/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt9.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:30:52,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:30:52,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:30:52,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:30:52,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:30:52,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:30:52,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:30:52,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:30:52,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:30:52,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:30:52,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:30:52,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:30:52,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:30:52,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:30:52,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:30:52,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:30:52,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:30:52,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:30:52,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:30:52,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:30:52,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:30:52,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:30:52,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:30:52,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:30:52,553 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:30:52,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:30:52,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:30:52,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:30:52,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:30:52,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:30:52,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:30:52,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:30:52,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:30:52,555 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:30:52,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:30:52,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:30:52,556 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:30:52,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:30:52,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:30:52,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:30:52,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:30:52,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:30:52,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:30:52,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:30:52,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:30:52,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:30:52,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:30:52,997 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:30:52,998 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:30:52,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt9.c [2021-02-24 00:30:53,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c621e206e/9516499c17fe4b6481f30de1ed6cc2bd/FLAG0a7491e36 [2021-02-24 00:30:53,659 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:30:53,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt9.c [2021-02-24 00:30:53,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c621e206e/9516499c17fe4b6481f30de1ed6cc2bd/FLAG0a7491e36 [2021-02-24 00:30:53,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c621e206e/9516499c17fe4b6481f30de1ed6cc2bd [2021-02-24 00:30:53,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:30:54,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:30:54,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:30:54,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:30:54,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:30:54,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:30:53" (1/1) ... [2021-02-24 00:30:54,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5742a572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:54, skipping insertion in model container [2021-02-24 00:30:54,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:30:53" (1/1) ... [2021-02-24 00:30:54,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:30:54,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:30:54,203 WARN L226 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/sumt9.c[403,416] [2021-02-24 00:30:54,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:30:54,235 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:30:54,251 WARN L226 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/sumt9.c[403,416] [2021-02-24 00:30:54,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:30:54,278 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:30:54,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:54 WrapperNode [2021-02-24 00:30:54,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:30:54,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:30:54,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:30:54,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:30:54,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:54" (1/1) ... [2021-02-24 00:30:54,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:54" (1/1) ... [2021-02-24 00:30:54,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:54" (1/1) ... [2021-02-24 00:30:54,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:54" (1/1) ... [2021-02-24 00:30:54,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:54" (1/1) ... [2021-02-24 00:30:54,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:54" (1/1) ... [2021-02-24 00:30:54,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:54" (1/1) ... [2021-02-24 00:30:54,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:30:54,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:30:54,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:30:54,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:30:54,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:30:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:30:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:30:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:30:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:30:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:30:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:30:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:30:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:30:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:30:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:30:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:30:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:30:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:30:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:30:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:30:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:30:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:30:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:30:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:30:54,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:30:54,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:30:54,956 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:30:54,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:30:54 BoogieIcfgContainer [2021-02-24 00:30:54,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:30:54,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:30:54,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:30:54,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:30:54,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:30:53" (1/3) ... [2021-02-24 00:30:54,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df02ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:30:54, skipping insertion in model container [2021-02-24 00:30:54,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:54" (2/3) ... [2021-02-24 00:30:54,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df02ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:30:54, skipping insertion in model container [2021-02-24 00:30:54,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:30:54" (3/3) ... [2021-02-24 00:30:54,967 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt9.c [2021-02-24 00:30:54,974 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:30:54,979 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:30:54,998 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:30:55,022 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:30:55,022 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:30:55,023 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:30:55,023 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:30:55,023 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:30:55,023 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:30:55,023 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:30:55,023 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:30:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2021-02-24 00:30:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 00:30:55,050 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:55,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:55,051 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:55,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:55,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1856204290, now seen corresponding path program 1 times [2021-02-24 00:30:55,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:55,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948000307] [2021-02-24 00:30:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:55,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:55,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:55,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:55,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:30:55,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:55,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:30:55,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:30:55,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:30:55,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:30:55,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:30:55,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:30:55,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:55,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:30:56,111 WARN L141 QuantifierPusher]: treesize reduction 4, result has 98.1 percent of original size [2021-02-24 00:30:56,126 WARN L147 QuantifierPusher]: treesize reduction 4, result has 98.1 percent of original size 210 [2021-02-24 00:30:56,342 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2021-02-24 00:30:56,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:56,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:56,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:56,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:56,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:56,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:56,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948000307] [2021-02-24 00:30:56,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:30:56,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-24 00:30:56,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210310902] [2021-02-24 00:30:56,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 00:30:56,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:56,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 00:30:56,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:30:56,528 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 17 states. [2021-02-24 00:30:58,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:58,285 INFO L93 Difference]: Finished difference Result 194 states and 267 transitions. [2021-02-24 00:30:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:30:58,287 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 36 [2021-02-24 00:30:58,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:58,299 INFO L225 Difference]: With dead ends: 194 [2021-02-24 00:30:58,299 INFO L226 Difference]: Without dead ends: 141 [2021-02-24 00:30:58,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=268, Invalid=724, Unknown=0, NotChecked=0, Total=992 [2021-02-24 00:30:58,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-02-24 00:30:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 63. [2021-02-24 00:30:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-24 00:30:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-02-24 00:30:58,377 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 36 [2021-02-24 00:30:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:58,378 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-02-24 00:30:58,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 00:30:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-02-24 00:30:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 00:30:58,380 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:58,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:58,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:30:58,381 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:58,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1088228868, now seen corresponding path program 1 times [2021-02-24 00:30:58,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:58,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381854944] [2021-02-24 00:30:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:58,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:58,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:58,479 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:30:58,481 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 91 [2021-02-24 00:30:58,521 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:30:58,524 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:30:58,534 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:30:58,535 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:30:58,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:58,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:58,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:58,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:30:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:58,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:58,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:58,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381854944] [2021-02-24 00:30:58,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:58,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:58,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465643335] [2021-02-24 00:30:58,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:58,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:58,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:58,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:58,599 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 5 states. [2021-02-24 00:30:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:59,022 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2021-02-24 00:30:59,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:30:59,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2021-02-24 00:30:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:59,024 INFO L225 Difference]: With dead ends: 107 [2021-02-24 00:30:59,024 INFO L226 Difference]: Without dead ends: 81 [2021-02-24 00:30:59,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:59,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-24 00:30:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 65. [2021-02-24 00:30:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-24 00:30:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2021-02-24 00:30:59,054 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 45 [2021-02-24 00:30:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:59,055 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2021-02-24 00:30:59,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:30:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2021-02-24 00:30:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-24 00:30:59,057 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:59,057 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:59,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:30:59,057 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:59,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:59,058 INFO L82 PathProgramCache]: Analyzing trace with hash -751621844, now seen corresponding path program 1 times [2021-02-24 00:30:59,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:59,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678221524] [2021-02-24 00:30:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:59,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:59,114 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:30:59,115 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:30:59,132 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:59,133 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:59,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:59,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:30:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:59,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:59,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678221524] [2021-02-24 00:30:59,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:59,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:59,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985676905] [2021-02-24 00:30:59,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:59,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:59,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:59,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:59,182 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 5 states. [2021-02-24 00:30:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:59,491 INFO L93 Difference]: Finished difference Result 106 states and 129 transitions. [2021-02-24 00:30:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:30:59,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2021-02-24 00:30:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:59,493 INFO L225 Difference]: With dead ends: 106 [2021-02-24 00:30:59,493 INFO L226 Difference]: Without dead ends: 80 [2021-02-24 00:30:59,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:59,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-24 00:30:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2021-02-24 00:30:59,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-24 00:30:59,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2021-02-24 00:30:59,522 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 46 [2021-02-24 00:30:59,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:59,523 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2021-02-24 00:30:59,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:30:59,523 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2021-02-24 00:30:59,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 00:30:59,524 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:59,534 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:30:59,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:30:59,535 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:59,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1780644162, now seen corresponding path program 1 times [2021-02-24 00:30:59,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:59,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959933292] [2021-02-24 00:30:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:59,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:59,682 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:30:59,685 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 91 [2021-02-24 00:30:59,732 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:30:59,734 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:30:59,747 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:30:59,748 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:30:59,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:59,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:30:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:59,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:59,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:59,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959933292] [2021-02-24 00:30:59,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:59,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:59,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117838363] [2021-02-24 00:30:59,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:59,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:59,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:59,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:59,808 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 5 states. [2021-02-24 00:31:00,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:00,146 INFO L93 Difference]: Finished difference Result 105 states and 127 transitions. [2021-02-24 00:31:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:31:00,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2021-02-24 00:31:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:00,148 INFO L225 Difference]: With dead ends: 105 [2021-02-24 00:31:00,148 INFO L226 Difference]: Without dead ends: 79 [2021-02-24 00:31:00,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-24 00:31:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2021-02-24 00:31:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-24 00:31:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-02-24 00:31:00,180 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 47 [2021-02-24 00:31:00,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:00,181 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-02-24 00:31:00,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:31:00,181 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-02-24 00:31:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 00:31:00,182 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:00,183 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:00,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:31:00,183 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:00,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:00,184 INFO L82 PathProgramCache]: Analyzing trace with hash 851177254, now seen corresponding path program 1 times [2021-02-24 00:31:00,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:00,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594362252] [2021-02-24 00:31:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:00,258 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:00,259 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:00,278 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:00,279 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:00,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:00,313 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:00,316 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 109 [2021-02-24 00:31:00,383 WARN L141 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-02-24 00:31:00,386 WARN L147 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size 115 [2021-02-24 00:31:00,422 WARN L141 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size [2021-02-24 00:31:00,423 WARN L147 QuantifierPusher]: treesize reduction 8, result has 92.5 percent of original size 99 [2021-02-24 00:31:00,472 WARN L141 QuantifierPusher]: treesize reduction 89, result has 49.1 percent of original size [2021-02-24 00:31:00,473 WARN L147 QuantifierPusher]: treesize reduction 89, result has 49.1 percent of original size 86 [2021-02-24 00:31:00,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:00,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:00,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:00,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:00,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:00,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594362252] [2021-02-24 00:31:00,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:00,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:31:00,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893663097] [2021-02-24 00:31:00,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:31:00,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:00,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:31:00,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:31:00,582 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 9 states. [2021-02-24 00:31:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:01,300 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2021-02-24 00:31:01,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:31:01,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-02-24 00:31:01,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:01,302 INFO L225 Difference]: With dead ends: 104 [2021-02-24 00:31:01,302 INFO L226 Difference]: Without dead ends: 78 [2021-02-24 00:31:01,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:31:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-24 00:31:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2021-02-24 00:31:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-24 00:31:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-02-24 00:31:01,335 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 48 [2021-02-24 00:31:01,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:01,336 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-02-24 00:31:01,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:31:01,336 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-02-24 00:31:01,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-24 00:31:01,337 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:01,338 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:01,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:31:01,338 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:01,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:01,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1005037432, now seen corresponding path program 1 times [2021-02-24 00:31:01,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:01,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404805001] [2021-02-24 00:31:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:01,427 WARN L141 QuantifierPusher]: treesize reduction 1, result has 93.8 percent of original size [2021-02-24 00:31:01,428 WARN L147 QuantifierPusher]: treesize reduction 1, result has 93.8 percent of original size 15 [2021-02-24 00:31:01,441 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size [2021-02-24 00:31:01,443 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size 18 [2021-02-24 00:31:01,474 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:31:01,477 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:31:01,500 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:31:01,501 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:31:01,529 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-02-24 00:31:01,530 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size 27 [2021-02-24 00:31:01,562 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-02-24 00:31:01,563 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size 30 [2021-02-24 00:31:01,603 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-24 00:31:01,604 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 33 [2021-02-24 00:31:01,648 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-02-24 00:31:01,650 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size 36 [2021-02-24 00:31:01,712 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-24 00:31:01,713 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-24 00:31:01,791 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-02-24 00:31:01,793 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size 42 [2021-02-24 00:31:01,859 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-02-24 00:31:01,861 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size 45 [2021-02-24 00:31:01,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:01,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:31:01,992 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size [2021-02-24 00:31:01,994 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 108 [2021-02-24 00:31:02,108 WARN L141 QuantifierPusher]: treesize reduction 3, result has 98.7 percent of original size [2021-02-24 00:31:02,119 WARN L147 QuantifierPusher]: treesize reduction 3, result has 98.7 percent of original size 227 [2021-02-24 00:31:02,299 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-02-24 00:31:02,306 WARN L141 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size [2021-02-24 00:31:02,310 WARN L147 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size 276 [2021-02-24 00:31:02,363 WARN L141 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size [2021-02-24 00:31:02,368 WARN L147 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size 260 [2021-02-24 00:31:02,526 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-02-24 00:31:02,532 WARN L141 QuantifierPusher]: treesize reduction 3, result has 99.1 percent of original size [2021-02-24 00:31:02,535 WARN L147 QuantifierPusher]: treesize reduction 3, result has 99.1 percent of original size 324 [2021-02-24 00:31:02,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:31:02,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:02,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:02,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:02,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:02,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:02,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:02,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404805001] [2021-02-24 00:31:02,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:02,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-02-24 00:31:02,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110348845] [2021-02-24 00:31:02,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-24 00:31:02,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:02,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-24 00:31:02,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:31:02,661 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 19 states. [2021-02-24 00:31:03,342 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-02-24 00:31:03,485 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:31:03,874 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-02-24 00:31:04,038 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-02-24 00:31:04,259 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2021-02-24 00:31:04,462 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2021-02-24 00:31:05,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:05,132 INFO L93 Difference]: Finished difference Result 162 states and 209 transitions. [2021-02-24 00:31:05,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:31:05,133 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2021-02-24 00:31:05,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:05,135 INFO L225 Difference]: With dead ends: 162 [2021-02-24 00:31:05,135 INFO L226 Difference]: Without dead ends: 136 [2021-02-24 00:31:05,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=326, Invalid=730, Unknown=0, NotChecked=0, Total=1056 [2021-02-24 00:31:05,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-02-24 00:31:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 69. [2021-02-24 00:31:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-02-24 00:31:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2021-02-24 00:31:05,178 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 49 [2021-02-24 00:31:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:05,178 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2021-02-24 00:31:05,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-24 00:31:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2021-02-24 00:31:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-24 00:31:05,180 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:05,180 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:05,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:31:05,180 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:05,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:05,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1651510560, now seen corresponding path program 1 times [2021-02-24 00:31:05,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:05,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239749483] [2021-02-24 00:31:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:05,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:05,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:05,221 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:05,222 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:05,236 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:05,237 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:05,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:05,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:05,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:05,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:05,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:05,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239749483] [2021-02-24 00:31:05,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:05,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:31:05,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003782471] [2021-02-24 00:31:05,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:31:05,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:05,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:31:05,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:31:05,297 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 5 states. [2021-02-24 00:31:05,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:05,590 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2021-02-24 00:31:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:31:05,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2021-02-24 00:31:05,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:05,592 INFO L225 Difference]: With dead ends: 102 [2021-02-24 00:31:05,593 INFO L226 Difference]: Without dead ends: 76 [2021-02-24 00:31:05,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:05,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-24 00:31:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2021-02-24 00:31:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-02-24 00:31:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-02-24 00:31:05,618 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 50 [2021-02-24 00:31:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:05,619 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-02-24 00:31:05,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:31:05,619 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-02-24 00:31:05,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-24 00:31:05,620 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:05,620 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:05,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:31:05,621 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:05,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:05,621 INFO L82 PathProgramCache]: Analyzing trace with hash 389115954, now seen corresponding path program 1 times [2021-02-24 00:31:05,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:05,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383205715] [2021-02-24 00:31:05,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:05,717 WARN L141 QuantifierPusher]: treesize reduction 1, result has 93.8 percent of original size [2021-02-24 00:31:05,718 WARN L147 QuantifierPusher]: treesize reduction 1, result has 93.8 percent of original size 15 [2021-02-24 00:31:05,731 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size [2021-02-24 00:31:05,732 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size 18 [2021-02-24 00:31:05,749 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-24 00:31:05,751 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-24 00:31:05,773 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size [2021-02-24 00:31:05,774 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.0 percent of original size 24 [2021-02-24 00:31:05,802 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-02-24 00:31:05,803 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size 27 [2021-02-24 00:31:05,836 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-02-24 00:31:05,837 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size 30 [2021-02-24 00:31:05,875 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-24 00:31:05,875 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 33 [2021-02-24 00:31:05,919 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-02-24 00:31:05,920 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size 36 [2021-02-24 00:31:05,969 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-24 00:31:05,970 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-24 00:31:06,024 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-02-24 00:31:06,025 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size 42 [2021-02-24 00:31:06,085 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size [2021-02-24 00:31:06,086 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.8 percent of original size 45 [2021-02-24 00:31:06,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-24 00:31:06,226 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size [2021-02-24 00:31:06,227 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 108 [2021-02-24 00:31:06,342 WARN L141 QuantifierPusher]: treesize reduction 2, result has 99.1 percent of original size [2021-02-24 00:31:06,343 WARN L147 QuantifierPusher]: treesize reduction 2, result has 99.1 percent of original size 227 [2021-02-24 00:31:06,515 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2021-02-24 00:31:06,531 WARN L141 QuantifierPusher]: treesize reduction 2, result has 99.3 percent of original size [2021-02-24 00:31:06,534 WARN L147 QuantifierPusher]: treesize reduction 2, result has 99.3 percent of original size 270 [2021-02-24 00:31:06,698 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-02-24 00:31:06,702 WARN L141 QuantifierPusher]: treesize reduction 2, result has 99.2 percent of original size [2021-02-24 00:31:06,704 WARN L147 QuantifierPusher]: treesize reduction 2, result has 99.2 percent of original size 254 [2021-02-24 00:31:06,834 WARN L141 QuantifierPusher]: treesize reduction 17, result has 89.2 percent of original size [2021-02-24 00:31:06,837 WARN L147 QuantifierPusher]: treesize reduction 17, result has 89.2 percent of original size 140 [2021-02-24 00:31:06,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 00:31:06,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:06,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:06,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:06,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:06,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:06,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383205715] [2021-02-24 00:31:06,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:06,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-02-24 00:31:06,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686073767] [2021-02-24 00:31:06,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-24 00:31:06,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:06,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-24 00:31:06,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:31:06,973 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 20 states. [2021-02-24 00:31:07,410 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-02-24 00:31:07,671 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-02-24 00:31:07,803 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-02-24 00:31:07,941 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-02-24 00:31:08,089 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-02-24 00:31:08,242 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-02-24 00:31:08,426 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-02-24 00:31:08,645 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2021-02-24 00:31:08,943 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2021-02-24 00:31:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:09,461 INFO L93 Difference]: Finished difference Result 140 states and 176 transitions. [2021-02-24 00:31:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:31:09,461 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2021-02-24 00:31:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:09,463 INFO L225 Difference]: With dead ends: 140 [2021-02-24 00:31:09,463 INFO L226 Difference]: Without dead ends: 114 [2021-02-24 00:31:09,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2021-02-24 00:31:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-02-24 00:31:09,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 71. [2021-02-24 00:31:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-24 00:31:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2021-02-24 00:31:09,497 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 51 [2021-02-24 00:31:09,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:09,498 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2021-02-24 00:31:09,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-24 00:31:09,498 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2021-02-24 00:31:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-24 00:31:09,499 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:09,499 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:09,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 00:31:09,499 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:09,500 INFO L82 PathProgramCache]: Analyzing trace with hash 81363738, now seen corresponding path program 1 times [2021-02-24 00:31:09,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:09,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635538821] [2021-02-24 00:31:09,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:09,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:09,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:09,539 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:09,540 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:09,559 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:09,560 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:09,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:09,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:09,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:09,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:09,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:09,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635538821] [2021-02-24 00:31:09,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:09,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:31:09,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045911940] [2021-02-24 00:31:09,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:31:09,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:09,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:31:09,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:31:09,605 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 5 states. [2021-02-24 00:31:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:09,866 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2021-02-24 00:31:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:31:09,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2021-02-24 00:31:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:09,867 INFO L225 Difference]: With dead ends: 100 [2021-02-24 00:31:09,867 INFO L226 Difference]: Without dead ends: 74 [2021-02-24 00:31:09,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:09,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-02-24 00:31:09,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2021-02-24 00:31:09,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-02-24 00:31:09,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2021-02-24 00:31:09,900 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 52 [2021-02-24 00:31:09,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:09,900 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2021-02-24 00:31:09,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:31:09,900 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2021-02-24 00:31:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-24 00:31:09,901 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:09,901 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:09,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 00:31:09,902 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:09,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:09,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1465205062, now seen corresponding path program 1 times [2021-02-24 00:31:09,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:09,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868174952] [2021-02-24 00:31:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:09,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:09,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:09,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:09,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:31:09,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:09,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:09,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:31:10,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:10,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:10,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:31:10,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:10,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:10,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:31:10,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:10,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:31:10,279 WARN L141 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size [2021-02-24 00:31:10,284 WARN L147 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size 215 [2021-02-24 00:31:10,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:10,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:10,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:10,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:10,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:10,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:10,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:10,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:10,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868174952] [2021-02-24 00:31:10,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:10,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-02-24 00:31:10,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110093701] [2021-02-24 00:31:10,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-24 00:31:10,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:10,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-24 00:31:10,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:31:10,481 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 19 states. [2021-02-24 00:31:11,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:11,906 INFO L93 Difference]: Finished difference Result 119 states and 144 transitions. [2021-02-24 00:31:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 00:31:11,907 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2021-02-24 00:31:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:11,908 INFO L225 Difference]: With dead ends: 119 [2021-02-24 00:31:11,909 INFO L226 Difference]: Without dead ends: 117 [2021-02-24 00:31:11,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2021-02-24 00:31:11,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-02-24 00:31:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79. [2021-02-24 00:31:11,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-24 00:31:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-02-24 00:31:11,954 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 52 [2021-02-24 00:31:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:11,955 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-02-24 00:31:11,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-24 00:31:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-02-24 00:31:11,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-02-24 00:31:11,956 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:11,956 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:11,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 00:31:11,957 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:11,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:11,959 INFO L82 PathProgramCache]: Analyzing trace with hash -2035321656, now seen corresponding path program 2 times [2021-02-24 00:31:11,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:11,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150483556] [2021-02-24 00:31:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:12,065 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:12,066 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:12,083 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:12,084 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:12,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:12,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:12,130 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:12,131 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 101 [2021-02-24 00:31:12,221 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:12,222 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 107 [2021-02-24 00:31:12,252 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:12,253 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:31:12,299 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:31:12,299 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:31:12,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:12,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:12,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:12,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:12,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:12,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:12,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:12,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:12,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150483556] [2021-02-24 00:31:12,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:12,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:31:12,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359935056] [2021-02-24 00:31:12,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:31:12,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:12,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:31:12,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:31:12,417 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 10 states. [2021-02-24 00:31:13,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:13,316 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2021-02-24 00:31:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:31:13,316 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2021-02-24 00:31:13,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:13,318 INFO L225 Difference]: With dead ends: 123 [2021-02-24 00:31:13,318 INFO L226 Difference]: Without dead ends: 97 [2021-02-24 00:31:13,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:31:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-02-24 00:31:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2021-02-24 00:31:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-24 00:31:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2021-02-24 00:31:13,361 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 61 [2021-02-24 00:31:13,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:13,362 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2021-02-24 00:31:13,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:31:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2021-02-24 00:31:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-24 00:31:13,362 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:13,363 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:13,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 00:31:13,363 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:13,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:13,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1202559720, now seen corresponding path program 1 times [2021-02-24 00:31:13,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:13,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251818995] [2021-02-24 00:31:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:13,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:13,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:13,426 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:13,427 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:13,445 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:13,445 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:13,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:13,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:13,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:13,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:13,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251818995] [2021-02-24 00:31:13,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:13,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-24 00:31:13,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137393698] [2021-02-24 00:31:13,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:31:13,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:13,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:31:13,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:31:13,499 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 6 states. [2021-02-24 00:31:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:13,886 INFO L93 Difference]: Finished difference Result 122 states and 145 transitions. [2021-02-24 00:31:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:31:13,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2021-02-24 00:31:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:13,889 INFO L225 Difference]: With dead ends: 122 [2021-02-24 00:31:13,889 INFO L226 Difference]: Without dead ends: 96 [2021-02-24 00:31:13,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:31:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-02-24 00:31:13,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 82. [2021-02-24 00:31:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-24 00:31:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-02-24 00:31:13,923 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 62 [2021-02-24 00:31:13,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:13,924 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-02-24 00:31:13,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:31:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-02-24 00:31:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-24 00:31:13,925 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:13,925 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:13,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 00:31:13,925 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:13,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:13,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1330557822, now seen corresponding path program 1 times [2021-02-24 00:31:13,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:13,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348651015] [2021-02-24 00:31:13,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:13,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:13,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:13,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:13,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:13,984 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:31:13,985 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 91 [2021-02-24 00:31:14,031 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:14,033 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:31:14,047 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:31:14,048 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:31:14,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:14,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:14,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:14,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:14,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:14,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:14,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:14,110 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:14,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348651015] [2021-02-24 00:31:14,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:14,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-24 00:31:14,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783341966] [2021-02-24 00:31:14,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:31:14,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:14,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:31:14,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:31:14,113 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 6 states. [2021-02-24 00:31:14,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:14,536 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2021-02-24 00:31:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:31:14,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2021-02-24 00:31:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:14,539 INFO L225 Difference]: With dead ends: 121 [2021-02-24 00:31:14,539 INFO L226 Difference]: Without dead ends: 95 [2021-02-24 00:31:14,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:31:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-24 00:31:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 83. [2021-02-24 00:31:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-24 00:31:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-02-24 00:31:14,583 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 63 [2021-02-24 00:31:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:14,583 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-02-24 00:31:14,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:31:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-02-24 00:31:14,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-24 00:31:14,584 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:14,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:14,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 00:31:14,585 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:14,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:14,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1918951906, now seen corresponding path program 1 times [2021-02-24 00:31:14,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:14,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925023396] [2021-02-24 00:31:14,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:14,652 WARN L141 QuantifierPusher]: treesize reduction 1, result has 93.8 percent of original size [2021-02-24 00:31:14,653 WARN L147 QuantifierPusher]: treesize reduction 1, result has 93.8 percent of original size 15 [2021-02-24 00:31:14,666 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size [2021-02-24 00:31:14,667 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size 18 [2021-02-24 00:31:14,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:14,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:14,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-02-24 00:31:14,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-02-24 00:31:14,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-02-24 00:31:14,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:14,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:14,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:14,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:14,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:14,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:14,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:14,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:14,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925023396] [2021-02-24 00:31:14,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:14,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:31:14,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195060408] [2021-02-24 00:31:14,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:31:14,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:14,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:31:14,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:14,970 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 11 states. [2021-02-24 00:31:17,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:17,099 INFO L93 Difference]: Finished difference Result 120 states and 141 transitions. [2021-02-24 00:31:17,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:31:17,099 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2021-02-24 00:31:17,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:17,101 INFO L225 Difference]: With dead ends: 120 [2021-02-24 00:31:17,101 INFO L226 Difference]: Without dead ends: 94 [2021-02-24 00:31:17,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:31:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-02-24 00:31:17,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 84. [2021-02-24 00:31:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-02-24 00:31:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2021-02-24 00:31:17,150 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 64 [2021-02-24 00:31:17,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:17,150 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2021-02-24 00:31:17,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:31:17,151 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2021-02-24 00:31:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-24 00:31:17,151 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:17,151 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:17,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-24 00:31:17,152 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:17,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:17,152 INFO L82 PathProgramCache]: Analyzing trace with hash -253686724, now seen corresponding path program 1 times [2021-02-24 00:31:17,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:17,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683333433] [2021-02-24 00:31:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:17,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:17,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:17,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:17,210 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:31:17,211 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 87 [2021-02-24 00:31:17,259 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:17,260 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 95 [2021-02-24 00:31:17,279 WARN L141 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size [2021-02-24 00:31:17,279 WARN L147 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size 1 [2021-02-24 00:31:17,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:17,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:17,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:17,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:17,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:17,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:17,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683333433] [2021-02-24 00:31:17,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:17,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-24 00:31:17,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086749744] [2021-02-24 00:31:17,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:31:17,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:17,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:31:17,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:31:17,338 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 6 states. [2021-02-24 00:31:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:17,787 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2021-02-24 00:31:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:31:17,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2021-02-24 00:31:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:17,789 INFO L225 Difference]: With dead ends: 119 [2021-02-24 00:31:17,789 INFO L226 Difference]: Without dead ends: 93 [2021-02-24 00:31:17,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:31:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-02-24 00:31:17,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2021-02-24 00:31:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-24 00:31:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2021-02-24 00:31:17,841 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 65 [2021-02-24 00:31:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:17,842 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2021-02-24 00:31:17,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:31:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2021-02-24 00:31:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-24 00:31:17,843 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:17,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:17,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-24 00:31:17,843 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:17,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1285767388, now seen corresponding path program 1 times [2021-02-24 00:31:17,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:17,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279071855] [2021-02-24 00:31:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:17,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:17,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:17,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:17,890 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:17,891 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:17,909 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:17,909 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:17,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:17,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:17,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:17,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:17,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:17,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:17,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:17,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:17,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279071855] [2021-02-24 00:31:17,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:17,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-24 00:31:17,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574649636] [2021-02-24 00:31:17,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:31:17,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:17,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:31:17,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:31:17,959 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand 6 states. [2021-02-24 00:31:18,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:18,342 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2021-02-24 00:31:18,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:31:18,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2021-02-24 00:31:18,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:18,344 INFO L225 Difference]: With dead ends: 118 [2021-02-24 00:31:18,344 INFO L226 Difference]: Without dead ends: 92 [2021-02-24 00:31:18,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:31:18,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-02-24 00:31:18,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2021-02-24 00:31:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-24 00:31:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2021-02-24 00:31:18,388 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 66 [2021-02-24 00:31:18,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:18,388 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2021-02-24 00:31:18,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:31:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2021-02-24 00:31:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-24 00:31:18,389 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:18,390 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:18,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-24 00:31:18,390 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:18,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:18,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1935979510, now seen corresponding path program 1 times [2021-02-24 00:31:18,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:18,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363600572] [2021-02-24 00:31:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:18,454 WARN L141 QuantifierPusher]: treesize reduction 1, result has 93.8 percent of original size [2021-02-24 00:31:18,454 WARN L147 QuantifierPusher]: treesize reduction 1, result has 93.8 percent of original size 15 [2021-02-24 00:31:18,468 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size [2021-02-24 00:31:18,469 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size 18 [2021-02-24 00:31:18,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:18,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:18,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:18,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 00:31:18,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:18,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-02-24 00:31:18,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:18,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-02-24 00:31:18,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:18,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-02-24 00:31:18,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:18,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:18,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:18,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:18,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:18,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:18,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:18,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:18,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:18,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:18,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:18,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:18,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363600572] [2021-02-24 00:31:18,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:18,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:31:18,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548611568] [2021-02-24 00:31:18,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:31:18,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:18,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:31:18,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:18,757 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 11 states. [2021-02-24 00:31:26,619 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2021-02-24 00:31:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:31,005 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2021-02-24 00:31:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:31:31,006 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2021-02-24 00:31:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:31,008 INFO L225 Difference]: With dead ends: 130 [2021-02-24 00:31:31,008 INFO L226 Difference]: Without dead ends: 104 [2021-02-24 00:31:31,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:31:31,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-02-24 00:31:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2021-02-24 00:31:31,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-02-24 00:31:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2021-02-24 00:31:31,080 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 67 [2021-02-24 00:31:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:31,080 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2021-02-24 00:31:31,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:31:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2021-02-24 00:31:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-24 00:31:31,081 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:31,081 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:31,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-24 00:31:31,082 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:31,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:31,082 INFO L82 PathProgramCache]: Analyzing trace with hash 789493718, now seen corresponding path program 1 times [2021-02-24 00:31:31,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:31,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298223739] [2021-02-24 00:31:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:31,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:31,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:31,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:31,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:31:31,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:31,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:31:31,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:31,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:31,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:31:31,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:31,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:31,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:31:31,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:31,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:31:31,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:31:31,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 00:31:31,557 WARN L141 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size [2021-02-24 00:31:31,562 WARN L147 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size 216 [2021-02-24 00:31:31,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:31,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:31,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:31,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:31,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:31,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:31,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:31,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:31,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:31:31,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298223739] [2021-02-24 00:31:31,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:31,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-02-24 00:31:31,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332683355] [2021-02-24 00:31:31,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-24 00:31:31,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:31,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-24 00:31:31,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-02-24 00:31:31,817 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 21 states. [2021-02-24 00:31:33,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:33,681 INFO L93 Difference]: Finished difference Result 164 states and 201 transitions. [2021-02-24 00:31:33,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-24 00:31:33,682 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2021-02-24 00:31:33,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:33,683 INFO L225 Difference]: With dead ends: 164 [2021-02-24 00:31:33,684 INFO L226 Difference]: Without dead ends: 162 [2021-02-24 00:31:33,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2021-02-24 00:31:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-02-24 00:31:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 120. [2021-02-24 00:31:33,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-02-24 00:31:33,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2021-02-24 00:31:33,760 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 68 [2021-02-24 00:31:33,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:33,761 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2021-02-24 00:31:33,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-24 00:31:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2021-02-24 00:31:33,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-24 00:31:33,762 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:33,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:33,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-24 00:31:33,763 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:33,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1497629908, now seen corresponding path program 2 times [2021-02-24 00:31:33,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:33,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366208141] [2021-02-24 00:31:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:33,825 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:33,826 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:33,845 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:33,846 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:33,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:33,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:33,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:33,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:33,912 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:33,913 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 101 [2021-02-24 00:31:33,999 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:34,000 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 107 [2021-02-24 00:31:34,042 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:34,043 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:31:34,104 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:31:34,104 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:31:34,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:34,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:34,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:34,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:34,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:34,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:34,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:34,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:34,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:34,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:34,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:34,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:34,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:31:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:34,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:34,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:31:34,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366208141] [2021-02-24 00:31:34,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:34,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:31:34,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915756027] [2021-02-24 00:31:34,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:31:34,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:34,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:31:34,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:34,225 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 11 states. [2021-02-24 00:31:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:35,502 INFO L93 Difference]: Finished difference Result 173 states and 210 transitions. [2021-02-24 00:31:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:31:35,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2021-02-24 00:31:35,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:35,504 INFO L225 Difference]: With dead ends: 173 [2021-02-24 00:31:35,504 INFO L226 Difference]: Without dead ends: 113 [2021-02-24 00:31:35,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:31:35,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-02-24 00:31:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2021-02-24 00:31:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-24 00:31:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2021-02-24 00:31:35,558 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 77 [2021-02-24 00:31:35,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:35,558 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2021-02-24 00:31:35,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:31:35,558 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2021-02-24 00:31:35,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-24 00:31:35,559 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:35,559 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:35,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-24 00:31:35,559 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:35,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:35,560 INFO L82 PathProgramCache]: Analyzing trace with hash 691134724, now seen corresponding path program 1 times [2021-02-24 00:31:35,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:35,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802204003] [2021-02-24 00:31:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:35,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:35,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:35,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:35,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:35,622 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:35,623 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:35,644 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:35,644 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:35,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:35,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:35,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:35,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:35,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:35,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:35,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:31:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:35,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:31:35,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802204003] [2021-02-24 00:31:35,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:35,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:31:35,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035451084] [2021-02-24 00:31:35,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:31:35,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:35,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:31:35,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:35,704 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 7 states. [2021-02-24 00:31:36,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:36,442 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2021-02-24 00:31:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:31:36,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2021-02-24 00:31:36,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:36,444 INFO L225 Difference]: With dead ends: 138 [2021-02-24 00:31:36,444 INFO L226 Difference]: Without dead ends: 112 [2021-02-24 00:31:36,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-02-24 00:31:36,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 98. [2021-02-24 00:31:36,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-02-24 00:31:36,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2021-02-24 00:31:36,509 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 78 [2021-02-24 00:31:36,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:36,510 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2021-02-24 00:31:36,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:31:36,510 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2021-02-24 00:31:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-02-24 00:31:36,511 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:36,511 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:36,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-24 00:31:36,512 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:36,512 INFO L82 PathProgramCache]: Analyzing trace with hash -4863514, now seen corresponding path program 1 times [2021-02-24 00:31:36,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:36,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768698331] [2021-02-24 00:31:36,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:36,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:36,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:36,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:36,589 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:31:36,589 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 91 [2021-02-24 00:31:36,649 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:36,650 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:31:36,668 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:31:36,668 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:31:36,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:36,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:36,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:36,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:31:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:36,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:31:36,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768698331] [2021-02-24 00:31:36,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:36,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:31:36,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010119453] [2021-02-24 00:31:36,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:31:36,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:36,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:31:36,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:36,738 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 7 states. [2021-02-24 00:31:37,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:37,401 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2021-02-24 00:31:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:31:37,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2021-02-24 00:31:37,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:37,403 INFO L225 Difference]: With dead ends: 137 [2021-02-24 00:31:37,403 INFO L226 Difference]: Without dead ends: 111 [2021-02-24 00:31:37,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:37,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-24 00:31:37,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2021-02-24 00:31:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-02-24 00:31:37,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2021-02-24 00:31:37,450 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 79 [2021-02-24 00:31:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:37,450 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2021-02-24 00:31:37,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:31:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2021-02-24 00:31:37,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-24 00:31:37,451 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:37,451 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:37,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-24 00:31:37,452 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:37,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:37,452 INFO L82 PathProgramCache]: Analyzing trace with hash 65802494, now seen corresponding path program 1 times [2021-02-24 00:31:37,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:37,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617685259] [2021-02-24 00:31:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:37,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:37,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 00:31:37,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 00:31:37,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-02-24 00:31:37,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:37,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:37,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:37,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:31:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:37,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:37,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:31:37,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617685259] [2021-02-24 00:31:37,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:37,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:31:37,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084307741] [2021-02-24 00:31:37,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:31:37,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:37,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:31:37,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:37,613 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 7 states. [2021-02-24 00:31:40,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:40,567 INFO L93 Difference]: Finished difference Result 156 states and 190 transitions. [2021-02-24 00:31:40,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:31:40,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2021-02-24 00:31:40,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:40,569 INFO L225 Difference]: With dead ends: 156 [2021-02-24 00:31:40,569 INFO L226 Difference]: Without dead ends: 130 [2021-02-24 00:31:40,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:31:40,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-02-24 00:31:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2021-02-24 00:31:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-02-24 00:31:40,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2021-02-24 00:31:40,675 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 80 [2021-02-24 00:31:40,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:40,675 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2021-02-24 00:31:40,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:31:40,676 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2021-02-24 00:31:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-02-24 00:31:40,676 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:40,677 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:40,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-24 00:31:40,677 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:40,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1866743648, now seen corresponding path program 1 times [2021-02-24 00:31:40,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:40,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941093422] [2021-02-24 00:31:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:40,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:40,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:40,793 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:31:40,794 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 87 [2021-02-24 00:31:40,841 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:40,842 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 95 [2021-02-24 00:31:40,873 WARN L141 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size [2021-02-24 00:31:40,873 WARN L147 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size 1 [2021-02-24 00:31:40,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:31:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:40,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:40,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:31:40,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941093422] [2021-02-24 00:31:40,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:40,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:31:40,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717479589] [2021-02-24 00:31:40,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:31:40,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:40,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:31:40,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:40,947 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 7 states. [2021-02-24 00:31:41,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:41,753 INFO L93 Difference]: Finished difference Result 191 states and 235 transitions. [2021-02-24 00:31:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:31:41,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2021-02-24 00:31:41,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:41,755 INFO L225 Difference]: With dead ends: 191 [2021-02-24 00:31:41,755 INFO L226 Difference]: Without dead ends: 136 [2021-02-24 00:31:41,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:41,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-02-24 00:31:41,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 130. [2021-02-24 00:31:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-02-24 00:31:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2021-02-24 00:31:41,838 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 81 [2021-02-24 00:31:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:41,838 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2021-02-24 00:31:41,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:31:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2021-02-24 00:31:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-24 00:31:41,839 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:41,839 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:41,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-24 00:31:41,840 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:41,840 INFO L82 PathProgramCache]: Analyzing trace with hash -2023497894, now seen corresponding path program 1 times [2021-02-24 00:31:41,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:41,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821432210] [2021-02-24 00:31:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:41,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:41,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:41,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:41,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:31:41,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:41,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:31:41,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:41,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:31:42,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:42,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:31:42,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:31:42,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:42,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:31:42,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:42,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:31:42,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:31:42,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 00:31:42,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:31:42,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:31:42,551 WARN L141 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size [2021-02-24 00:31:42,553 WARN L147 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size 217 [2021-02-24 00:31:42,718 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-02-24 00:31:42,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:42,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:42,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:42,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:42,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:42,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:42,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:42,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:42,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:42,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:31:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:42,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:42,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:31:42,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821432210] [2021-02-24 00:31:42,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:42,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-02-24 00:31:42,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108438669] [2021-02-24 00:31:42,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-24 00:31:42,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:42,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-24 00:31:42,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2021-02-24 00:31:42,875 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 23 states. [2021-02-24 00:31:45,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:45,270 INFO L93 Difference]: Finished difference Result 240 states and 303 transitions. [2021-02-24 00:31:45,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-24 00:31:45,271 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 83 [2021-02-24 00:31:45,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:45,274 INFO L225 Difference]: With dead ends: 240 [2021-02-24 00:31:45,274 INFO L226 Difference]: Without dead ends: 238 [2021-02-24 00:31:45,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=361, Invalid=1531, Unknown=0, NotChecked=0, Total=1892 [2021-02-24 00:31:45,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-02-24 00:31:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 166. [2021-02-24 00:31:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2021-02-24 00:31:45,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 201 transitions. [2021-02-24 00:31:45,390 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 201 transitions. Word has length 83 [2021-02-24 00:31:45,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:45,390 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 201 transitions. [2021-02-24 00:31:45,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-24 00:31:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 201 transitions. [2021-02-24 00:31:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-02-24 00:31:45,392 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:45,392 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:45,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-24 00:31:45,392 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:45,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:45,393 INFO L82 PathProgramCache]: Analyzing trace with hash 69273640, now seen corresponding path program 2 times [2021-02-24 00:31:45,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:45,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858080376] [2021-02-24 00:31:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:45,460 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:45,461 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:45,487 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:45,488 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:45,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:45,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:45,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:45,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:31:45,611 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:45,612 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 101 [2021-02-24 00:31:45,711 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:31:45,712 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 107 [2021-02-24 00:31:45,777 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:45,778 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:31:45,876 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:31:45,877 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:31:45,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:45,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:45,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:45,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:45,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:45,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:45,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:31:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:45,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:45,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:31:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:45,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:45,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 17 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:31:46,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858080376] [2021-02-24 00:31:46,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:46,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:31:46,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655008603] [2021-02-24 00:31:46,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:31:46,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:46,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:31:46,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:31:46,035 INFO L87 Difference]: Start difference. First operand 166 states and 201 transitions. Second operand 12 states. [2021-02-24 00:31:47,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:47,893 INFO L93 Difference]: Finished difference Result 248 states and 312 transitions. [2021-02-24 00:31:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:31:47,894 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2021-02-24 00:31:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:47,896 INFO L225 Difference]: With dead ends: 248 [2021-02-24 00:31:47,896 INFO L226 Difference]: Without dead ends: 157 [2021-02-24 00:31:47,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:31:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-02-24 00:31:48,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 141. [2021-02-24 00:31:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-02-24 00:31:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 162 transitions. [2021-02-24 00:31:48,014 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 162 transitions. Word has length 92 [2021-02-24 00:31:48,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:48,014 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 162 transitions. [2021-02-24 00:31:48,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:31:48,015 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 162 transitions. [2021-02-24 00:31:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-02-24 00:31:48,016 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:48,016 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:48,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-24 00:31:48,016 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:48,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:48,017 INFO L82 PathProgramCache]: Analyzing trace with hash 2020504456, now seen corresponding path program 1 times [2021-02-24 00:31:48,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:48,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463569550] [2021-02-24 00:31:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:48,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:48,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:48,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:48,127 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:31:48,127 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:31:48,160 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:31:48,161 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:31:48,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:31:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:31:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:48,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:48,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 54 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:31:48,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463569550] [2021-02-24 00:31:48,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:48,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:31:48,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714032243] [2021-02-24 00:31:48,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:31:48,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:48,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:31:48,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:31:48,249 INFO L87 Difference]: Start difference. First operand 141 states and 162 transitions. Second operand 8 states. [2021-02-24 00:31:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:49,250 INFO L93 Difference]: Finished difference Result 211 states and 259 transitions. [2021-02-24 00:31:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:31:49,251 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2021-02-24 00:31:49,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:49,255 INFO L225 Difference]: With dead ends: 211 [2021-02-24 00:31:49,255 INFO L226 Difference]: Without dead ends: 156 [2021-02-24 00:31:49,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:31:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-02-24 00:31:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2021-02-24 00:31:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-02-24 00:31:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2021-02-24 00:31:49,334 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 93 [2021-02-24 00:31:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:49,335 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2021-02-24 00:31:49,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:31:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2021-02-24 00:31:49,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-02-24 00:31:49,336 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:49,336 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:49,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-24 00:31:49,336 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:49,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:49,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1744074782, now seen corresponding path program 1 times [2021-02-24 00:31:49,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:49,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304639394] [2021-02-24 00:31:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:49,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:49,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:49,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:49,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:49,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:49,447 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:31:49,448 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 91 [2021-02-24 00:31:49,506 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:31:49,507 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:31:49,545 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:31:49,545 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:31:49,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:49,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:49,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:49,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:49,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:49,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:49,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:31:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:49,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:31:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:49,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:49,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:31:49,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304639394] [2021-02-24 00:31:49,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:49,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:31:49,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610954819] [2021-02-24 00:31:49,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:31:49,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:49,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:31:49,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:31:49,645 INFO L87 Difference]: Start difference. First operand 142 states and 163 transitions. Second operand 8 states. [2021-02-24 00:31:50,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:50,647 INFO L93 Difference]: Finished difference Result 210 states and 257 transitions. [2021-02-24 00:31:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:31:50,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2021-02-24 00:31:50,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:50,649 INFO L225 Difference]: With dead ends: 210 [2021-02-24 00:31:50,649 INFO L226 Difference]: Without dead ends: 155 [2021-02-24 00:31:50,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:31:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-02-24 00:31:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 143. [2021-02-24 00:31:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-02-24 00:31:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 164 transitions. [2021-02-24 00:31:50,770 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 164 transitions. Word has length 94 [2021-02-24 00:31:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:50,770 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 164 transitions. [2021-02-24 00:31:50,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:31:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 164 transitions. [2021-02-24 00:31:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-02-24 00:31:50,771 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:50,771 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:31:50,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-02-24 00:31:50,772 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:50,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:50,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1984828034, now seen corresponding path program 1 times [2021-02-24 00:31:50,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:50,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755432000] [2021-02-24 00:31:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:50,875 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:31:50,876 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:31:50,902 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:50,903 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:50,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:31:50,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:50,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:50,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:51,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:51,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:31:51,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:51,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-02-24 00:31:53,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-02-24 00:31:53,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-02-24 00:31:53,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:53,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:53,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:53,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:53,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:31:54,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:31:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:54,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:31:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:54,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:31:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:54,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:31:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:54,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:54,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 60 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:31:54,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755432000] [2021-02-24 00:31:54,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:54,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:31:54,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305763150] [2021-02-24 00:31:54,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:31:54,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:54,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:31:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=126, Unknown=1, NotChecked=0, Total=156 [2021-02-24 00:31:54,087 INFO L87 Difference]: Start difference. First operand 143 states and 164 transitions. Second operand 13 states. [2021-02-24 00:31:54,671 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2021-02-24 00:31:57,859 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2021-02-24 00:32:00,195 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-02-24 00:32:00,590 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2021-02-24 00:32:17,497 WARN L202 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2021-02-24 00:32:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:23,574 INFO L93 Difference]: Finished difference Result 205 states and 248 transitions. [2021-02-24 00:32:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:32:23,575 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2021-02-24 00:32:23,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:23,577 INFO L225 Difference]: With dead ends: 205 [2021-02-24 00:32:23,577 INFO L226 Difference]: Without dead ends: 150 [2021-02-24 00:32:23,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=135, Invalid=514, Unknown=1, NotChecked=0, Total=650 [2021-02-24 00:32:23,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-02-24 00:32:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 144. [2021-02-24 00:32:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2021-02-24 00:32:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 165 transitions. [2021-02-24 00:32:23,730 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 165 transitions. Word has length 95 [2021-02-24 00:32:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:23,731 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 165 transitions. [2021-02-24 00:32:23,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:32:23,731 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 165 transitions. [2021-02-24 00:32:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-24 00:32:23,732 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:23,732 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:23,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-02-24 00:32:23,733 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:23,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:23,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1788473244, now seen corresponding path program 1 times [2021-02-24 00:32:23,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:23,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047465975] [2021-02-24 00:32:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:23,834 WARN L141 QuantifierPusher]: treesize reduction 1, result has 93.8 percent of original size [2021-02-24 00:32:23,834 WARN L147 QuantifierPusher]: treesize reduction 1, result has 93.8 percent of original size 15 [2021-02-24 00:32:23,856 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size [2021-02-24 00:32:23,857 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.7 percent of original size 18 [2021-02-24 00:32:23,886 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-24 00:32:23,886 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-24 00:32:23,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:23,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:32:23,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:23,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:32:23,966 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size [2021-02-24 00:32:23,967 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.6 percent of original size 41 [2021-02-24 00:32:24,017 WARN L141 QuantifierPusher]: treesize reduction 7, result has 81.6 percent of original size [2021-02-24 00:32:24,018 WARN L147 QuantifierPusher]: treesize reduction 7, result has 81.6 percent of original size 31 [2021-02-24 00:32:24,040 WARN L141 QuantifierPusher]: treesize reduction 7, result has 81.6 percent of original size [2021-02-24 00:32:24,040 WARN L147 QuantifierPusher]: treesize reduction 7, result has 81.6 percent of original size 31 [2021-02-24 00:32:24,063 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.2 percent of original size [2021-02-24 00:32:24,064 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.2 percent of original size 121 [2021-02-24 00:32:24,205 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:32:24,206 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 111 [2021-02-24 00:32:24,251 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:32:24,252 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 95 [2021-02-24 00:32:24,324 WARN L141 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size [2021-02-24 00:32:24,325 WARN L147 QuantifierPusher]: treesize reduction 119, result has 0.8 percent of original size 1 [2021-02-24 00:32:24,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:24,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:24,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:24,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:24,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:24,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:24,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:24,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:24,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:24,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:24,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:24,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:24,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:24,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:24,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:24,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:24,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:24,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:24,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:32:24,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047465975] [2021-02-24 00:32:24,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:24,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:32:24,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332882072] [2021-02-24 00:32:24,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:32:24,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:24,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:32:24,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:32:24,480 INFO L87 Difference]: Start difference. First operand 144 states and 165 transitions. Second operand 12 states. [2021-02-24 00:32:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:26,051 INFO L93 Difference]: Finished difference Result 203 states and 247 transitions. [2021-02-24 00:32:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:32:26,053 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2021-02-24 00:32:26,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:26,056 INFO L225 Difference]: With dead ends: 203 [2021-02-24 00:32:26,056 INFO L226 Difference]: Without dead ends: 148 [2021-02-24 00:32:26,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:32:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-02-24 00:32:26,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2021-02-24 00:32:26,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-02-24 00:32:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2021-02-24 00:32:26,144 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 96 [2021-02-24 00:32:26,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:26,144 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2021-02-24 00:32:26,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:32:26,144 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2021-02-24 00:32:26,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-02-24 00:32:26,145 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:26,146 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:26,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-02-24 00:32:26,146 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:26,147 INFO L82 PathProgramCache]: Analyzing trace with hash 168216956, now seen corresponding path program 1 times [2021-02-24 00:32:26,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:26,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571886846] [2021-02-24 00:32:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:26,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:26,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:26,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:26,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:32:26,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:32:26,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:32:26,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:32:26,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:32:26,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:32:26,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:26,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:26,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:32:26,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:26,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:32:26,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:26,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 00:32:26,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:26,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:32:26,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:32:26,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:26,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:32:26,899 WARN L141 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size [2021-02-24 00:32:26,901 WARN L147 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size 218 [2021-02-24 00:32:27,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:27,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:27,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:27,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:27,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:27,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:27,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:27,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:27,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:27,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:27,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:27,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:27,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:27,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:27,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:27,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:27,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:27,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:27,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:27,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:27,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 74 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:32:27,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571886846] [2021-02-24 00:32:27,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:27,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-02-24 00:32:27,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484839935] [2021-02-24 00:32:27,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-24 00:32:27,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:27,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-24 00:32:27,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-02-24 00:32:27,205 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand 25 states. [2021-02-24 00:32:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:30,077 INFO L93 Difference]: Finished difference Result 169 states and 194 transitions. [2021-02-24 00:32:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-24 00:32:30,078 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 97 [2021-02-24 00:32:30,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:30,080 INFO L225 Difference]: With dead ends: 169 [2021-02-24 00:32:30,081 INFO L226 Difference]: Without dead ends: 167 [2021-02-24 00:32:30,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=400, Invalid=1856, Unknown=0, NotChecked=0, Total=2256 [2021-02-24 00:32:30,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-02-24 00:32:30,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 153. [2021-02-24 00:32:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-02-24 00:32:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2021-02-24 00:32:30,193 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 97 [2021-02-24 00:32:30,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:30,193 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2021-02-24 00:32:30,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-24 00:32:30,193 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2021-02-24 00:32:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-02-24 00:32:30,194 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:30,194 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:30,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-02-24 00:32:30,195 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:30,195 INFO L82 PathProgramCache]: Analyzing trace with hash -353999802, now seen corresponding path program 2 times [2021-02-24 00:32:30,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:30,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536639949] [2021-02-24 00:32:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:30,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:30,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:30,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:30,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:30,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:30,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:30,315 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:32:30,316 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 91 [2021-02-24 00:32:30,370 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:32:30,371 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:32:30,405 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:32:30,406 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:32:30,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:30,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:30,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:30,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:30,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:30,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:30,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:30,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:30,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:30,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:30,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:32:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:30,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:30,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-24 00:32:30,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536639949] [2021-02-24 00:32:30,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:30,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:32:30,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538585486] [2021-02-24 00:32:30,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:32:30,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:30,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:32:30,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:32:30,503 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand 9 states. [2021-02-24 00:32:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:31,683 INFO L93 Difference]: Finished difference Result 222 states and 268 transitions. [2021-02-24 00:32:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:32:31,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2021-02-24 00:32:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:31,685 INFO L225 Difference]: With dead ends: 222 [2021-02-24 00:32:31,686 INFO L226 Difference]: Without dead ends: 167 [2021-02-24 00:32:31,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:32:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-02-24 00:32:31,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 155. [2021-02-24 00:32:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2021-02-24 00:32:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 176 transitions. [2021-02-24 00:32:31,811 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 176 transitions. Word has length 106 [2021-02-24 00:32:31,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:31,812 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 176 transitions. [2021-02-24 00:32:31,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:32:31,812 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 176 transitions. [2021-02-24 00:32:31,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-02-24 00:32:31,813 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:31,813 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:31,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-02-24 00:32:31,813 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:31,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:31,814 INFO L82 PathProgramCache]: Analyzing trace with hash -487959424, now seen corresponding path program 1 times [2021-02-24 00:32:31,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:31,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833899345] [2021-02-24 00:32:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:31,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:31,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:31,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:31,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:31,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:31,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:31,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:31,943 WARN L141 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size [2021-02-24 00:32:31,945 WARN L147 QuantifierPusher]: treesize reduction 2, result has 98.2 percent of original size 107 [2021-02-24 00:32:32,019 WARN L141 QuantifierPusher]: treesize reduction 16, result has 86.3 percent of original size [2021-02-24 00:32:32,020 WARN L147 QuantifierPusher]: treesize reduction 16, result has 86.3 percent of original size 101 [2021-02-24 00:32:32,054 WARN L141 QuantifierPusher]: treesize reduction 97, result has 47.6 percent of original size [2021-02-24 00:32:32,055 WARN L147 QuantifierPusher]: treesize reduction 97, result has 47.6 percent of original size 88 [2021-02-24 00:32:32,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:32,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:32,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:32,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:32,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:32,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:32,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:32,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:32,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:32,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:32,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:32,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:32,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:32,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:32,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:32,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:32,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:32:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:32,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:32,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 20 proven. 92 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-24 00:32:32,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833899345] [2021-02-24 00:32:32,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:32,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:32:32,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869138422] [2021-02-24 00:32:32,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:32:32,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:32,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:32:32,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:32:32,182 INFO L87 Difference]: Start difference. First operand 155 states and 176 transitions. Second operand 9 states. [2021-02-24 00:32:33,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:33,361 INFO L93 Difference]: Finished difference Result 221 states and 266 transitions. [2021-02-24 00:32:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:32:33,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2021-02-24 00:32:33,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:33,363 INFO L225 Difference]: With dead ends: 221 [2021-02-24 00:32:33,363 INFO L226 Difference]: Without dead ends: 166 [2021-02-24 00:32:33,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:32:33,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-02-24 00:32:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 157. [2021-02-24 00:32:33,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-02-24 00:32:33,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 178 transitions. [2021-02-24 00:32:33,471 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 178 transitions. Word has length 108 [2021-02-24 00:32:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:33,471 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 178 transitions. [2021-02-24 00:32:33,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:32:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 178 transitions. [2021-02-24 00:32:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-02-24 00:32:33,472 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:33,472 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:33,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-02-24 00:32:33,473 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:33,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:33,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2029522106, now seen corresponding path program 1 times [2021-02-24 00:32:33,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:33,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475789540] [2021-02-24 00:32:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:33,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:33,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:33,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:33,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:32:33,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:32:33,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:32:33,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:32:33,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:32:33,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:32:33,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:33,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:33,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:32:33,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:33,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:32:33,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:33,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:34,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 00:32:34,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:34,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:32:34,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:32:34,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:32:34,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:32:34,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:34,328 WARN L141 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size [2021-02-24 00:32:34,329 WARN L147 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size 219 [2021-02-24 00:32:34,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:34,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:34,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:34,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:34,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:34,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:34,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:34,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:34,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:34,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:34,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:34,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:32:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:34,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:34,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 110 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-24 00:32:34,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475789540] [2021-02-24 00:32:34,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:34,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-02-24 00:32:34,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888644488] [2021-02-24 00:32:34,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-24 00:32:34,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:34,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-24 00:32:34,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2021-02-24 00:32:34,658 INFO L87 Difference]: Start difference. First operand 157 states and 178 transitions. Second operand 27 states. [2021-02-24 00:32:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:37,918 INFO L93 Difference]: Finished difference Result 261 states and 325 transitions. [2021-02-24 00:32:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-24 00:32:37,919 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 110 [2021-02-24 00:32:37,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:37,921 INFO L225 Difference]: With dead ends: 261 [2021-02-24 00:32:37,921 INFO L226 Difference]: Without dead ends: 259 [2021-02-24 00:32:37,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=445, Invalid=2207, Unknown=0, NotChecked=0, Total=2652 [2021-02-24 00:32:37,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-02-24 00:32:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 211. [2021-02-24 00:32:38,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2021-02-24 00:32:38,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 256 transitions. [2021-02-24 00:32:38,155 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 256 transitions. Word has length 110 [2021-02-24 00:32:38,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:38,155 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 256 transitions. [2021-02-24 00:32:38,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-24 00:32:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 256 transitions. [2021-02-24 00:32:38,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-02-24 00:32:38,157 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:38,157 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:38,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-02-24 00:32:38,157 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:38,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:38,158 INFO L82 PathProgramCache]: Analyzing trace with hash 494528200, now seen corresponding path program 2 times [2021-02-24 00:32:38,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:38,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840077087] [2021-02-24 00:32:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:38,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:38,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:38,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:38,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:38,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:38,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:38,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:38,347 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:32:38,348 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 91 [2021-02-24 00:32:38,420 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:32:38,421 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:32:38,459 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:32:38,460 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:32:38,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:38,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:38,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:38,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:38,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:38,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:38,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:38,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:38,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:38,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:38,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:38,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:32:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:38,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:38,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-02-24 00:32:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:38,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:38,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 25 proven. 122 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-24 00:32:38,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840077087] [2021-02-24 00:32:38,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:38,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:32:38,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923622527] [2021-02-24 00:32:38,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:32:38,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:38,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:32:38,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:32:38,569 INFO L87 Difference]: Start difference. First operand 211 states and 256 transitions. Second operand 10 states. [2021-02-24 00:32:40,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:40,020 INFO L93 Difference]: Finished difference Result 292 states and 366 transitions. [2021-02-24 00:32:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:32:40,022 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2021-02-24 00:32:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:40,023 INFO L225 Difference]: With dead ends: 292 [2021-02-24 00:32:40,023 INFO L226 Difference]: Without dead ends: 183 [2021-02-24 00:32:40,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:32:40,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-02-24 00:32:40,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2021-02-24 00:32:40,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2021-02-24 00:32:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 196 transitions. [2021-02-24 00:32:40,133 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 196 transitions. Word has length 119 [2021-02-24 00:32:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:40,134 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 196 transitions. [2021-02-24 00:32:40,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:32:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 196 transitions. [2021-02-24 00:32:40,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-02-24 00:32:40,135 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:40,135 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:40,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-02-24 00:32:40,135 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:40,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:40,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1976473368, now seen corresponding path program 1 times [2021-02-24 00:32:40,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:40,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008703451] [2021-02-24 00:32:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:40,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:40,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:40,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:40,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:40,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:40,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:40,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:40,267 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:32:40,268 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:32:40,311 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:32:40,312 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:32:40,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:40,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:40,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:40,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:40,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:40,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:40,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:40,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:40,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:40,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:32:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:40,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:40,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-02-24 00:32:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:40,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:40,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 24 proven. 127 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-24 00:32:40,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008703451] [2021-02-24 00:32:40,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:40,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:32:40,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277068961] [2021-02-24 00:32:40,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:32:40,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:40,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:32:40,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:32:40,416 INFO L87 Difference]: Start difference. First operand 172 states and 196 transitions. Second operand 10 states. [2021-02-24 00:32:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:41,771 INFO L93 Difference]: Finished difference Result 236 states and 283 transitions. [2021-02-24 00:32:41,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:32:41,771 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2021-02-24 00:32:41,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:41,773 INFO L225 Difference]: With dead ends: 236 [2021-02-24 00:32:41,773 INFO L226 Difference]: Without dead ends: 181 [2021-02-24 00:32:41,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:32:41,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-02-24 00:32:41,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 173. [2021-02-24 00:32:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2021-02-24 00:32:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 196 transitions. [2021-02-24 00:32:41,877 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 196 transitions. Word has length 120 [2021-02-24 00:32:41,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:41,878 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 196 transitions. [2021-02-24 00:32:41,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:32:41,878 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 196 transitions. [2021-02-24 00:32:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-02-24 00:32:41,878 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:41,879 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:41,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-02-24 00:32:41,879 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:41,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:41,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1096335742, now seen corresponding path program 1 times [2021-02-24 00:32:41,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:41,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35859891] [2021-02-24 00:32:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:41,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:41,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:41,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:41,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:41,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:41,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:41,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:41,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:41,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:41,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:42,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:42,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:42,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:42,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:42,047 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:32:42,048 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 91 [2021-02-24 00:32:42,127 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:32:42,128 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:32:42,177 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:32:42,177 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:32:42,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:42,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:42,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:42,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:42,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:42,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:42,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:42,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:42,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:42,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:42,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:42,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:42,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:42,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:42,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:42,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:42,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:42,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:32:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:42,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:42,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:42,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-02-24 00:32:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:42,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:42,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 24 proven. 132 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-24 00:32:42,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35859891] [2021-02-24 00:32:42,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:42,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:32:42,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894476525] [2021-02-24 00:32:42,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:32:42,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:42,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:32:42,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:32:42,279 INFO L87 Difference]: Start difference. First operand 173 states and 196 transitions. Second operand 10 states. [2021-02-24 00:32:43,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:43,618 INFO L93 Difference]: Finished difference Result 230 states and 274 transitions. [2021-02-24 00:32:43,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:32:43,619 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 121 [2021-02-24 00:32:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:43,620 INFO L225 Difference]: With dead ends: 230 [2021-02-24 00:32:43,620 INFO L226 Difference]: Without dead ends: 173 [2021-02-24 00:32:43,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:32:43,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-02-24 00:32:43,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2021-02-24 00:32:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2021-02-24 00:32:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 192 transitions. [2021-02-24 00:32:43,727 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 192 transitions. Word has length 121 [2021-02-24 00:32:43,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:43,727 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 192 transitions. [2021-02-24 00:32:43,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:32:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 192 transitions. [2021-02-24 00:32:43,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-02-24 00:32:43,728 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:43,728 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:43,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-02-24 00:32:43,728 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:43,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash 589901794, now seen corresponding path program 1 times [2021-02-24 00:32:43,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:43,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865569375] [2021-02-24 00:32:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:43,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:43,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:43,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:43,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:43,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:43,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:43,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:43,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:32:43,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:43,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:32:43,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:43,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:32:43,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:43,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:32:43,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:43,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:32:43,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:43,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:32:44,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:44,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:44,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:32:44,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:44,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:32:44,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:44,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 00:32:44,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:44,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:32:44,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:32:44,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:32:44,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:32:44,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:44,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:44,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:44,699 WARN L141 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size [2021-02-24 00:32:44,700 WARN L147 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size 220 [2021-02-24 00:32:44,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:44,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:44,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:44,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:44,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:44,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:44,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:44,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:44,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:44,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:44,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:32:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:44,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:44,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-02-24 00:32:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:44,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:44,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 12 proven. 149 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-24 00:32:45,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865569375] [2021-02-24 00:32:45,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:45,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-02-24 00:32:45,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044001118] [2021-02-24 00:32:45,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-24 00:32:45,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:45,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-24 00:32:45,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2021-02-24 00:32:45,071 INFO L87 Difference]: Start difference. First operand 171 states and 192 transitions. Second operand 29 states. [2021-02-24 00:32:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:48,465 INFO L93 Difference]: Finished difference Result 194 states and 219 transitions. [2021-02-24 00:32:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-24 00:32:48,466 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 122 [2021-02-24 00:32:48,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:48,468 INFO L225 Difference]: With dead ends: 194 [2021-02-24 00:32:48,468 INFO L226 Difference]: Without dead ends: 192 [2021-02-24 00:32:48,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=496, Invalid=2584, Unknown=0, NotChecked=0, Total=3080 [2021-02-24 00:32:48,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-02-24 00:32:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 178. [2021-02-24 00:32:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2021-02-24 00:32:48,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2021-02-24 00:32:48,573 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 122 [2021-02-24 00:32:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:48,573 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2021-02-24 00:32:48,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-02-24 00:32:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2021-02-24 00:32:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-02-24 00:32:48,574 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:48,574 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:48,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-02-24 00:32:48,574 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:48,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:48,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1873162080, now seen corresponding path program 2 times [2021-02-24 00:32:48,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:48,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587632306] [2021-02-24 00:32:48,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:48,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:48,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:48,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:48,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:48,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:48,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:48,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:48,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:48,757 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size [2021-02-24 00:32:48,758 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.9 percent of original size 91 [2021-02-24 00:32:48,833 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:32:48,834 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:32:48,888 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:32:48,888 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:32:48,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:48,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:48,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:48,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:48,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:48,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:48,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:48,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:48,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:32:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:48,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:48,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-02-24 00:32:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:48,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:48,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-02-24 00:32:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:48,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:48,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 29 proven. 163 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-02-24 00:32:49,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587632306] [2021-02-24 00:32:49,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:49,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:32:49,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964968531] [2021-02-24 00:32:49,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:32:49,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:49,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:32:49,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:32:49,058 INFO L87 Difference]: Start difference. First operand 178 states and 199 transitions. Second operand 11 states. [2021-02-24 00:32:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:50,781 INFO L93 Difference]: Finished difference Result 245 states and 291 transitions. [2021-02-24 00:32:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:32:50,781 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 131 [2021-02-24 00:32:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:50,783 INFO L225 Difference]: With dead ends: 245 [2021-02-24 00:32:50,783 INFO L226 Difference]: Without dead ends: 190 [2021-02-24 00:32:50,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:32:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-02-24 00:32:50,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2021-02-24 00:32:50,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2021-02-24 00:32:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 208 transitions. [2021-02-24 00:32:50,976 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 208 transitions. Word has length 131 [2021-02-24 00:32:50,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:50,977 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 208 transitions. [2021-02-24 00:32:50,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:32:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 208 transitions. [2021-02-24 00:32:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-02-24 00:32:50,978 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:50,979 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:50,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-02-24 00:32:50,979 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:50,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:50,980 INFO L82 PathProgramCache]: Analyzing trace with hash -114027942, now seen corresponding path program 1 times [2021-02-24 00:32:50,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:50,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084379975] [2021-02-24 00:32:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:51,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:51,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:51,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:32:51,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:32:51,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:32:51,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:32:51,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:32:51,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:32:51,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:32:51,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:51,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:51,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:32:51,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:51,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:32:51,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:51,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 00:32:51,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:51,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:32:51,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:32:51,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:32:51,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:32:51,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:32:51,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:32:51,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:51,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:32:52,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:32:52,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:32:52,128 WARN L141 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size [2021-02-24 00:32:52,131 WARN L147 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size 221 [2021-02-24 00:32:52,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:52,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:32:52,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:52,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:52,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:52,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:52,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:52,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:52,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:52,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:52,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:52,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:52,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:32:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:52,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:52,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-02-24 00:32:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:52,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:52,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-02-24 00:32:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:52,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:52,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 14 proven. 189 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-02-24 00:32:52,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084379975] [2021-02-24 00:32:52,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:52,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-02-24 00:32:52,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456552265] [2021-02-24 00:32:52,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-24 00:32:52,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:52,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-24 00:32:52,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2021-02-24 00:32:52,561 INFO L87 Difference]: Start difference. First operand 186 states and 208 transitions. Second operand 31 states. [2021-02-24 00:32:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:56,572 INFO L93 Difference]: Finished difference Result 290 states and 355 transitions. [2021-02-24 00:32:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-24 00:32:56,572 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 133 [2021-02-24 00:32:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:56,574 INFO L225 Difference]: With dead ends: 290 [2021-02-24 00:32:56,574 INFO L226 Difference]: Without dead ends: 288 [2021-02-24 00:32:56,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=553, Invalid=2987, Unknown=0, NotChecked=0, Total=3540 [2021-02-24 00:32:56,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-02-24 00:32:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 244. [2021-02-24 00:32:56,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-02-24 00:32:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 290 transitions. [2021-02-24 00:32:56,753 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 290 transitions. Word has length 133 [2021-02-24 00:32:56,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:56,753 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 290 transitions. [2021-02-24 00:32:56,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-02-24 00:32:56,753 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 290 transitions. [2021-02-24 00:32:56,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-02-24 00:32:56,754 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:56,754 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:56,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-02-24 00:32:56,755 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:56,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:56,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1037710632, now seen corresponding path program 2 times [2021-02-24 00:32:56,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:56,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848027991] [2021-02-24 00:32:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:56,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:56,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:32:56,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:32:56,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:56,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:56,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:56,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:56,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:56,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:56,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:57,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:32:57,073 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:32:57,074 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 101 [2021-02-24 00:32:57,212 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:32:57,213 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 107 [2021-02-24 00:32:57,303 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size [2021-02-24 00:32:57,304 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.0 percent of original size 103 [2021-02-24 00:32:57,386 WARN L141 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size [2021-02-24 00:32:57,387 WARN L147 QuantifierPusher]: treesize reduction 125, result has 0.8 percent of original size 1 [2021-02-24 00:32:57,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:57,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:32:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:57,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:57,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:32:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:57,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:57,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:32:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:57,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:57,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:32:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:57,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:32:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:57,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:57,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:32:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:57,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-02-24 00:32:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:57,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:57,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-02-24 00:32:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:57,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:57,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 00:32:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:32:57,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:32:57,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:32:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 33 proven. 205 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-02-24 00:32:57,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848027991] [2021-02-24 00:32:57,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:32:57,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:32:57,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980159458] [2021-02-24 00:32:57,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:32:57,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:32:57,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:32:57,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:32:57,572 INFO L87 Difference]: Start difference. First operand 244 states and 290 transitions. Second operand 12 states. [2021-02-24 00:32:59,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:32:59,659 INFO L93 Difference]: Finished difference Result 311 states and 380 transitions. [2021-02-24 00:32:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:32:59,659 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 142 [2021-02-24 00:32:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:32:59,661 INFO L225 Difference]: With dead ends: 311 [2021-02-24 00:32:59,661 INFO L226 Difference]: Without dead ends: 194 [2021-02-24 00:32:59,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-02-24 00:32:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-02-24 00:32:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2021-02-24 00:32:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-02-24 00:32:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 213 transitions. [2021-02-24 00:32:59,841 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 213 transitions. Word has length 142 [2021-02-24 00:32:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:32:59,841 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 213 transitions. [2021-02-24 00:32:59,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:32:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 213 transitions. [2021-02-24 00:32:59,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-02-24 00:32:59,843 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:32:59,843 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 7, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:32:59,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-02-24 00:32:59,843 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:32:59,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:32:59,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1977280136, now seen corresponding path program 1 times [2021-02-24 00:32:59,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:32:59,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249494466] [2021-02-24 00:32:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:32:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:00,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:00,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:33:00,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:00,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:33:00,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:33:00,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:33:00,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:33:00,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:33:00,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:33:00,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:00,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:33:00,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:33:00,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:33:00,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:33:00,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:00,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 00:33:00,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:33:00,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:33:00,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:33:00,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:33:00,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:33:00,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:00,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:00,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:33:00,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:33:00,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:33:00,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:00,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:33:01,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:33:01,089 WARN L141 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size [2021-02-24 00:33:01,091 WARN L147 QuantifierPusher]: treesize reduction 4, result has 98.2 percent of original size 222 [2021-02-24 00:33:01,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:33:01,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:33:01,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:01,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:33:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:01,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:01,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:33:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:01,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:01,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:33:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:01,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:01,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:33:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:01,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:01,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:33:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:01,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:01,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:33:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:01,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:01,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-02-24 00:33:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:01,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-02-24 00:33:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:01,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 00:33:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:01,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:01,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 16 proven. 228 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-02-24 00:33:01,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249494466] [2021-02-24 00:33:01,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:33:01,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-02-24 00:33:01,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091924949] [2021-02-24 00:33:01,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-02-24 00:33:01,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:33:01,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-02-24 00:33:01,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2021-02-24 00:33:01,511 INFO L87 Difference]: Start difference. First operand 192 states and 213 transitions. Second operand 33 states. [2021-02-24 00:33:05,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:33:05,158 INFO L93 Difference]: Finished difference Result 215 states and 240 transitions. [2021-02-24 00:33:05,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-24 00:33:05,159 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 143 [2021-02-24 00:33:05,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:33:05,160 INFO L225 Difference]: With dead ends: 215 [2021-02-24 00:33:05,160 INFO L226 Difference]: Without dead ends: 213 [2021-02-24 00:33:05,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=616, Invalid=3416, Unknown=0, NotChecked=0, Total=4032 [2021-02-24 00:33:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-02-24 00:33:05,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 199. [2021-02-24 00:33:05,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-02-24 00:33:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 220 transitions. [2021-02-24 00:33:05,344 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 220 transitions. Word has length 143 [2021-02-24 00:33:05,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:33:05,344 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 220 transitions. [2021-02-24 00:33:05,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-02-24 00:33:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 220 transitions. [2021-02-24 00:33:05,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-02-24 00:33:05,345 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:33:05,345 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 8, 7, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:33:05,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-02-24 00:33:05,346 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:33:05,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:33:05,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1389638842, now seen corresponding path program 2 times [2021-02-24 00:33:05,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:33:05,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131423462] [2021-02-24 00:33:05,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:33:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:05,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:05,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:33:05,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:33:05,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:33:05,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:33:05,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:33:05,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:33:05,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:33:05,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:33:05,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:05,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:33:05,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:33:05,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:33:05,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:33:05,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:05,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:05,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 00:33:06,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:33:06,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:33:06,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:33:06,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 00:33:06,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:33:06,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 00:33:06,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:33:06,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:33:06,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:33:06,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 00:33:06,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:33:06,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:33:06,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:33:06,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:33:06,628 WARN L141 QuantifierPusher]: treesize reduction 36, result has 84.1 percent of original size [2021-02-24 00:33:06,629 WARN L147 QuantifierPusher]: treesize reduction 36, result has 84.1 percent of original size 190 [2021-02-24 00:33:06,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:33:06,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:33:06,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:06,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:33:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:06,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:33:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:06,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:06,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-24 00:33:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:06,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 00:33:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:06,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:06,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-24 00:33:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:06,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 00:33:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:06,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-02-24 00:33:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:06,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:06,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-02-24 00:33:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:06,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:06,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 00:33:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:06,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:06,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-24 00:33:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:33:06,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:33:06,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:33:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 18 proven. 264 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-02-24 00:33:07,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131423462] [2021-02-24 00:33:07,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:33:07,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-02-24 00:33:07,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644248622] [2021-02-24 00:33:07,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-02-24 00:33:07,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:33:07,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-02-24 00:33:07,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2021-02-24 00:33:07,033 INFO L87 Difference]: Start difference. First operand 199 states and 220 transitions. Second operand 34 states. [2021-02-24 00:33:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:33:10,680 INFO L93 Difference]: Finished difference Result 199 states and 220 transitions. [2021-02-24 00:33:10,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-24 00:33:10,681 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 152 [2021-02-24 00:33:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:33:10,682 INFO L225 Difference]: With dead ends: 199 [2021-02-24 00:33:10,682 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:33:10,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=633, Invalid=3399, Unknown=0, NotChecked=0, Total=4032 [2021-02-24 00:33:10,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:33:10,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:33:10,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:33:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:33:10,684 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2021-02-24 00:33:10,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:33:10,684 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:33:10,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-02-24 00:33:10,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:33:10,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:33:10,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-02-24 00:33:10,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:33:11,243 WARN L202 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 434 DAG size of output: 374 [2021-02-24 00:33:11,999 WARN L202 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 215 [2021-02-24 00:33:12,650 WARN L202 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 447 DAG size of output: 375 [2021-02-24 00:33:13,098 WARN L202 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 203 [2021-02-24 00:33:13,838 WARN L202 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 452 DAG size of output: 346 [2021-02-24 00:33:14,742 WARN L202 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 489 DAG size of output: 340 [2021-02-24 00:33:14,922 WARN L202 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 111 [2021-02-24 00:33:15,569 WARN L202 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 441 DAG size of output: 335 [2021-02-24 00:33:15,857 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 148 [2021-02-24 00:33:16,067 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 431 DAG size of output: 383 [2021-02-24 00:33:16,417 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 205 [2021-02-24 00:33:16,725 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 441 DAG size of output: 376 [2021-02-24 00:33:17,091 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 226 [2021-02-24 00:33:17,267 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 427 DAG size of output: 379 [2021-02-24 00:33:17,708 WARN L202 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 449 DAG size of output: 361 [2021-02-24 00:33:18,329 WARN L202 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 453 DAG size of output: 328 [2021-02-24 00:33:18,675 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 175 [2021-02-24 00:33:19,094 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 204 [2021-02-24 00:33:19,218 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2021-02-24 00:33:19,323 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 25 [2021-02-24 00:33:19,851 WARN L202 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 353 DAG size of output: 21 [2021-02-24 00:33:20,353 WARN L202 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 59 [2021-02-24 00:33:21,432 WARN L202 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 21 [2021-02-24 00:33:22,224 WARN L202 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 29 [2021-02-24 00:33:23,229 WARN L202 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 38 [2021-02-24 00:33:23,912 WARN L202 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 320 DAG size of output: 23 [2021-02-24 00:33:24,092 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 28 [2021-02-24 00:33:25,879 WARN L202 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 319 DAG size of output: 38 [2021-02-24 00:33:26,009 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-02-24 00:33:26,133 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-02-24 00:33:26,266 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-02-24 00:33:26,612 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 28 [2021-02-24 00:33:27,078 WARN L202 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 21 [2021-02-24 00:33:28,945 WARN L202 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 196 DAG size of output: 46 [2021-02-24 00:33:29,663 WARN L202 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 21 [2021-02-24 00:33:30,400 WARN L202 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 46 [2021-02-24 00:33:30,898 WARN L202 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 21 [2021-02-24 00:33:31,027 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-02-24 00:33:32,457 WARN L202 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 342 DAG size of output: 39 [2021-02-24 00:33:32,821 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 21 [2021-02-24 00:33:33,517 WARN L202 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 39 [2021-02-24 00:33:34,259 WARN L202 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 21 [2021-02-24 00:33:35,609 WARN L202 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 191 DAG size of output: 38 [2021-02-24 00:33:35,613 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 00:33:35,613 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 00:33:35,613 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 00:33:35,613 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 00:33:35,614 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 00:33:35,614 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:33:35,614 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 00:33:35,614 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:33:35,614 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-24 00:33:35,614 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-24 00:33:35,614 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 00:33:35,615 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 00:33:35,615 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 00:33:35,615 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-24 00:33:35,615 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:33:35,615 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-24 00:33:35,616 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:33:35,616 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:33:35,616 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2021-02-24 00:33:35,616 INFO L189 CegarLoopUtils]: For program point L6(line 6) no Hoare annotation was computed. [2021-02-24 00:33:35,616 INFO L189 CegarLoopUtils]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-02-24 00:33:35,617 INFO L189 CegarLoopUtils]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2021-02-24 00:33:35,617 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2021-02-24 00:33:35,617 INFO L185 CegarLoopUtils]: At program point L31(lines 31 40) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= (let ((.cse3 (div main_~l~0 4294967296))) (let ((.cse2 (* .cse3 (- 4294967296)))) (let ((.cse1 (div (+ main_~l~0 .cse2) 6))) (+ (* 4294967298 (div (+ main_~l~0 (* .cse1 (- 6)) .cse2) 4294967296)) (* 6 .cse1) (* 4294967296 .cse3) 1)))) main_~l~0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,617 INFO L185 CegarLoopUtils]: At program point L27(lines 27 40) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,617 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 16 45) the Hoare annotation is: true [2021-02-24 00:33:35,617 INFO L185 CegarLoopUtils]: At program point L23(lines 23 40) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,618 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~v5~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0) (= main_~v6~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,618 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~v5~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0) (= main_~v6~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,618 INFO L185 CegarLoopUtils]: At program point L19-2(line 19) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~v5~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0) (= main_~v6~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,618 INFO L185 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= main_~l~0 (+ (* 2 (div (+ main_~l~0 (- 1)) 2)) 1)) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,618 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (or (let ((.cse4 (div main_~l~0 4294967296))) (let ((.cse5 (* .cse4 (- 4294967296)))) (let ((.cse2 (div (+ main_~l~0 .cse5) 6))) (let ((.cse1 (div (+ main_~l~0 (* .cse2 (- 6)) .cse5) 4294967296)) (.cse3 (* 4294967296 .cse4)) (.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= (+ (* 4294967298 .cse1) (* 6 .cse2) .cse3 1) main_~l~0) (or (<= (+ (* 6148914694099828736 .cse1) (* 8589934592 .cse2) (* 6148914689804861440 .cse4) 1431655764) (* 1431655765 main_~l~0)) (<= (+ main_~n~0 .cse3 4274967299) (+ (* 4294967296 (div main_~n~0 4294967296)) main_~l~0))) (<= .cse0 main_~l~0)))))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,618 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= (let ((.cse3 (div main_~l~0 4294967296))) (let ((.cse2 (* .cse3 (- 4294967296)))) (let ((.cse1 (div (+ main_~l~0 .cse2) 6))) (+ (* 4294967296 (div (+ main_~l~0 (* .cse1 (- 6)) .cse2) 4294967296)) (* 6 .cse1) (* 4294967296 .cse3) 1)))) main_~l~0) (<= .cse0 main_~l~0))) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,619 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,619 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,619 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~v5~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0) (= main_~v6~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,619 INFO L185 CegarLoopUtils]: At program point L20-1(line 20) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~v5~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0) (= main_~v6~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,619 INFO L185 CegarLoopUtils]: At program point L37(lines 37 40) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= (let ((.cse3 (div main_~l~0 4294967296))) (let ((.cse2 (* .cse3 (- 4294967296)))) (let ((.cse1 (div (+ main_~l~0 .cse2) 6))) (+ (* 4294967296 (div (+ main_~l~0 (* .cse1 (- 6)) .cse2) 4294967296)) (* 6 .cse1) (* 4294967296 .cse3) 1)))) main_~l~0) (<= .cse0 main_~l~0))) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,619 INFO L185 CegarLoopUtils]: At program point L37-2(lines 23 40) the Hoare annotation is: (or (let ((.cse1 (+ main_~l~0 1)) (.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,620 INFO L185 CegarLoopUtils]: At program point L33(lines 33 40) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= (let ((.cse3 (div main_~l~0 4294967296))) (let ((.cse2 (* .cse3 (- 4294967296)))) (let ((.cse1 (div (+ main_~l~0 .cse2) 6))) (+ (* 4294967296 (div (+ main_~l~0 (* .cse1 (- 6)) .cse2) 4294967296)) (* 6 .cse1) (* 4294967296 .cse3) 1)))) main_~l~0) (<= .cse0 main_~l~0))) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,620 INFO L185 CegarLoopUtils]: At program point L29(lines 29 40) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,620 INFO L185 CegarLoopUtils]: At program point L25(lines 25 40) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,620 INFO L192 CegarLoopUtils]: At program point L21-2(lines 21 43) the Hoare annotation is: true [2021-02-24 00:33:35,620 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-24 00:33:35,620 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (or (= main_~i~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,620 INFO L185 CegarLoopUtils]: At program point L17-2(line 17) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~i~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,620 INFO L185 CegarLoopUtils]: At program point L17-3(line 17) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,620 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 16 45) the Hoare annotation is: true [2021-02-24 00:33:35,620 INFO L185 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,621 INFO L185 CegarLoopUtils]: At program point L42-1(lines 21 43) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,621 INFO L185 CegarLoopUtils]: At program point L38(line 38) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= (let ((.cse3 (div main_~l~0 4294967296))) (let ((.cse2 (* .cse3 (- 4294967296)))) (let ((.cse1 (div (+ main_~l~0 .cse2) 6))) (+ (* 4294967296 (div (+ main_~l~0 (* .cse1 (- 6)) .cse2) 4294967296)) (* 6 .cse1) (* 4294967296 .cse3) 1)))) main_~l~0) (<= main_~l~0 (+ (* 2 (div (+ main_~l~0 (- 2)) 2)) 2)) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,621 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= (let ((.cse3 (div main_~l~0 4294967296))) (let ((.cse2 (* .cse3 (- 4294967296)))) (let ((.cse1 (div (+ main_~l~0 .cse2) 6))) (+ (* 4294967296 (div (+ main_~l~0 (* .cse1 (- 6)) .cse2) 4294967296)) (* 6 .cse1) (* 4294967296 .cse3) 1)))) main_~l~0) (<= main_~l~0 (+ (* 2 (div (+ main_~l~0 (- 2)) 2)) 2)) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,621 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= main_~l~0 (+ (* 2 (div (+ main_~l~0 (- 2)) 2)) 2)) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,621 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 16 45) the Hoare annotation is: true [2021-02-24 00:33:35,621 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= main_~l~0 (+ (* 2 (div (+ main_~l~0 (- 2)) 2)) 2)) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,621 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~l~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,621 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,622 INFO L185 CegarLoopUtils]: At program point L18-2(line 18) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v2~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,622 INFO L185 CegarLoopUtils]: At program point L18-3(line 18) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (= main_~v3~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v2~0 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,622 INFO L185 CegarLoopUtils]: At program point L18-4(line 18) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,622 INFO L185 CegarLoopUtils]: At program point L18-5(line 18) the Hoare annotation is: (or (and (= main_~v3~0 0) (= main_~v5~0 0) (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~v1~0 0) (= main_~l~0 0) (= main_~v4~0 0) (= main_~v2~0 0)) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,622 INFO L185 CegarLoopUtils]: At program point L35(lines 35 40) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 main_~v5~0 main_~v6~0))) (and (<= main_~l~0 .cse0) (<= (let ((.cse3 (div main_~l~0 4294967296))) (let ((.cse2 (* .cse3 (- 4294967296)))) (let ((.cse1 (div (+ main_~l~0 .cse2) 6))) (+ (* 4294967298 (div (+ main_~l~0 (* .cse1 (- 6)) .cse2) 4294967296)) (* 6 .cse1) (* 4294967296 .cse3) 1)))) main_~l~0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,622 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2021-02-24 00:33:35,622 INFO L185 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001))) [2021-02-24 00:33:35,622 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 8 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001)) (not (= __VERIFIER_assert_~cond 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,623 INFO L185 CegarLoopUtils]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001)) (not (= __VERIFIER_assert_~cond 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,623 INFO L185 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001))) [2021-02-24 00:33:35,623 INFO L185 CegarLoopUtils]: At program point L9-2(lines 8 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001)) (not (= __VERIFIER_assert_~cond 0)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:33:35,623 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~SIZE~0 20000001))) [2021-02-24 00:33:35,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:33:35 BoogieIcfgContainer [2021-02-24 00:33:35,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:33:35,646 INFO L168 Benchmark]: Toolchain (without parser) took 161655.48 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 126.2 MB in the beginning and 363.3 MB in the end (delta: -237.1 MB). Peak memory consumption was 275.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:33:35,646 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:33:35,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.29 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:33:35,647 INFO L168 Benchmark]: Boogie Preprocessor took 40.47 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:33:35,647 INFO L168 Benchmark]: RCFGBuilder took 635.26 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 129.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:33:35,648 INFO L168 Benchmark]: TraceAbstraction took 160684.92 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 128.6 MB in the beginning and 363.3 MB in the end (delta: -234.7 MB). Peak memory consumption was 277.2 MB. Max. memory is 8.0 GB. [2021-02-24 00:33:35,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 273.29 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.47 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 635.26 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 129.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 160684.92 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 128.6 MB in the beginning and 363.3 MB in the end (delta: -234.7 MB). Peak memory consumption was 277.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((l <= i + j + k + v1 + v2 + v3 + v4 + v5 + v6 && i + j + k + v1 + v2 + v3 + v4 + v5 + v6 <= l) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 8]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: ((\old(cond) == 0 || !(SIZE <= 20000001)) || !(cond == 0)) || !(20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 135.6s, OverallIterations: 42, TraceHistogramMax: 10, AutomataDifference: 104.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 24.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1833 SDtfs, 8611 SDslu, 3785 SDs, 0 SdLazy, 17357 SolverSat, 1454 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 58.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1364 GetRequests, 449 SyntacticMatches, 29 SemanticMatches, 886 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7378 ImplicationChecksByTransitivity, 54.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 42 MinimizatonAttempts, 751 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 61 LocationsWithAnnotation, 684 PreInvPairs, 856 NumberOfFragments, 1716 HoareAnnotationTreeSize, 684 FomulaSimplifications, 12452304306378 FormulaSimplificationTreeSizeReduction, 8.3s HoareSimplificationTime, 61 FomulaSimplificationsInter, 2597082 FormulaSimplificationTreeSizeReductionInter, 16.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 24.4s InterpolantComputationTime, 3544 NumberOfCodeBlocks, 3544 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3502 ConstructedInterpolants, 0 QuantifiedInterpolants, 4034585 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 42 InterpolantComputations, 1 PerfectInterpolantSequences, 1643/4171 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...