/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/watermelon.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:04:34,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:04:34,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:04:34,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 08:04:34,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:04:34,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:04:34,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:04:34,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:04:34,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:04:34,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:04:34,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:04:34,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:04:34,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:04:34,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:04:34,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:04:34,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:04:34,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 08:04:34,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 08:04:34,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 08:04:34,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 08:04:34,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 08:04:34,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 08:04:34,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 08:04:34,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 08:04:34,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 08:04:34,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:04:34,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:04:34,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:04:34,577 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 08:04:34,593 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:04:34,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:04:34,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:04:34,596 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:04:34,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:04:34,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:04:34,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:04:34,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:04:34,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:04:34,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:04:34,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:04:34,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:04:34,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:04:34,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:04:34,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:04:34,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:04:34,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:04:34,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:04:34,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:04:34,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:04:34,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:04:34,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:04:34,599 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:04:34,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:04:34,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:04:34,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:04:34,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:04:34,989 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:04:34,990 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:04:34,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/watermelon.c [2021-05-01 08:04:35,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1144314a3/fd8e7c27c2c142659dfeb48457d746da/FLAGcaf378beb [2021-05-01 08:04:35,653 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:04:35,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/watermelon.c [2021-05-01 08:04:35,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1144314a3/fd8e7c27c2c142659dfeb48457d746da/FLAGcaf378beb [2021-05-01 08:04:36,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1144314a3/fd8e7c27c2c142659dfeb48457d746da [2021-05-01 08:04:36,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:04:36,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:04:36,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:04:36,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:04:36,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:04:36,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:04:36" (1/1) ... [2021-05-01 08:04:36,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd13aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:04:36, skipping insertion in model container [2021-05-01 08:04:36,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:04:36" (1/1) ... [2021-05-01 08:04:36,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:04:36,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:04:36,215 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/watermelon.c[373,386] [2021-05-01 08:04:36,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:04:36,257 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:04:36,303 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/watermelon.c[373,386] [2021-05-01 08:04:36,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:04:36,370 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:04:36,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:04:36 WrapperNode [2021-05-01 08:04:36,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:04:36,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:04:36,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:04:36,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:04:36,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:04:36" (1/1) ... [2021-05-01 08:04:36,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:04:36" (1/1) ... [2021-05-01 08:04:36,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:04:36" (1/1) ... [2021-05-01 08:04:36,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:04:36" (1/1) ... [2021-05-01 08:04:36,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:04:36" (1/1) ... [2021-05-01 08:04:36,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:04:36" (1/1) ... [2021-05-01 08:04:36,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:04:36" (1/1) ... [2021-05-01 08:04:36,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:04:36,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:04:36,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:04:36,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:04:36,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:04:36" (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 [2021-05-01 08:04:36,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:04:36,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:04:36,522 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:04:36,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:04:36,522 INFO L138 BoogieDeclarations]: Found implementation of procedure correct_version [2021-05-01 08:04:36,522 INFO L138 BoogieDeclarations]: Found implementation of procedure student_version [2021-05-01 08:04:36,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:04:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 08:04:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:04:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:04:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:04:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-01 08:04:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:04:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure correct_version [2021-05-01 08:04:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure student_version [2021-05-01 08:04:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:04:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:04:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:04:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:04:36,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:04:36,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:04:36,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:04:36,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:04:36,956 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-01 08:04:36,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:04:36 BoogieIcfgContainer [2021-05-01 08:04:36,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:04:36,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:04:36,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:04:36,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:04:36,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:04:36" (1/3) ... [2021-05-01 08:04:36,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594ceb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:04:36, skipping insertion in model container [2021-05-01 08:04:36,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:04:36" (2/3) ... [2021-05-01 08:04:36,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594ceb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:04:36, skipping insertion in model container [2021-05-01 08:04:36,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:04:36" (3/3) ... [2021-05-01 08:04:36,966 INFO L111 eAbstractionObserver]: Analyzing ICFG watermelon.c [2021-05-01 08:04:36,971 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:04:36,976 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:04:36,998 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:04:37,032 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:04:37,033 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:04:37,033 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:04:37,033 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:04:37,033 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:04:37,033 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:04:37,033 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:04:37,034 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:04:37,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 29 states have internal predecessors, (38), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 08:04:37,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-01 08:04:37,076 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:04:37,077 INFO L519 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] [2021-05-01 08:04:37,077 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:04:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:04:37,087 INFO L82 PathProgramCache]: Analyzing trace with hash 345664661, now seen corresponding path program 1 times [2021-05-01 08:04:37,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:04:37,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148716995] [2021-05-01 08:04:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:04:37,171 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:04:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:37,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:37,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:37,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:37,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:37,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:37,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 08:04:37,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 08:04:37,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:37,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:04:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:37,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:37,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:04:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:37,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:37,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:37,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-05-01 08:04:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:37,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:37,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:37,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:37,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:04:37,801 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:04:37,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148716995] [2021-05-01 08:04:37,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1148716995] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:04:37,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:04:37,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-01 08:04:37,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667821730] [2021-05-01 08:04:37,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 08:04:37,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:04:37,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 08:04:37,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-05-01 08:04:37,830 INFO L87 Difference]: Start difference. First operand has 39 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 29 states have internal predecessors, (38), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:04:39,029 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2021-05-01 08:04:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-01 08:04:39,032 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-05-01 08:04:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:04:39,044 INFO L225 Difference]: With dead ends: 91 [2021-05-01 08:04:39,044 INFO L226 Difference]: Without dead ends: 42 [2021-05-01 08:04:39,048 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 829.3ms TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-05-01 08:04:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-01 08:04:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-05-01 08:04:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 30 states have internal predecessors, (34), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-01 08:04:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2021-05-01 08:04:39,099 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 25 [2021-05-01 08:04:39,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:04:39,100 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2021-05-01 08:04:39,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:39,100 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2021-05-01 08:04:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-01 08:04:39,102 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:04:39,102 INFO L519 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] [2021-05-01 08:04:39,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:04:39,103 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:04:39,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:04:39,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1324779677, now seen corresponding path program 1 times [2021-05-01 08:04:39,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:04:39,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696550925] [2021-05-01 08:04:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:04:39,107 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:04:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:39,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:04:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:39,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:04:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:39,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-05-01 08:04:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:39,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:39,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:04:39,201 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:04:39,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696550925] [2021-05-01 08:04:39,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [696550925] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:04:39,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:04:39,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 08:04:39,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923223377] [2021-05-01 08:04:39,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 08:04:39,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:04:39,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 08:04:39,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 08:04:39,205 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-01 08:04:39,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:04:39,336 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2021-05-01 08:04:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 08:04:39,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-05-01 08:04:39,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:04:39,338 INFO L225 Difference]: With dead ends: 55 [2021-05-01 08:04:39,339 INFO L226 Difference]: Without dead ends: 42 [2021-05-01 08:04:39,340 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 08:04:39,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-01 08:04:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-05-01 08:04:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-01 08:04:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-05-01 08:04:39,353 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 27 [2021-05-01 08:04:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:04:39,353 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-05-01 08:04:39,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-01 08:04:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-05-01 08:04:39,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-01 08:04:39,355 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:04:39,355 INFO L519 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] [2021-05-01 08:04:39,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 08:04:39,355 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:04:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:04:39,356 INFO L82 PathProgramCache]: Analyzing trace with hash -855151641, now seen corresponding path program 1 times [2021-05-01 08:04:39,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:04:39,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398309258] [2021-05-01 08:04:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:04:39,359 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:04:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:39,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:04:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:39,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:04:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:39,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:39,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-01 08:04:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:39,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:04:39,449 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:04:39,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398309258] [2021-05-01 08:04:39,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [398309258] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:04:39,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:04:39,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 08:04:39,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352270461] [2021-05-01 08:04:39,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 08:04:39,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:04:39,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 08:04:39,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 08:04:39,451 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:04:39,605 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2021-05-01 08:04:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 08:04:39,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-05-01 08:04:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:04:39,608 INFO L225 Difference]: With dead ends: 72 [2021-05-01 08:04:39,608 INFO L226 Difference]: Without dead ends: 43 [2021-05-01 08:04:39,609 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 08:04:39,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-01 08:04:39,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-05-01 08:04:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-01 08:04:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-05-01 08:04:39,636 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 27 [2021-05-01 08:04:39,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:04:39,636 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-05-01 08:04:39,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:39,636 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-05-01 08:04:39,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-01 08:04:39,638 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:04:39,638 INFO L519 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] [2021-05-01 08:04:39,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 08:04:39,638 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:04:39,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:04:39,639 INFO L82 PathProgramCache]: Analyzing trace with hash 743790053, now seen corresponding path program 1 times [2021-05-01 08:04:39,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:04:39,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536134774] [2021-05-01 08:04:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:04:39,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:39,683 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_student_version_~i~1_10 v_student_version_~w_8) InVars {student_version_~i~1=v_student_version_~i~1_10, student_version_~w=v_student_version_~w_8} OutVars{student_version_~i~1=v_student_version_~i~1_10, student_version_~w=v_student_version_~w_8} AuxVars[] AssignedVars[] [2021-05-01 08:04:39,700 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:04:39,706 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,710 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,715 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,717 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,732 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:39,735 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,737 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:39,744 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,746 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,750 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,753 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-05-01 08:04:39,757 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,761 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:04:39,790 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.8 percent of original size [2021-05-01 08:04:39,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 08:04:39,794 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:04:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:39,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,875 INFO L142 QuantifierPusher]: treesize reduction 11, result has 72.5 percent of original size [2021-05-01 08:04:39,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 08:04:39,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:04:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:39,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:39,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:04:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:39,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:39,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:39,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-05-01 08:04:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:40,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:40,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:40,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:04:40,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:40,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-05-01 08:04:40,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:40,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:04:40,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 08:04:40,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:40,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 08:04:40,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:40,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:40,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 08:04:40,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:40,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:40,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 08:04:40,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:40,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:40,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 08:04:40,229 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:04:40,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536134774] [2021-05-01 08:04:40,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1536134774] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:04:40,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:04:40,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 08:04:40,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892465097] [2021-05-01 08:04:40,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 08:04:40,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:04:40,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 08:04:40,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-05-01 08:04:40,232 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:40,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:04:40,672 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-05-01 08:04:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-01 08:04:40,673 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-01 08:04:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:04:40,675 INFO L225 Difference]: With dead ends: 56 [2021-05-01 08:04:40,675 INFO L226 Difference]: Without dead ends: 45 [2021-05-01 08:04:40,676 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 416.2ms TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-05-01 08:04:40,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-01 08:04:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-05-01 08:04:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-01 08:04:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-05-01 08:04:40,687 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2021-05-01 08:04:40,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:04:40,688 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-05-01 08:04:40,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:40,688 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-05-01 08:04:40,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-01 08:04:40,689 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:04:40,689 INFO L519 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] [2021-05-01 08:04:40,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 08:04:40,689 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:04:40,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:04:40,690 INFO L82 PathProgramCache]: Analyzing trace with hash 198429957, now seen corresponding path program 1 times [2021-05-01 08:04:40,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:04:40,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655889689] [2021-05-01 08:04:40,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:04:40,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:40,697 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_correct_version_~i~0_10 v_correct_version_~w_8) InVars {correct_version_~i~0=v_correct_version_~i~0_10, correct_version_~w=v_correct_version_~w_8} OutVars{correct_version_~i~0=v_correct_version_~i~0_10, correct_version_~w=v_correct_version_~w_8} AuxVars[] AssignedVars[] [2021-05-01 08:04:40,701 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:04:40,703 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,708 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,711 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:40,713 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:40,718 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,721 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,724 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-05-01 08:04:40,727 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,732 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,735 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,738 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,740 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,742 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:04:40,759 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.8 percent of original size [2021-05-01 08:04:40,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 08:04:40,761 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:04:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:40,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:40,793 INFO L142 QuantifierPusher]: treesize reduction 11, result has 72.5 percent of original size [2021-05-01 08:04:40,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 08:04:40,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:04:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:40,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:40,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:04:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:40,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:40,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:40,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:40,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:04:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:40,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:40,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:04:40,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:40,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 08:04:40,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:40,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:04:40,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 08:04:40,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:40,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 08:04:40,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:40,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:40,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:40,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 08:04:41,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:41,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:41,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 08:04:41,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:41,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:41,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 08:04:41,089 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:04:41,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655889689] [2021-05-01 08:04:41,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [655889689] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:04:41,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:04:41,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 08:04:41,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263107393] [2021-05-01 08:04:41,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 08:04:41,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:04:41,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 08:04:41,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-05-01 08:04:41,093 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:04:41,448 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-05-01 08:04:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-01 08:04:41,449 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-01 08:04:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:04:41,450 INFO L225 Difference]: With dead ends: 51 [2021-05-01 08:04:41,450 INFO L226 Difference]: Without dead ends: 42 [2021-05-01 08:04:41,451 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 378.4ms TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-05-01 08:04:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-01 08:04:41,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-01 08:04:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-01 08:04:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-05-01 08:04:41,461 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 29 [2021-05-01 08:04:41,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:04:41,461 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-05-01 08:04:41,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-05-01 08:04:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 08:04:41,462 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:04:41,462 INFO L519 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] [2021-05-01 08:04:41,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-01 08:04:41,462 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:04:41,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:04:41,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1589989783, now seen corresponding path program 1 times [2021-05-01 08:04:41,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:04:41,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286561499] [2021-05-01 08:04:41,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:04:41,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:41,471 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_correct_version_~i~0_14 v_correct_version_~w_9) InVars {correct_version_~i~0=v_correct_version_~i~0_14, correct_version_~w=v_correct_version_~w_9} OutVars{correct_version_~i~0=v_correct_version_~i~0_14, correct_version_~w=v_correct_version_~w_9} AuxVars[] AssignedVars[] [2021-05-01 08:04:41,474 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:04:41,478 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,481 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,484 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,486 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,491 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:41,494 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,495 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:41,497 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:41,503 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,505 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,508 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,514 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,516 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:04:41,533 INFO L142 QuantifierPusher]: treesize reduction 7, result has 88.1 percent of original size [2021-05-01 08:04:41,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 08:04:41,534 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:04:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:41,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:41,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:41,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:04:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:41,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:41,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:04:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:41,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:41,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:04:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:41,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:41,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:41,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:41,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:04:41,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:41,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 08:04:41,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:41,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:41,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:41,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 10.0 percent of original size [2021-05-01 08:04:41,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:41,658 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:04:41,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286561499] [2021-05-01 08:04:41,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1286561499] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:04:41,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:04:41,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 08:04:41,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495661177] [2021-05-01 08:04:41,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-01 08:04:41,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:04:41,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-01 08:04:41,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-01 08:04:41,659 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-01 08:04:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:04:41,910 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2021-05-01 08:04:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 08:04:41,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2021-05-01 08:04:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:04:41,912 INFO L225 Difference]: With dead ends: 58 [2021-05-01 08:04:41,912 INFO L226 Difference]: Without dead ends: 45 [2021-05-01 08:04:41,913 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 167.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-05-01 08:04:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-01 08:04:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-05-01 08:04:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.125) internal successors, (36), 34 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-01 08:04:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-05-01 08:04:41,925 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 33 [2021-05-01 08:04:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:04:41,925 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-05-01 08:04:41,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-01 08:04:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-05-01 08:04:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-01 08:04:41,927 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:04:41,927 INFO L519 BasicCegarLoop]: trace histogram [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] [2021-05-01 08:04:41,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-01 08:04:41,927 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:04:41,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:04:41,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1518564121, now seen corresponding path program 2 times [2021-05-01 08:04:41,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:04:41,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573996557] [2021-05-01 08:04:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:04:41,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:41,935 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_correct_version_~i~0_18 v_correct_version_~w_10) InVars {correct_version_~i~0=v_correct_version_~i~0_18, correct_version_~w=v_correct_version_~w_10} OutVars{correct_version_~i~0=v_correct_version_~i~0_18, correct_version_~w=v_correct_version_~w_10} AuxVars[] AssignedVars[] [2021-05-01 08:04:41,941 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:04:41,944 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,948 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,951 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:41,952 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:41,958 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,961 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-05-01 08:04:41,964 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,967 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,971 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,975 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,978 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,980 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:41,982 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:04:42,000 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.8 percent of original size [2021-05-01 08:04:42,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 08:04:42,001 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:04:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:42,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:42,038 INFO L142 QuantifierPusher]: treesize reduction 11, result has 72.5 percent of original size [2021-05-01 08:04:42,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 08:04:42,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:42,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:04:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:42,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:42,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:04:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:42,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:42,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 08:04:42,167 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size [2021-05-01 08:04:42,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 08:04:42,187 INFO L142 QuantifierPusher]: treesize reduction 11, result has 64.5 percent of original size [2021-05-01 08:04:42,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-01 08:04:42,209 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 08:04:42,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:42,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:04:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:42,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:42,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:42,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:42,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:42,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:42,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:04:42,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:42,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 08:04:42,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 08:04:42,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:42,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-05-01 08:04:42,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 08:04:42,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 08:04:42,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:42,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 08:04:42,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:42,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:42,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 08:04:42,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:42,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:42,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 08:04:42,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:42,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:42,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:42,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 08:04:42,534 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:04:42,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573996557] [2021-05-01 08:04:42,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [573996557] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:04:42,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:04:42,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-01 08:04:42,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306756339] [2021-05-01 08:04:42,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-01 08:04:42,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:04:42,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-01 08:04:42,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2021-05-01 08:04:42,536 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:45,268 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 08:04:45,562 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-05-01 08:04:47,986 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2021-05-01 08:04:48,400 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2021-05-01 08:04:49,049 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2021-05-01 08:04:49,261 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-01 08:04:50,002 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-01 08:04:50,209 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-01 08:04:50,459 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:04:50,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:04:50,935 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2021-05-01 08:04:50,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 08:04:50,935 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-05-01 08:04:50,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:04:50,936 INFO L225 Difference]: With dead ends: 97 [2021-05-01 08:04:50,937 INFO L226 Difference]: Without dead ends: 66 [2021-05-01 08:04:50,938 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 3207.9ms TimeCoverageRelationStatistics Valid=160, Invalid=962, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 08:04:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-01 08:04:50,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2021-05-01 08:04:50,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 49 states have internal predecessors, (53), 7 states have call successors, (7), 5 states have call predecessors, (7), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-01 08:04:50,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2021-05-01 08:04:50,955 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 35 [2021-05-01 08:04:50,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:04:50,955 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2021-05-01 08:04:50,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2021-05-01 08:04:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-01 08:04:50,957 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:04:50,957 INFO L519 BasicCegarLoop]: trace histogram [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] [2021-05-01 08:04:50,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-01 08:04:50,957 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:04:50,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:04:50,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1072065907, now seen corresponding path program 1 times [2021-05-01 08:04:50,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:04:50,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013040044] [2021-05-01 08:04:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:04:50,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:50,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:50,978 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_correct_version_~i~0_22 v_correct_version_~w_11) InVars {correct_version_~i~0=v_correct_version_~i~0_22, correct_version_~w=v_correct_version_~w_11} OutVars{correct_version_~i~0=v_correct_version_~i~0_22, correct_version_~w=v_correct_version_~w_11} AuxVars[] AssignedVars[] [2021-05-01 08:04:50,982 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:04:50,993 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,005 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,013 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,015 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,030 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:51,040 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,041 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:51,046 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:51,059 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,069 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,080 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,091 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,092 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:04:51,183 INFO L142 QuantifierPusher]: treesize reduction 7, result has 88.1 percent of original size [2021-05-01 08:04:51,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 08:04:51,184 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:04:51,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:51,187 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (+ v_correct_version_~i~0_24 2) v_correct_version_~w_12) InVars {correct_version_~i~0=v_correct_version_~i~0_24, correct_version_~w=v_correct_version_~w_12} OutVars{correct_version_~i~0=v_correct_version_~i~0_24, correct_version_~w=v_correct_version_~w_12} AuxVars[] AssignedVars[] [2021-05-01 08:04:51,192 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size [2021-05-01 08:04:51,203 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,213 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,223 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,225 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,237 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:51,247 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,247 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:04:51,251 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 08:04:51,263 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,273 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,283 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,294 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,295 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size 56 [2021-05-01 08:04:51,374 INFO L142 QuantifierPusher]: treesize reduction 9, result has 85.5 percent of original size [2021-05-01 08:04:51,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 08:04:51,377 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:04:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:51,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:51,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:51,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:04:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:51,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:51,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:04:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:51,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:51,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:04:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:51,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:51,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:51,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:51,589 INFO L142 QuantifierPusher]: treesize reduction 5, result has 50.0 percent of original size [2021-05-01 08:04:51,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:51,621 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 08:04:51,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 08:04:51,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:04:51,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:51,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 08:04:51,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:51,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:51,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:51,796 INFO L142 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-05-01 08:04:51,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:51,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:51,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:51,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 08:04:51,800 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:04:51,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013040044] [2021-05-01 08:04:51,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2013040044] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:04:51,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:04:51,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-01 08:04:51,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992217808] [2021-05-01 08:04:51,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-01 08:04:51,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:04:51,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-01 08:04:51,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-05-01 08:04:51,804 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-01 08:04:52,494 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-05-01 08:04:52,956 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-01 08:04:53,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:04:53,131 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2021-05-01 08:04:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-01 08:04:53,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2021-05-01 08:04:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:04:53,133 INFO L225 Difference]: With dead ends: 69 [2021-05-01 08:04:53,134 INFO L226 Difference]: Without dead ends: 60 [2021-05-01 08:04:53,134 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1111.8ms TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-05-01 08:04:53,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-01 08:04:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-01 08:04:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 49 states have internal predecessors, (52), 7 states have call successors, (7), 5 states have call predecessors, (7), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-05-01 08:04:53,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2021-05-01 08:04:53,151 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 37 [2021-05-01 08:04:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:04:53,151 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2021-05-01 08:04:53,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-01 08:04:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2021-05-01 08:04:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-01 08:04:53,152 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:04:53,152 INFO L519 BasicCegarLoop]: trace histogram [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] [2021-05-01 08:04:53,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-01 08:04:53,153 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:04:53,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:04:53,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1752124277, now seen corresponding path program 1 times [2021-05-01 08:04:53,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:04:53,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766157084] [2021-05-01 08:04:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:04:53,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:53,173 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_correct_version_~i~0_29 v_correct_version_~w_13) InVars {correct_version_~i~0=v_correct_version_~i~0_29, correct_version_~w=v_correct_version_~w_13} OutVars{correct_version_~i~0=v_correct_version_~i~0_29, correct_version_~w=v_correct_version_~w_13} AuxVars[] AssignedVars[] [2021-05-01 08:04:53,175 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:04:53,183 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,194 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,204 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,206 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,218 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,228 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:53,229 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:53,240 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,251 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,254 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-05-01 08:04:53,265 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,277 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,278 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:04:53,373 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.8 percent of original size [2021-05-01 08:04:53,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 08:04:53,375 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:04:53,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:53,379 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (+ v_correct_version_~i~0_31 2) v_correct_version_~w_14) InVars {correct_version_~i~0=v_correct_version_~i~0_31, correct_version_~w=v_correct_version_~w_14} OutVars{correct_version_~i~0=v_correct_version_~i~0_31, correct_version_~w=v_correct_version_~w_14} AuxVars[] AssignedVars[] [2021-05-01 08:04:53,382 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size [2021-05-01 08:04:53,393 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,400 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,411 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,412 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,424 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:53,435 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,436 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:04:53,449 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,460 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,472 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,475 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-05-01 08:04:53,486 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,488 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size 56 [2021-05-01 08:04:53,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-05-01 08:04:53,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 08:04:53,585 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:04:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:53,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:53,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:53,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:53,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:53,762 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-05-01 08:04:53,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 08:04:53,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 08:04:53,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 08:04:53,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:53,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:54,097 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 08:04:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:04:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:54,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:54,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:54,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:04:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:54,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:54,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:54,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:54,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:54,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:04:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:54,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:54,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:54,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:54,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:04:54,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:54,579 INFO L849 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-05-01 08:04:54,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:54,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:54,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-05-01 08:04:54,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:54,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:54,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:04:54,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:54,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 08:04:54,905 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-05-01 08:04:54,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:04:54,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:54,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 08:04:54,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:54,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:54,911 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:04:54,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766157084] [2021-05-01 08:04:54,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [766157084] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:04:54,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:04:54,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-01 08:04:54,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735336242] [2021-05-01 08:04:54,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 08:04:54,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:04:54,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 08:04:54,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-05-01 08:04:54,912 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 15 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:55,203 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 08:04:55,507 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 08:04:55,719 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-01 08:04:56,014 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 08:04:56,445 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-01 08:04:56,828 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-01 08:04:57,181 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-01 08:04:57,554 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-01 08:04:57,844 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-01 08:04:58,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:04:58,319 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2021-05-01 08:04:58,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-01 08:04:58,320 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-05-01 08:04:58,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:04:58,321 INFO L225 Difference]: With dead ends: 68 [2021-05-01 08:04:58,321 INFO L226 Difference]: Without dead ends: 58 [2021-05-01 08:04:58,322 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 3169.1ms TimeCoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2021-05-01 08:04:58,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-01 08:04:58,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2021-05-01 08:04:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 38 states have internal predecessors, (40), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-01 08:04:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2021-05-01 08:04:58,333 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 37 [2021-05-01 08:04:58,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:04:58,333 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2021-05-01 08:04:58,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:04:58,333 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2021-05-01 08:04:58,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-01 08:04:58,334 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:04:58,334 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-05-01 08:04:58,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-01 08:04:58,335 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:04:58,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:04:58,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1449963591, now seen corresponding path program 3 times [2021-05-01 08:04:58,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:04:58,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013727671] [2021-05-01 08:04:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:04:58,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:58,348 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_correct_version_~i~0_36 v_correct_version_~w_15) InVars {correct_version_~i~0=v_correct_version_~i~0_36, correct_version_~w=v_correct_version_~w_15} OutVars{correct_version_~i~0=v_correct_version_~i~0_36, correct_version_~w=v_correct_version_~w_15} AuxVars[] AssignedVars[] [2021-05-01 08:04:58,372 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:04:58,374 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,384 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,393 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:58,393 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:58,396 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:58,407 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,418 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,424 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,431 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,437 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,441 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,445 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,446 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:04:58,483 INFO L142 QuantifierPusher]: treesize reduction 7, result has 88.1 percent of original size [2021-05-01 08:04:58,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 08:04:58,484 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:04:58,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:04:58,485 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (+ v_correct_version_~i~0_38 2) v_correct_version_~w_16) InVars {correct_version_~i~0=v_correct_version_~i~0_38, correct_version_~w=v_correct_version_~w_16} OutVars{correct_version_~i~0=v_correct_version_~i~0_38, correct_version_~w=v_correct_version_~w_16} AuxVars[] AssignedVars[] [2021-05-01 08:04:58,487 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size [2021-05-01 08:04:58,496 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,504 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,510 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,511 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,520 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:04:58,529 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,530 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:04:58,533 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-05-01 08:04:58,541 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,548 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,555 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,561 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,562 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size 56 [2021-05-01 08:04:58,599 INFO L142 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-05-01 08:04:58,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 08:04:58,599 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:04:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:58,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:58,626 INFO L142 QuantifierPusher]: treesize reduction 12, result has 88.8 percent of original size [2021-05-01 08:04:58,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 08:04:58,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:58,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:04:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:58,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:04:58,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:04:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:58,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:58,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:04:58,861 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-05-01 08:04:58,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 08:04:58,937 INFO L142 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size [2021-05-01 08:04:58,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 08:04:58,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:58,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 08:04:59,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:04:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:04:59,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:04:59,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:04:59,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:04:59,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:04:59,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:04:59,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:04:59,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:04:59,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:59,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:04:59,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 08:04:59,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:59,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:04:59,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 08:04:59,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:04:59,739 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-05-01 08:04:59,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:04:59,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 08:04:59,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:04:59,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:04:59,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:59,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:59,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 08:04:59,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:04:59,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:04:59,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:04:59,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 08:05:00,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:00,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:05:00,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:00,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:05:00,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 08:05:00,196 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:05:00,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013727671] [2021-05-01 08:05:00,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2013727671] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:05:00,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:05:00,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 08:05:00,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082888344] [2021-05-01 08:05:00,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-01 08:05:00,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:05:00,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-01 08:05:00,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2021-05-01 08:05:00,199 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:05:02,807 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 08:05:03,056 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-01 08:05:03,669 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:05:03,896 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:05:04,126 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:05:04,667 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-05-01 08:05:04,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:05:04,937 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2021-05-01 08:05:04,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 08:05:04,938 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-05-01 08:05:04,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:05:04,939 INFO L225 Difference]: With dead ends: 92 [2021-05-01 08:05:04,939 INFO L226 Difference]: Without dead ends: 65 [2021-05-01 08:05:04,940 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 3118.0ms TimeCoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2021-05-01 08:05:04,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-01 08:05:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2021-05-01 08:05:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 41 states have internal predecessors, (44), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-01 08:05:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-05-01 08:05:04,952 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 39 [2021-05-01 08:05:04,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:05:04,952 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-05-01 08:05:04,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:05:04,953 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-05-01 08:05:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-01 08:05:04,953 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:05:04,954 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-05-01 08:05:04,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-01 08:05:04,954 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:05:04,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:05:04,954 INFO L82 PathProgramCache]: Analyzing trace with hash 2030931829, now seen corresponding path program 2 times [2021-05-01 08:05:04,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:05:04,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775642236] [2021-05-01 08:05:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:05:04,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:04,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:05:04,977 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_correct_version_~i~0_43 v_correct_version_~w_17) InVars {correct_version_~i~0=v_correct_version_~i~0_43, correct_version_~w=v_correct_version_~w_17} OutVars{correct_version_~i~0=v_correct_version_~i~0_43, correct_version_~w=v_correct_version_~w_17} AuxVars[] AssignedVars[] [2021-05-01 08:05:04,979 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:05:04,981 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:04,991 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,002 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:05:05,003 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:05:05,007 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:05:05,024 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,030 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,038 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,045 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,051 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,056 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,060 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,061 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:05:05,106 INFO L142 QuantifierPusher]: treesize reduction 7, result has 88.1 percent of original size [2021-05-01 08:05:05,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 08:05:05,107 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:05:05,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:05:05,117 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (+ v_correct_version_~i~0_45 2) v_correct_version_~w_18) InVars {correct_version_~i~0=v_correct_version_~i~0_45, correct_version_~w=v_correct_version_~w_18} OutVars{correct_version_~i~0=v_correct_version_~i~0_45, correct_version_~w=v_correct_version_~w_18} AuxVars[] AssignedVars[] [2021-05-01 08:05:05,119 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size [2021-05-01 08:05:05,120 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,130 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,138 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:05:05,138 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:05:05,140 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 08:05:05,152 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,159 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,165 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,171 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,177 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,181 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,187 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,187 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size 56 [2021-05-01 08:05:05,246 INFO L142 QuantifierPusher]: treesize reduction 9, result has 85.5 percent of original size [2021-05-01 08:05:05,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 08:05:05,246 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:05:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:05:05,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:05:05,275 INFO L142 QuantifierPusher]: treesize reduction 12, result has 88.9 percent of original size [2021-05-01 08:05:05,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 08:05:05,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:05:05,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:05:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:05:05,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:05:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:05:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:05:05,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:05:05,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:05:05,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 08:05:05,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 08:05:05,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 08:05:05,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:05:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:05:05,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:05:05,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:05:05,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:05:05,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:05:05,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:05,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 08:05:05,962 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-05-01 08:05:05,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 08:05:06,050 INFO L142 QuantifierPusher]: treesize reduction 7, result has 81.1 percent of original size [2021-05-01 08:05:06,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 08:05:06,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:06,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:05:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:05:06,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:06,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:05:06,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:06,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 08:05:06,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:05:06,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:06,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:05:06,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:06,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 08:05:06,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 08:05:06,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:06,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:05:06,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:06,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:05:06,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 08:05:10,674 INFO L142 QuantifierPusher]: treesize reduction 5, result has 93.5 percent of original size [2021-05-01 08:05:10,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:05:10,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:10,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:05:10,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 08:05:14,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:14,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:05:14,893 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size [2021-05-01 08:05:14,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:05:14,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 08:05:26,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:26,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:05:26,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:26,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 08:05:26,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:26,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:05:26,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:26,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:05:26,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 08:05:26,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:26,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:05:26,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:26,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:05:26,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 08:05:26,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:26,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:05:26,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:05:26,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:05:26,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 08:05:27,253 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 17 [2021-05-01 08:05:27,254 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:05:27,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775642236] [2021-05-01 08:05:27,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [775642236] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:05:27,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:05:27,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-01 08:05:27,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812182717] [2021-05-01 08:05:27,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 08:05:27,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:05:27,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 08:05:27,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=558, Unknown=9, NotChecked=0, Total=650 [2021-05-01 08:05:27,256 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 24 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:05:27,705 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 08:05:34,132 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-05-01 08:05:51,728 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 08:06:00,928 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-05-01 08:06:18,467 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-05-01 08:06:28,068 WARN L205 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2021-05-01 08:06:51,226 WARN L205 SmtUtils]: Spent 9.50 s on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2021-05-01 08:06:58,956 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-05-01 08:06:59,491 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 08:06:59,893 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:07:00,378 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-01 08:07:00,950 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-01 08:07:01,741 WARN L205 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-05-01 08:07:02,224 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-05-01 08:07:02,932 WARN L205 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-05-01 08:07:03,878 WARN L205 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-05-01 08:07:04,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:07:04,372 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2021-05-01 08:07:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-01 08:07:04,376 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2021-05-01 08:07:04,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:07:04,378 INFO L225 Difference]: With dead ends: 63 [2021-05-01 08:07:04,378 INFO L226 Difference]: Without dead ends: 51 [2021-05-01 08:07:04,382 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 78126.5ms TimeCoverageRelationStatistics Valid=217, Invalid=1477, Unknown=28, NotChecked=0, Total=1722 [2021-05-01 08:07:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-01 08:07:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-05-01 08:07:04,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.105263157894737) internal successors, (42), 40 states have internal predecessors, (42), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-01 08:07:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-05-01 08:07:04,403 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 39 [2021-05-01 08:07:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:07:04,404 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-05-01 08:07:04,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:07:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-05-01 08:07:04,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-01 08:07:04,407 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:07:04,408 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:07:04,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-01 08:07:04,408 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:07:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:07:04,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1355746345, now seen corresponding path program 4 times [2021-05-01 08:07:04,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:07:04,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237364897] [2021-05-01 08:07:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:07:04,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:07:04,442 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_correct_version_~i~0_50 v_correct_version_~w_19) InVars {correct_version_~i~0=v_correct_version_~i~0_50, correct_version_~w=v_correct_version_~w_19} OutVars{correct_version_~i~0=v_correct_version_~i~0_50, correct_version_~w=v_correct_version_~w_19} AuxVars[] AssignedVars[] [2021-05-01 08:07:04,446 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:07:04,449 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,473 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:07:04,494 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,495 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:07:04,504 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-05-01 08:07:04,524 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,548 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,567 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,601 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,617 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,633 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,646 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,648 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:07:04,830 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-01 08:07:04,833 INFO L142 QuantifierPusher]: treesize reduction 7, result has 86.8 percent of original size [2021-05-01 08:07:04,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 08:07:04,835 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:07:04,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:07:04,846 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (+ v_correct_version_~i~0_52 2) v_correct_version_~w_20) InVars {correct_version_~i~0=v_correct_version_~i~0_52, correct_version_~w=v_correct_version_~w_20} OutVars{correct_version_~i~0=v_correct_version_~i~0_52, correct_version_~w=v_correct_version_~w_20} AuxVars[] AssignedVars[] [2021-05-01 08:07:04,850 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size [2021-05-01 08:07:04,855 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,876 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,896 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:07:04,898 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:07:04,906 INFO L108 tifierPushTermWalker]: treesize reduction 8, result has 11.1 percent of original size [2021-05-01 08:07:04,928 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,945 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,962 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:04,998 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:05,028 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:05,047 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:05,061 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:05,063 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size 56 [2021-05-01 08:07:05,234 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 08:07:05,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 84.5 percent of original size [2021-05-01 08:07:05,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 08:07:05,239 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:07:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:07:05,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:05,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:07:05,275 INFO L142 QuantifierPusher]: treesize reduction 40, result has 65.5 percent of original size [2021-05-01 08:07:05,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 08:07:05,458 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2021-05-01 08:07:05,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:05,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:07:05,682 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 08:07:05,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:07:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:07:05,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:05,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:07:05,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:07:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:07:05,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:05,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:07:05,793 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-05-01 08:07:05,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 08:07:05,992 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-05-01 08:07:05,995 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 08:07:05,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 08:07:06,219 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2021-05-01 08:07:06,224 INFO L142 QuantifierPusher]: treesize reduction 7, result has 77.4 percent of original size [2021-05-01 08:07:06,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 08:07:06,602 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2021-05-01 08:07:06,605 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-05-01 08:07:06,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:07:06,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:07:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:07:06,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:06,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:07:06,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:06,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:07:07,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:07,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:07:07,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:07,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:07:07,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:07,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:07:07,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:07,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:07:07,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:07,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:07:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:07:08,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:08,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:07:08,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:08,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 08:07:08,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-05-01 08:07:08,210 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-01 08:07:10,577 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 36 [2021-05-01 08:07:10,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:10,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:07:10,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:10,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-05-01 08:07:10,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-05-01 08:07:13,047 WARN L205 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 08:07:13,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:13,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:07:13,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:13,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 08:07:13,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-05-01 08:07:17,564 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-01 08:07:17,571 INFO L142 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-05-01 08:07:17,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:07:17,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:17,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 08:07:17,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 08:07:22,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:22,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:07:22,294 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.5 percent of original size [2021-05-01 08:07:22,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 08:07:22,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-05-01 08:07:32,808 INFO L142 QuantifierPusher]: treesize reduction 5, result has 94.6 percent of original size [2021-05-01 08:07:32,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:07:32,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:32,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 08:07:32,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-05-01 08:07:43,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:07:43,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:07:43,292 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.5 percent of original size [2021-05-01 08:07:43,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-05-01 08:07:43,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-05-01 08:08:00,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:08:00,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:08:00,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:08:00,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:08:00,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:08:00,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:08:00,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:08:00,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:08:00,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 08:08:00,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:08:00,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:08:00,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:08:00,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:08:00,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 08:08:01,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:08:01,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:08:01,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:08:01,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:08:01,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 08:08:01,501 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 10 [2021-05-01 08:08:01,503 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:08:01,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237364897] [2021-05-01 08:08:01,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1237364897] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:08:01,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:08:01,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 08:08:01,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333996510] [2021-05-01 08:08:01,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 08:08:01,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:08:01,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 08:08:01,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=593, Unknown=22, NotChecked=0, Total=702 [2021-05-01 08:08:01,506 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 25 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:08:02,105 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 08:08:13,053 WARN L205 SmtUtils]: Spent 2.56 s on a formula simplification that was a NOOP. DAG size: 73 [2021-05-01 08:08:32,017 WARN L205 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 75 [2021-05-01 08:08:44,762 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 08:09:03,758 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-01 08:09:24,869 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-05-01 08:09:42,504 WARN L205 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-01 08:10:10,397 WARN L205 SmtUtils]: Spent 2.65 s on a formula simplification that was a NOOP. DAG size: 81 [2021-05-01 08:10:43,236 WARN L205 SmtUtils]: Spent 4.71 s on a formula simplification that was a NOOP. DAG size: 87 [2021-05-01 08:10:46,046 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 08:11:14,779 WARN L205 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-05-01 08:11:15,416 WARN L205 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-01 08:11:16,347 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 08:11:16,943 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:11:17,671 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:11:18,423 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:11:19,229 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:11:19,846 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 08:11:21,094 WARN L205 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-05-01 08:11:22,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:11:22,331 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-05-01 08:11:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-01 08:11:22,352 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2021-05-01 08:11:22,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:11:22,353 INFO L225 Difference]: With dead ends: 80 [2021-05-01 08:11:22,353 INFO L226 Difference]: Without dead ends: 71 [2021-05-01 08:11:22,354 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 162758.2ms TimeCoverageRelationStatistics Valid=226, Invalid=1780, Unknown=64, NotChecked=0, Total=2070 [2021-05-01 08:11:22,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-01 08:11:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2021-05-01 08:11:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 43 states have internal predecessors, (46), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-01 08:11:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-05-01 08:11:22,371 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 41 [2021-05-01 08:11:22,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:11:22,372 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-05-01 08:11:22,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:11:22,372 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-05-01 08:11:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-01 08:11:22,372 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:11:22,373 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:11:22,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-01 08:11:22,373 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:11:22,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:11:22,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2125149075, now seen corresponding path program 3 times [2021-05-01 08:11:22,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:11:22,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673096080] [2021-05-01 08:11:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:11:22,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:22,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:11:22,417 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_correct_version_~i~0_58 v_correct_version_~w_21) InVars {correct_version_~i~0=v_correct_version_~i~0_58, correct_version_~w=v_correct_version_~w_21} OutVars{correct_version_~i~0=v_correct_version_~i~0_58, correct_version_~w=v_correct_version_~w_21} AuxVars[] AssignedVars[] [2021-05-01 08:11:22,423 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:11:22,428 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:22,473 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:11:22,504 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:22,509 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:11:22,535 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:11:22,569 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:22,600 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:22,665 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:22,696 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:22,753 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:22,777 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:22,806 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:22,811 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:11:23,172 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-01 08:11:23,182 INFO L142 QuantifierPusher]: treesize reduction 7, result has 88.1 percent of original size [2021-05-01 08:11:23,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 08:11:23,187 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:11:23,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:23,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:11:23,201 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (+ v_correct_version_~i~0_60 2) v_correct_version_~w_22) InVars {correct_version_~i~0=v_correct_version_~i~0_60, correct_version_~w=v_correct_version_~w_22} OutVars{correct_version_~i~0=v_correct_version_~i~0_60, correct_version_~w=v_correct_version_~w_22} AuxVars[] AssignedVars[] [2021-05-01 08:11:23,206 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size [2021-05-01 08:11:23,211 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:23,240 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:23,279 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:11:23,284 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:11:23,303 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 08:11:23,336 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:23,398 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:23,429 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:23,467 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:23,503 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:23,533 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:23,588 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:23,593 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size 56 [2021-05-01 08:11:23,925 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 08:11:23,934 INFO L142 QuantifierPusher]: treesize reduction 9, result has 85.5 percent of original size [2021-05-01 08:11:23,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 08:11:23,940 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:11:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:11:24,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:24,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:11:24,014 INFO L142 QuantifierPusher]: treesize reduction 12, result has 88.7 percent of original size [2021-05-01 08:11:24,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 08:11:24,398 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2021-05-01 08:11:24,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:24,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:11:24,767 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 08:11:24,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:11:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:11:24,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:24,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:11:24,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:11:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:11:24,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:24,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:11:24,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:24,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:11:25,148 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 08:11:25,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:25,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 08:11:25,591 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2021-05-01 08:11:25,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:25,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 08:11:25,892 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-05-01 08:11:25,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:25,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 08:11:26,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:11:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:11:26,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:26,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:11:26,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:26,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:11:26,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:26,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:11:26,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:26,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:11:27,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:27,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 08:11:27,617 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-05-01 08:11:27,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 08:11:28,150 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-05-01 08:11:28,160 INFO L142 QuantifierPusher]: treesize reduction 7, result has 81.1 percent of original size [2021-05-01 08:11:28,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 08:11:28,787 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-05-01 08:11:28,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:28,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:11:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:11:29,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:29,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:11:29,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:29,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:11:29,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-05-01 08:11:29,265 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 08:11:29,817 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 08:11:29,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:29,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:11:29,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:29,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:11:29,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 08:11:30,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:30,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:11:30,489 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-01 08:11:30,500 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-05-01 08:11:30,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:11:30,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:30,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 08:11:31,006 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-05-01 08:11:31,015 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-05-01 08:11:31,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 08:11:31,474 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-05-01 08:11:31,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:31,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:11:34,245 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-05-01 08:11:34,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:34,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:11:34,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:34,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 08:11:34,688 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-05-01 08:11:34,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:34,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:11:34,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:34,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:11:34,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 08:11:35,165 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-01 08:11:35,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:35,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:11:35,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:35,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:11:35,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 08:11:35,714 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 08:11:35,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:35,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:11:35,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:35,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:11:35,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 08:11:36,358 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 17 [2021-05-01 08:11:36,362 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:11:36,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673096080] [2021-05-01 08:11:36,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1673096080] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:11:36,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:11:36,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 08:11:36,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441116106] [2021-05-01 08:11:36,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 08:11:36,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:11:36,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 08:11:36,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=567, Unknown=1, NotChecked=0, Total=650 [2021-05-01 08:11:36,364 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 25 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:11:37,165 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 08:11:37,740 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-01 08:11:40,597 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 08:11:41,402 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 08:11:42,025 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 08:11:44,956 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-05-01 08:11:46,187 WARN L205 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2021-05-01 08:11:47,725 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2021-05-01 08:11:49,104 WARN L205 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-05-01 08:11:49,911 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 08:11:50,470 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:11:51,159 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-05-01 08:11:51,875 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-01 08:11:52,868 WARN L205 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-05-01 08:11:53,550 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-05-01 08:11:54,618 WARN L205 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-05-01 08:11:55,853 WARN L205 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-05-01 08:11:56,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:11:56,546 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-05-01 08:11:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-01 08:11:56,561 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2021-05-01 08:11:56,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:11:56,562 INFO L225 Difference]: With dead ends: 71 [2021-05-01 08:11:56,562 INFO L226 Difference]: Without dead ends: 60 [2021-05-01 08:11:56,563 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 25389.5ms TimeCoverageRelationStatistics Valid=222, Invalid=1582, Unknown=2, NotChecked=0, Total=1806 [2021-05-01 08:11:56,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-01 08:11:56,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-05-01 08:11:56,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 46 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-01 08:11:56,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-01 08:11:56,579 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 41 [2021-05-01 08:11:56,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:11:56,579 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-01 08:11:56,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:11:56,579 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-01 08:11:56,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-01 08:11:56,580 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:11:56,580 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:11:56,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-01 08:11:56,580 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:11:56,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:11:56,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1049593177, now seen corresponding path program 5 times [2021-05-01 08:11:56,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:11:56,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507196458] [2021-05-01 08:11:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:11:56,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:56,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:11:56,614 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_correct_version_~i~0_66 v_correct_version_~w_23) InVars {correct_version_~i~0=v_correct_version_~i~0_66, correct_version_~w=v_correct_version_~w_23} OutVars{correct_version_~i~0=v_correct_version_~i~0_66, correct_version_~w=v_correct_version_~w_23} AuxVars[] AssignedVars[] [2021-05-01 08:11:56,620 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:11:56,624 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:56,653 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:11:56,675 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:56,679 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:11:56,693 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:11:56,717 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:56,745 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:56,793 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:56,816 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:56,833 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:56,874 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:56,894 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:56,898 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:11:57,161 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-01 08:11:57,168 INFO L142 QuantifierPusher]: treesize reduction 7, result has 88.1 percent of original size [2021-05-01 08:11:57,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 08:11:57,172 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:11:57,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:11:57,180 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (+ v_correct_version_~i~0_68 2) v_correct_version_~w_24) InVars {correct_version_~i~0=v_correct_version_~i~0_68, correct_version_~w=v_correct_version_~w_24} OutVars{correct_version_~i~0=v_correct_version_~i~0_68, correct_version_~w=v_correct_version_~w_24} AuxVars[] AssignedVars[] [2021-05-01 08:11:57,191 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size [2021-05-01 08:11:57,201 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,225 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,262 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:11:57,266 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:11:57,281 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 08:11:57,308 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,336 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,367 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,405 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,426 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,442 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,479 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,483 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size 56 [2021-05-01 08:11:57,726 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 08:11:57,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 85.5 percent of original size [2021-05-01 08:11:57,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 08:11:57,736 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:11:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:11:57,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:11:57,765 INFO L142 QuantifierPusher]: treesize reduction 40, result has 65.5 percent of original size [2021-05-01 08:11:57,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-05-01 08:11:57,984 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2021-05-01 08:11:57,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:57,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:11:58,243 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 08:11:58,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:11:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:11:58,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:58,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:11:58,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:11:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:11:58,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:58,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:11:58,356 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-05-01 08:11:58,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 08:11:58,596 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-05-01 08:11:58,608 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-05-01 08:11:58,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 08:11:58,905 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2021-05-01 08:11:58,919 INFO L142 QuantifierPusher]: treesize reduction 7, result has 77.4 percent of original size [2021-05-01 08:11:58,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 08:11:59,393 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2021-05-01 08:11:59,399 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-05-01 08:11:59,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:11:59,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:11:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:11:59,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:59,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:11:59,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:59,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:11:59,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:11:59,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:12:00,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:00,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:12:00,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:00,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:12:00,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:00,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:12:00,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:00,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:12:01,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:01,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:12:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:12:01,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:01,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:12:01,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:01,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 08:12:01,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 08:12:03,582 WARN L205 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 08:12:08,031 WARN L205 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 08:12:08,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:08,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:12:08,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:08,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 08:12:08,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-05-01 08:12:10,582 WARN L205 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 38 [2021-05-01 08:12:10,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:12:10,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:10,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 08:12:10,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 08:12:15,157 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 08:12:15,165 INFO L142 QuantifierPusher]: treesize reduction 5, result has 94.9 percent of original size [2021-05-01 08:12:15,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:12:15,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:15,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 08:12:15,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 08:12:19,677 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-01 08:12:19,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:19,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:12:19,690 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size [2021-05-01 08:12:19,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 08:12:19,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 08:12:30,284 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-01 08:12:30,293 INFO L142 QuantifierPusher]: treesize reduction 5, result has 94.9 percent of original size [2021-05-01 08:12:30,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:12:30,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:30,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 08:12:30,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-05-01 08:12:40,968 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 08:12:40,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:40,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:12:40,980 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size [2021-05-01 08:12:40,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-05-01 08:12:40,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 08:12:59,657 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-05-01 08:12:59,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:59,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 08:12:59,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:12:59,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:13:00,148 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-05-01 08:13:00,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:13:00,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:13:00,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:13:00,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:13:00,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 08:13:00,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:13:00,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:13:00,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:13:00,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:13:00,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 08:13:01,223 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-05-01 08:13:01,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:13:01,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:13:01,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:13:01,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:13:01,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 08:13:01,834 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 10 [2021-05-01 08:13:01,838 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:13:01,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507196458] [2021-05-01 08:13:01,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1507196458] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:13:01,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:13:01,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-01 08:13:01,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779551623] [2021-05-01 08:13:01,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 08:13:01,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:13:01,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 08:13:01,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=643, Unknown=24, NotChecked=0, Total=756 [2021-05-01 08:13:01,840 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 26 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:13:03,005 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 08:13:20,257 WARN L205 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 74 [2021-05-01 08:13:41,717 WARN L205 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-01 08:13:58,773 WARN L205 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-05-01 08:14:20,238 WARN L205 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 08:14:43,781 WARN L205 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-05-01 08:15:13,282 WARN L205 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 08:15:34,139 WARN L205 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2021-05-01 08:15:56,924 WARN L205 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-05-01 08:16:15,323 WARN L205 SmtUtils]: Spent 997.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-05-01 08:16:27,521 WARN L205 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 08:16:28,694 WARN L205 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-05-01 08:16:47,571 WARN L205 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 08:16:48,878 WARN L205 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:16:50,474 WARN L205 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:16:52,086 WARN L205 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:16:53,718 WARN L205 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:16:55,977 WARN L205 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-05-01 08:16:57,494 WARN L205 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-05-01 08:17:00,578 WARN L205 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-05-01 08:17:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:17:05,303 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2021-05-01 08:17:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-01 08:17:05,342 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2021-05-01 08:17:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:17:05,344 INFO L225 Difference]: With dead ends: 92 [2021-05-01 08:17:05,344 INFO L226 Difference]: Without dead ends: 83 [2021-05-01 08:17:05,345 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 177183.3ms TimeCoverageRelationStatistics Valid=231, Invalid=1956, Unknown=69, NotChecked=0, Total=2256 [2021-05-01 08:17:05,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-01 08:17:05,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 58. [2021-05-01 08:17:05,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-01 08:17:05,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2021-05-01 08:17:05,364 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 43 [2021-05-01 08:17:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:17:05,364 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2021-05-01 08:17:05,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:17:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2021-05-01 08:17:05,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-01 08:17:05,365 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:17:05,365 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:17:05,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-01 08:17:05,365 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:17:05,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:17:05,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1821358031, now seen corresponding path program 4 times [2021-05-01 08:17:05,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:17:05,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928088527] [2021-05-01 08:17:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:17:05,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:05,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:17:05,433 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_correct_version_~i~0_74 v_correct_version_~w_25) InVars {correct_version_~i~0=v_correct_version_~i~0_74, correct_version_~w=v_correct_version_~w_25} OutVars{correct_version_~i~0=v_correct_version_~i~0_74, correct_version_~w=v_correct_version_~w_25} AuxVars[] AssignedVars[] [2021-05-01 08:17:05,444 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size [2021-05-01 08:17:05,454 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:05,506 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:05,579 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:17:05,587 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:17:05,618 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:17:05,664 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:05,729 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:05,843 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-05-01 08:17:05,850 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:05,896 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:05,989 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:06,030 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:06,066 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:06,074 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.7 percent of original size 50 [2021-05-01 08:17:06,582 WARN L205 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-01 08:17:06,596 INFO L142 QuantifierPusher]: treesize reduction 7, result has 88.1 percent of original size [2021-05-01 08:17:06,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 08:17:06,610 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:17:06,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:06,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 08:17:06,628 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (+ v_correct_version_~i~0_76 2) v_correct_version_~w_26) InVars {correct_version_~i~0=v_correct_version_~i~0_76, correct_version_~w=v_correct_version_~w_26} OutVars{correct_version_~i~0=v_correct_version_~i~0_76, correct_version_~w=v_correct_version_~w_26} AuxVars[] AssignedVars[] [2021-05-01 08:17:06,645 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size [2021-05-01 08:17:06,688 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:06,729 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:06,768 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:06,775 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:06,837 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 08:17:06,881 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:06,890 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:17:06,923 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-05-01 08:17:06,978 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:07,058 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:07,134 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:07,176 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:07,184 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 88.9 percent of original size 56 [2021-05-01 08:17:07,723 WARN L205 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 08:17:07,738 INFO L142 QuantifierPusher]: treesize reduction 9, result has 85.5 percent of original size [2021-05-01 08:17:07,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-05-01 08:17:07,745 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 08:17:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:17:07,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:07,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:17:07,803 INFO L142 QuantifierPusher]: treesize reduction 12, result has 88.9 percent of original size [2021-05-01 08:17:07,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-05-01 08:17:08,422 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 21 [2021-05-01 08:17:08,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:08,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:17:09,032 WARN L205 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2021-05-01 08:17:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:17:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:17:09,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:09,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:17:09,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-01 08:17:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:17:09,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:09,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:17:09,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:09,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:17:09,623 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2021-05-01 08:17:09,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:09,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:17:10,106 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-05-01 08:17:10,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:10,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 08:17:10,561 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-05-01 08:17:10,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:10,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 08:17:10,850 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2021-05-01 08:17:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:17:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:17:10,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:10,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:17:11,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:11,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 08:17:11,526 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2021-05-01 08:17:11,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:11,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:17:11,999 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-05-01 08:17:12,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:12,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 08:17:12,540 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-05-01 08:17:12,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:12,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 08:17:13,137 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-05-01 08:17:13,157 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-05-01 08:17:13,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 08:17:14,013 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-05-01 08:17:14,031 INFO L142 QuantifierPusher]: treesize reduction 7, result has 81.1 percent of original size [2021-05-01 08:17:14,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 08:17:14,911 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-05-01 08:17:14,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:14,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:17:15,422 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-05-01 08:17:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 08:17:15,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:15,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:17:15,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:15,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 08:17:15,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:17:15,623 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-01 08:17:16,398 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-05-01 08:17:16,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:16,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:17:16,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:16,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-05-01 08:17:16,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-01 08:17:17,428 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-05-01 08:17:17,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:17,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:17:17,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:17,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:17:17,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 08:17:22,644 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 08:17:22,662 INFO L142 QuantifierPusher]: treesize reduction 5, result has 93.5 percent of original size [2021-05-01 08:17:22,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:17:22,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:22,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:17:22,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 08:17:28,147 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-05-01 08:17:28,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:28,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:17:28,185 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size [2021-05-01 08:17:28,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:17:28,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 08:17:40,483 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-01 08:17:40,506 INFO L142 QuantifierPusher]: treesize reduction 5, result has 93.5 percent of original size [2021-05-01 08:17:40,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:17:40,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:40,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:17:40,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 08:17:52,283 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 08:17:52,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:17:52,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:17:52,315 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size [2021-05-01 08:17:52,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:17:52,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 08:18:10,612 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-01 08:18:10,633 INFO L142 QuantifierPusher]: treesize reduction 5, result has 93.5 percent of original size [2021-05-01 08:18:10,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:18:10,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:18:10,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:18:10,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-01 08:18:31,401 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 08:18:31,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:18:31,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:18:31,435 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size [2021-05-01 08:18:31,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 08:18:31,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-05-01 08:19:01,635 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-01 08:19:01,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:19:01,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 08:19:01,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:19:01,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 08:19:03,017 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-05-01 08:19:03,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:19:03,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:19:03,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:19:03,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:19:03,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 08:19:04,339 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-01 08:19:04,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:19:04,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:19:04,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:19:04,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:19:04,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 08:19:05,885 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 08:19:05,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:19:05,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 08:19:05,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:19:05,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 08:19:05,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39