329] [2021-02-24 04:48:00,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:48:00,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:48:00,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:48:00,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:48:00,514 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 4 states. [2021-02-24 04:48:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:48:00,691 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2021-02-24 04:48:00,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:48:00,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2021-02-24 04:48:00,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:48:00,693 INFO L225 Difference]: With dead ends: 162 [2021-02-24 04:48:00,693 INFO L226 Difference]: Without dead ends: 111 [2021-02-24 04:48:00,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:48:00,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-24 04:48:00,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 78. [2021-02-24 04:48:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 04:48:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-02-24 04:48:00,706 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 36 [2021-02-24 04:48:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:48:00,707 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-02-24 04:48:00,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:48:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-02-24 04:48:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 04:48:00,708 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:48:00,709 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] [2021-02-24 04:48:00,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:48:00,709 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:48:00,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:48:00,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1679437122, now seen corresponding path program 1 times [2021-02-24 04:48:00,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:48:00,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374596132] [2021-02-24 04:48:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:48:00,713 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:48:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:00,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:00,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:48:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:00,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:00,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:00,817 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 04:48:00,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374596132] [2021-02-24 04:48:00,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:48:00,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:48:00,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020572400] [2021-02-24 04:48:00,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:48:00,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:48:00,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:48:00,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:48:00,819 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 4 states. [2021-02-24 04:48:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:48:00,929 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2021-02-24 04:48:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:48:00,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2021-02-24 04:48:00,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:48:00,931 INFO L225 Difference]: With dead ends: 106 [2021-02-24 04:48:00,931 INFO L226 Difference]: Without dead ends: 89 [2021-02-24 04:48:00,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:48:00,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-24 04:48:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2021-02-24 04:48:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 04:48:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-02-24 04:48:00,942 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 38 [2021-02-24 04:48:00,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:48:00,943 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-02-24 04:48:00,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:48:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-02-24 04:48:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-24 04:48:00,945 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:48:00,945 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] [2021-02-24 04:48:00,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:48:00,945 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:48:00,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:48:00,946 INFO L82 PathProgramCache]: Analyzing trace with hash 2146049076, now seen corresponding path program 1 times [2021-02-24 04:48:00,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:48:00,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395691688] [2021-02-24 04:48:00,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:48:00,949 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:48:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:01,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:01,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:48:01,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:48:01,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:48:01,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:48:01,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:48:01,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:48:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:01,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:01,191 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 04:48:01,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395691688] [2021-02-24 04:48:01,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:48:01,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:48:01,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062094783] [2021-02-24 04:48:01,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:48:01,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:48:01,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:48:01,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:48:01,197 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 6 states. [2021-02-24 04:48:01,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:48:01,424 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2021-02-24 04:48:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:48:01,425 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2021-02-24 04:48:01,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:48:01,426 INFO L225 Difference]: With dead ends: 186 [2021-02-24 04:48:01,427 INFO L226 Difference]: Without dead ends: 144 [2021-02-24 04:48:01,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:48:01,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-02-24 04:48:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2021-02-24 04:48:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-02-24 04:48:01,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2021-02-24 04:48:01,440 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 57 [2021-02-24 04:48:01,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:48:01,440 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2021-02-24 04:48:01,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:48:01,441 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2021-02-24 04:48:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-24 04:48:01,442 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:48:01,442 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] [2021-02-24 04:48:01,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:48:01,443 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:48:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:48:01,443 INFO L82 PathProgramCache]: Analyzing trace with hash 2038639544, now seen corresponding path program 1 times [2021-02-24 04:48:01,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:48:01,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945554386] [2021-02-24 04:48:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:48:01,446 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:48:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:01,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:01,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:01,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:01,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:48:01,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:01,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:01,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:01,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:01,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:01,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:48:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:01,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:01,593 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 04:48:01,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945554386] [2021-02-24 04:48:01,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:48:01,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:48:01,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125804963] [2021-02-24 04:48:01,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:48:01,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:48:01,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:48:01,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:48:01,595 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 9 states. [2021-02-24 04:48:01,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:48:01,883 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2021-02-24 04:48:01,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 04:48:01,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2021-02-24 04:48:01,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:48:01,885 INFO L225 Difference]: With dead ends: 162 [2021-02-24 04:48:01,885 INFO L226 Difference]: Without dead ends: 160 [2021-02-24 04:48:01,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-02-24 04:48:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-02-24 04:48:01,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 97. [2021-02-24 04:48:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-24 04:48:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2021-02-24 04:48:01,901 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 58 [2021-02-24 04:48:01,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:48:01,901 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2021-02-24 04:48:01,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:48:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2021-02-24 04:48:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-24 04:48:01,903 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:48:01,903 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] [2021-02-24 04:48:01,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:48:01,903 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:48:01,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:48:01,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1267812039, now seen corresponding path program 1 times [2021-02-24 04:48:01,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:48:01,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577052240] [2021-02-24 04:48:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:48:01,907 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:48:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:01,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:01,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:48:01,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:48:01,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:48:01,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:48:01,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:48:01,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:01,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:48:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:02,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:02,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:02,052 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 04:48:02,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577052240] [2021-02-24 04:48:02,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:48:02,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:48:02,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916851027] [2021-02-24 04:48:02,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:48:02,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:48:02,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:48:02,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:48:02,055 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 6 states. [2021-02-24 04:48:02,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:48:02,277 INFO L93 Difference]: Finished difference Result 174 states and 181 transitions. [2021-02-24 04:48:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:48:02,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2021-02-24 04:48:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:48:02,279 INFO L225 Difference]: With dead ends: 174 [2021-02-24 04:48:02,279 INFO L226 Difference]: Without dead ends: 127 [2021-02-24 04:48:02,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:48:02,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-02-24 04:48:02,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2021-02-24 04:48:02,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-24 04:48:02,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2021-02-24 04:48:02,296 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 58 [2021-02-24 04:48:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:48:02,296 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2021-02-24 04:48:02,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:48:02,297 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2021-02-24 04:48:02,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-24 04:48:02,297 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:48:02,298 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] [2021-02-24 04:48:02,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:48:02,298 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:48:02,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:48:02,299 INFO L82 PathProgramCache]: Analyzing trace with hash -742105895, now seen corresponding path program 1 times [2021-02-24 04:48:02,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:48:02,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234082878] [2021-02-24 04:48:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:48:02,301 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:48:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:02,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:02,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:02,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:02,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:48:02,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:02,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 04:48:02,572 WARN L141 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-02-24 04:48:02,574 WARN L147 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size 51 [2021-02-24 04:48:02,601 WARN L141 QuantifierPusher]: treesize reduction 102, result has 39.6 percent of original size [2021-02-24 04:48:02,602 WARN L147 QuantifierPusher]: treesize reduction 102, result has 39.6 percent of original size 67 [2021-02-24 04:48:02,642 WARN L141 QuantifierPusher]: treesize reduction 179, result has 31.7 percent of original size [2021-02-24 04:48:02,647 WARN L147 QuantifierPusher]: treesize reduction 179, result has 31.7 percent of original size 83 [2021-02-24 04:48:02,704 WARN L141 QuantifierPusher]: treesize reduction 370, result has 23.9 percent of original size [2021-02-24 04:48:02,709 WARN L147 QuantifierPusher]: treesize reduction 370, result has 23.9 percent of original size 116 [2021-02-24 04:48:02,783 WARN L141 QuantifierPusher]: treesize reduction 656, result has 49.8 percent of original size [2021-02-24 04:48:02,799 WARN L147 QuantifierPusher]: treesize reduction 656, result has 49.8 percent of original size 651 [2021-02-24 04:48:02,976 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 44 [2021-02-24 04:48:02,986 WARN L141 QuantifierPusher]: treesize reduction 63, result has 87.3 percent of original size [2021-02-24 04:48:02,991 WARN L147 QuantifierPusher]: treesize reduction 63, result has 87.3 percent of original size 434 [2021-02-24 04:48:03,215 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-02-24 04:48:03,223 WARN L141 QuantifierPusher]: treesize reduction 53, result has 89.1 percent of original size [2021-02-24 04:48:03,226 WARN L147 QuantifierPusher]: treesize reduction 53, result has 89.1 percent of original size 433 [2021-02-24 04:48:03,356 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2021-02-24 04:48:03,361 WARN L141 QuantifierPusher]: treesize reduction 43, result has 88.5 percent of original size [2021-02-24 04:48:03,364 WARN L147 QuantifierPusher]: treesize reduction 43, result has 88.5 percent of original size 331 [2021-02-24 04:48:03,457 WARN L141 QuantifierPusher]: treesize reduction 21, result has 82.8 percent of original size [2021-02-24 04:48:03,458 WARN L147 QuantifierPusher]: treesize reduction 21, result has 82.8 percent of original size 101 [2021-02-24 04:48:03,495 WARN L141 QuantifierPusher]: treesize reduction 32, result has 67.3 percent of original size [2021-02-24 04:48:03,496 WARN L147 QuantifierPusher]: treesize reduction 32, result has 67.3 percent of original size 66 [2021-02-24 04:48:03,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:03,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:03,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:03,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:48:03,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:03,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:03,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:48:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:48:03,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:48:03,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:48:03,657 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 04:48:03,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234082878] [2021-02-24 04:48:03,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:48:03,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-24 04:48:03,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285893916] [2021-02-24 04:48:03,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 04:48:03,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:48:03,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 04:48:03,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:48:03,659 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand 17 states. [2021-02-24 04:48:04,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:48:04,773 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2021-02-24 04:48:04,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-24 04:48:04,773 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2021-02-24 04:48:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:48:04,774 INFO L225 Difference]: With dead ends: 152 [2021-02-24 04:48:04,774 INFO L226 Difference]: Without dead ends: 105 [2021-02-24 04:48:04,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2021-02-24 04:48:04,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-02-24 04:48:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2021-02-24 04:48:04,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-24 04:48:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2021-02-24 04:48:04,794 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 60 [2021-02-24 04:48:04,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:48:04,795 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2021-02-24 04:48:04,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 04:48:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2021-02-24 04:48:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-24 04:48:04,796 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:48:04,797 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] [2021-02-24 04:48:04,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:48:04,797 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:48:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:48:04,798 INFO L82 PathProgramCache]: Analyzing trace with hash -582759126, now seen corresponding path program 1 times [2021-02-24 04:48:04,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:48:04,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59334018] [2021-02-24 04:48:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY