/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:24:19,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:24:19,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:24:19,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:24:19,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:24:19,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:24:19,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:24:19,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:24:19,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:24:19,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:24:19,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:24:19,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:24:19,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:24:19,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:24:19,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:24:19,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:24:19,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:24:19,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:24:19,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:24:19,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:24:19,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:24:19,314 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:24:19,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:24:19,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:24:19,322 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:24:19,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:24:19,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:24:19,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:24:19,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:24:19,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:24:19,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:24:19,325 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:24:19,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:24:19,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:24:19,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:24:19,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:24:19,328 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:24:19,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:24:19,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:24:19,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:24:19,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:24:19,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:24:19,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:24:19,330 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:24:19,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:24:20,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:24:20,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:24:20,031 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:24:20,033 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:24:20,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2021-02-21 21:24:20,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcebc0d5c/c81ad98d2e614ac19ee27d0ed6e62fcf/FLAG757251cd7 [2021-02-21 21:24:21,017 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:24:21,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i [2021-02-21 21:24:21,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcebc0d5c/c81ad98d2e614ac19ee27d0ed6e62fcf/FLAG757251cd7 [2021-02-21 21:24:21,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcebc0d5c/c81ad98d2e614ac19ee27d0ed6e62fcf [2021-02-21 21:24:21,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:24:21,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:24:21,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:24:21,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:24:21,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:24:21,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:24:21" (1/1) ... [2021-02-21 21:24:21,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9d50ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:21, skipping insertion in model container [2021-02-21 21:24:21,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:24:21" (1/1) ... [2021-02-21 21:24:21,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:24:21,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:24:21,631 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i[893,906] [2021-02-21 21:24:21,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:24:21,665 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:24:21,684 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9.i[893,906] [2021-02-21 21:24:21,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:24:21,716 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:24:21,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:21 WrapperNode [2021-02-21 21:24:21,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:24:21,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:24:21,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:24:21,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:24:21,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:21" (1/1) ... [2021-02-21 21:24:21,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:21" (1/1) ... [2021-02-21 21:24:21,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:21" (1/1) ... [2021-02-21 21:24:21,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:21" (1/1) ... [2021-02-21 21:24:21,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:21" (1/1) ... [2021-02-21 21:24:21,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:21" (1/1) ... [2021-02-21 21:24:21,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:21" (1/1) ... [2021-02-21 21:24:21,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:24:21,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:24:21,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:24:21,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:24:21,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:21" (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 [2021-02-21 21:24:21,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:24:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:24:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:24:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:24:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:24:21,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:24:21,942 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:24:21,942 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:24:21,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:24:21,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:24:21,944 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:24:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:24:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:24:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:24:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:24:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:24:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:24:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:24:21,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:24:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:24:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:24:21,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:24:22,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:24:22,555 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 21:24:22,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:24:22 BoogieIcfgContainer [2021-02-21 21:24:22,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:24:22,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:24:22,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:24:22,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:24:22,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:24:21" (1/3) ... [2021-02-21 21:24:22,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383f88b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:24:22, skipping insertion in model container [2021-02-21 21:24:22,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:21" (2/3) ... [2021-02-21 21:24:22,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383f88b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:24:22, skipping insertion in model container [2021-02-21 21:24:22,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:24:22" (3/3) ... [2021-02-21 21:24:22,575 INFO L111 eAbstractionObserver]: Analyzing ICFG nested9.i [2021-02-21 21:24:22,587 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:24:22,595 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:24:22,648 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:24:22,728 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:24:22,728 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:24:22,729 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:24:22,729 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:24:22,729 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:24:22,732 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:24:22,732 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:24:22,733 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:24:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2021-02-21 21:24:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-21 21:24:22,789 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:22,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:22,791 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:22,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:22,802 INFO L82 PathProgramCache]: Analyzing trace with hash 674709827, now seen corresponding path program 1 times [2021-02-21 21:24:22,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:22,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382659408] [2021-02-21 21:24:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:22,931 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:23,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:23,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:23,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:23,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:24:23,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:23,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:23,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:23,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:23,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:23,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:23,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382659408] [2021-02-21 21:24:23,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:23,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 21:24:23,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669278231] [2021-02-21 21:24:23,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 21:24:23,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:23,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 21:24:23,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 21:24:23,513 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 8 states. [2021-02-21 21:24:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:24,309 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2021-02-21 21:24:24,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 21:24:24,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2021-02-21 21:24:24,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:24,326 INFO L225 Difference]: With dead ends: 120 [2021-02-21 21:24:24,327 INFO L226 Difference]: Without dead ends: 82 [2021-02-21 21:24:24,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-02-21 21:24:24,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-21 21:24:24,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 71. [2021-02-21 21:24:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-21 21:24:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2021-02-21 21:24:24,413 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 41 [2021-02-21 21:24:24,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:24,415 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2021-02-21 21:24:24,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 21:24:24,415 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2021-02-21 21:24:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-21 21:24:24,417 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:24,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:24,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:24:24,419 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:24,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:24,420 INFO L82 PathProgramCache]: Analyzing trace with hash 231113735, now seen corresponding path program 1 times [2021-02-21 21:24:24,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:24,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558552896] [2021-02-21 21:24:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:24,455 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:24,459 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:24,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:24,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:24,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:24,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:24,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:24,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:24,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:24,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:24,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:24,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:24,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:24,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:24,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:24,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558552896] [2021-02-21 21:24:24,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:24,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:24:24,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814618492] [2021-02-21 21:24:24,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:24:24,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:24,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:24:24,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:24:24,785 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 11 states. [2021-02-21 21:24:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:25,563 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2021-02-21 21:24:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 21:24:25,564 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2021-02-21 21:24:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:25,569 INFO L225 Difference]: With dead ends: 93 [2021-02-21 21:24:25,570 INFO L226 Difference]: Without dead ends: 91 [2021-02-21 21:24:25,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-02-21 21:24:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-21 21:24:25,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2021-02-21 21:24:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-21 21:24:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-02-21 21:24:25,599 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 47 [2021-02-21 21:24:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:25,600 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-02-21 21:24:25,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:24:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-02-21 21:24:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 21:24:25,602 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:25,603 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, 1] [2021-02-21 21:24:25,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:24:25,603 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:25,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash -848378054, now seen corresponding path program 1 times [2021-02-21 21:24:25,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:25,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547786890] [2021-02-21 21:24:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:25,613 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:25,615 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:25,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:25,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:25,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:25,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:25,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:25,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:25,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:25,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:25,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:25,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:25,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:25,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:25,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547786890] [2021-02-21 21:24:25,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:25,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:24:25,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116194695] [2021-02-21 21:24:25,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:24:25,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:25,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:24:25,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:24:25,746 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 6 states. [2021-02-21 21:24:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:26,088 INFO L93 Difference]: Finished difference Result 146 states and 168 transitions. [2021-02-21 21:24:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:24:26,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2021-02-21 21:24:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:26,092 INFO L225 Difference]: With dead ends: 146 [2021-02-21 21:24:26,092 INFO L226 Difference]: Without dead ends: 98 [2021-02-21 21:24:26,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:24:26,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-02-21 21:24:26,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2021-02-21 21:24:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-21 21:24:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-02-21 21:24:26,120 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 53 [2021-02-21 21:24:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:26,121 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-02-21 21:24:26,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:24:26,121 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-02-21 21:24:26,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 21:24:26,124 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:26,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:26,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:24:26,125 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:26,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:26,126 INFO L82 PathProgramCache]: Analyzing trace with hash -108597218, now seen corresponding path program 1 times [2021-02-21 21:24:26,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:26,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247991542] [2021-02-21 21:24:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:26,131 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:26,133 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:26,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:26,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:26,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:26,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:26,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:26,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:26,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:26,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:26,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:26,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-21 21:24:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:26,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:26,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:26,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247991542] [2021-02-21 21:24:26,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:26,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:24:26,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351882045] [2021-02-21 21:24:26,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:24:26,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:26,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:24:26,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:24:26,342 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 9 states. [2021-02-21 21:24:26,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:26,954 INFO L93 Difference]: Finished difference Result 138 states and 155 transitions. [2021-02-21 21:24:26,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 21:24:26,955 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2021-02-21 21:24:26,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:26,956 INFO L225 Difference]: With dead ends: 138 [2021-02-21 21:24:26,957 INFO L226 Difference]: Without dead ends: 87 [2021-02-21 21:24:26,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:24:26,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-21 21:24:26,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-02-21 21:24:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-21 21:24:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2021-02-21 21:24:26,984 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 62 [2021-02-21 21:24:26,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:26,984 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2021-02-21 21:24:26,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:24:26,985 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2021-02-21 21:24:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-21 21:24:26,987 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:26,987 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:26,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:24:26,988 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:26,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:26,989 INFO L82 PathProgramCache]: Analyzing trace with hash -338178086, now seen corresponding path program 2 times [2021-02-21 21:24:26,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:26,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78307510] [2021-02-21 21:24:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:26,996 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:26,999 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:27,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:27,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:27,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:27,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:27,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:27,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:27,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:27,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:27,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:27,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:27,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-21 21:24:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:27,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:27,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78307510] [2021-02-21 21:24:27,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:27,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 21:24:27,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180679716] [2021-02-21 21:24:27,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 21:24:27,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:27,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 21:24:27,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:24:27,182 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 9 states. [2021-02-21 21:24:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:27,652 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2021-02-21 21:24:27,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 21:24:27,653 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2021-02-21 21:24:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:27,655 INFO L225 Difference]: With dead ends: 112 [2021-02-21 21:24:27,655 INFO L226 Difference]: Without dead ends: 110 [2021-02-21 21:24:27,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-02-21 21:24:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-21 21:24:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 91. [2021-02-21 21:24:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-21 21:24:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-02-21 21:24:27,693 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 68 [2021-02-21 21:24:27,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:27,697 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-02-21 21:24:27,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 21:24:27,697 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-02-21 21:24:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-21 21:24:27,702 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:27,702 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:27,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:24:27,703 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:27,704 INFO L82 PathProgramCache]: Analyzing trace with hash -678200968, now seen corresponding path program 3 times [2021-02-21 21:24:27,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:27,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274158320] [2021-02-21 21:24:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:27,722 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:27,724 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:27,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:27,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:27,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:27,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:27,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:27,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:27,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:27,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:27,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:27,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:27,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:27,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:27,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-21 21:24:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:27,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:27,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:27,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-21 21:24:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:28,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:28,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:28,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274158320] [2021-02-21 21:24:28,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:28,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:24:28,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232507248] [2021-02-21 21:24:28,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:24:28,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:28,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:24:28,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:24:28,051 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand 11 states. [2021-02-21 21:24:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:28,769 INFO L93 Difference]: Finished difference Result 142 states and 158 transitions. [2021-02-21 21:24:28,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 21:24:28,770 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2021-02-21 21:24:28,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:28,774 INFO L225 Difference]: With dead ends: 142 [2021-02-21 21:24:28,775 INFO L226 Difference]: Without dead ends: 140 [2021-02-21 21:24:28,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-02-21 21:24:28,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-02-21 21:24:28,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 100. [2021-02-21 21:24:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-02-21 21:24:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2021-02-21 21:24:28,832 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 77 [2021-02-21 21:24:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:28,832 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2021-02-21 21:24:28,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:24:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2021-02-21 21:24:28,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-21 21:24:28,834 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:28,835 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2021-02-21 21:24:28,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:24:28,835 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:28,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:28,836 INFO L82 PathProgramCache]: Analyzing trace with hash 792314266, now seen corresponding path program 4 times [2021-02-21 21:24:28,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:28,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162158217] [2021-02-21 21:24:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:28,843 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:28,845 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:28,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:28,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:28,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:28,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:28,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:28,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:28,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:28,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:28,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:28,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:28,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:28,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:28,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:28,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:28,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:28,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:28,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:28,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:29,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:29,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:29,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:29,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:29,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:29,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:29,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:29,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:29,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:29,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-21 21:24:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:29,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:29,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:29,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-21 21:24:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:29,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:29,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:29,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-21 21:24:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:29,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:29,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:29,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162158217] [2021-02-21 21:24:29,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:29,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:24:29,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703276310] [2021-02-21 21:24:29,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:24:29,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:29,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:24:29,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:24:29,114 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand 13 states. [2021-02-21 21:24:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:29,889 INFO L93 Difference]: Finished difference Result 172 states and 194 transitions. [2021-02-21 21:24:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 21:24:29,889 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2021-02-21 21:24:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:29,892 INFO L225 Difference]: With dead ends: 172 [2021-02-21 21:24:29,892 INFO L226 Difference]: Without dead ends: 170 [2021-02-21 21:24:29,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2021-02-21 21:24:29,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-02-21 21:24:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 109. [2021-02-21 21:24:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-02-21 21:24:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2021-02-21 21:24:29,924 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 86 [2021-02-21 21:24:29,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:29,925 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2021-02-21 21:24:29,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:24:29,926 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2021-02-21 21:24:29,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-02-21 21:24:29,930 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:29,930 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2021-02-21 21:24:29,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 21:24:29,931 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:29,931 INFO L82 PathProgramCache]: Analyzing trace with hash 736460728, now seen corresponding path program 5 times [2021-02-21 21:24:29,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:29,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810478039] [2021-02-21 21:24:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:29,939 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:29,941 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:30,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:30,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:30,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:30,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:30,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:30,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:30,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:30,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:30,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:30,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:30,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:30,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:30,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:30,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:30,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:30,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:30,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:30,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:30,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-21 21:24:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:30,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:30,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-21 21:24:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:30,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:30,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-21 21:24:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:30,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-21 21:24:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:30,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:30,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:30,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810478039] [2021-02-21 21:24:30,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:30,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-21 21:24:30,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192034279] [2021-02-21 21:24:30,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-21 21:24:30,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:30,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-21 21:24:30,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-02-21 21:24:30,244 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand 17 states. [2021-02-21 21:24:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:32,180 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2021-02-21 21:24:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-21 21:24:32,181 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 95 [2021-02-21 21:24:32,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:32,183 INFO L225 Difference]: With dead ends: 159 [2021-02-21 21:24:32,183 INFO L226 Difference]: Without dead ends: 157 [2021-02-21 21:24:32,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=453, Invalid=1899, Unknown=0, NotChecked=0, Total=2352 [2021-02-21 21:24:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-02-21 21:24:32,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 130. [2021-02-21 21:24:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-02-21 21:24:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 146 transitions. [2021-02-21 21:24:32,220 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 146 transitions. Word has length 95 [2021-02-21 21:24:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:32,221 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 146 transitions. [2021-02-21 21:24:32,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-21 21:24:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 146 transitions. [2021-02-21 21:24:32,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-02-21 21:24:32,223 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:32,223 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2021-02-21 21:24:32,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 21:24:32,224 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:32,224 INFO L82 PathProgramCache]: Analyzing trace with hash -92657401, now seen corresponding path program 6 times [2021-02-21 21:24:32,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:32,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241368498] [2021-02-21 21:24:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:32,233 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:32,234 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:32,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:32,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:32,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:32,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-21 21:24:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-21 21:24:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-21 21:24:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 21:24:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-21 21:24:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-21 21:24:32,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241368498] [2021-02-21 21:24:32,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:32,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 21:24:32,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098674879] [2021-02-21 21:24:32,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 21:24:32,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:32,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 21:24:32,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:24:32,405 INFO L87 Difference]: Start difference. First operand 130 states and 146 transitions. Second operand 7 states. [2021-02-21 21:24:32,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:32,759 INFO L93 Difference]: Finished difference Result 210 states and 239 transitions. [2021-02-21 21:24:32,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 21:24:32,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2021-02-21 21:24:32,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:32,761 INFO L225 Difference]: With dead ends: 210 [2021-02-21 21:24:32,762 INFO L226 Difference]: Without dead ends: 132 [2021-02-21 21:24:32,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:24:32,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-02-21 21:24:32,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2021-02-21 21:24:32,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-02-21 21:24:32,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2021-02-21 21:24:32,793 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 110 [2021-02-21 21:24:32,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:32,794 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2021-02-21 21:24:32,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 21:24:32,794 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2021-02-21 21:24:32,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-02-21 21:24:32,795 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:32,796 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 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] [2021-02-21 21:24:32,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 21:24:32,796 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:32,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:32,797 INFO L82 PathProgramCache]: Analyzing trace with hash -552364528, now seen corresponding path program 7 times [2021-02-21 21:24:32,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:32,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432568890] [2021-02-21 21:24:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:32,822 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:32,823 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:24:32,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:32,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:32,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:24:32,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:32,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:32,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-21 21:24:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-21 21:24:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-21 21:24:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:32,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:32,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:32,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 21:24:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:33,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:33,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-02-21 21:24:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:33,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:33,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-02-21 21:24:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:33,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:33,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-02-21 21:24:33,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432568890] [2021-02-21 21:24:33,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:33,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 21:24:33,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715538159] [2021-02-21 21:24:33,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 21:24:33,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:33,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 21:24:33,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-21 21:24:33,057 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand 8 states. [2021-02-21 21:24:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:33,389 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2021-02-21 21:24:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 21:24:33,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2021-02-21 21:24:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:33,390 INFO L225 Difference]: With dead ends: 130 [2021-02-21 21:24:33,390 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:24:33,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:24:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:24:33,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:24:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:24:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:24:33,393 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2021-02-21 21:24:33,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:33,393 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:24:33,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 21:24:33,394 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:24:33,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:24:33,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 21:24:33,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:24:33,809 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 56 [2021-02-21 21:24:33,985 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2021-02-21 21:24:34,747 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 12 [2021-02-21 21:24:35,032 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:24:35,032 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:24:35,032 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:24:35,032 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:24:35,032 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:24:35,033 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:35,033 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:35,033 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:24:35,033 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:24:35,033 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:24:35,034 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:24:35,034 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__BLAST_NONDET~0 |old(~__BLAST_NONDET~0)|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-21 21:24:35,034 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:24:35,034 INFO L192 CegarLoopUtils]: At program point L12-4(line 12) the Hoare annotation is: true [2021-02-21 21:24:35,034 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:24:35,034 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:24:35,034 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:35,035 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:24:35,035 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:24:35,035 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-21 21:24:35,035 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-21 21:24:35,035 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:35,035 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:35,035 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:35,036 INFO L185 CegarLoopUtils]: At program point L35-3(lines 35 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,036 INFO L192 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: true [2021-02-21 21:24:35,036 INFO L185 CegarLoopUtils]: At program point L35-4(line 35) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,036 INFO L192 CegarLoopUtils]: At program point L31-1(line 31) the Hoare annotation is: true [2021-02-21 21:24:35,036 INFO L185 CegarLoopUtils]: At program point L35-5(line 35) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,036 INFO L185 CegarLoopUtils]: At program point L35-6(lines 35 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,037 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-21 21:24:35,037 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-21 21:24:35,037 INFO L192 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: true [2021-02-21 21:24:35,037 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 25 40) the Hoare annotation is: true [2021-02-21 21:24:35,037 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,037 INFO L185 CegarLoopUtils]: At program point L36-3(line 36) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~k~0 1) main_~j~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,037 INFO L192 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: true [2021-02-21 21:24:35,038 INFO L185 CegarLoopUtils]: At program point L36-4(line 36) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,038 INFO L192 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: true [2021-02-21 21:24:35,038 INFO L185 CegarLoopUtils]: At program point L36-5(lines 36 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,038 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-21 21:24:35,038 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-21 21:24:35,038 INFO L192 CegarLoopUtils]: At program point L28-2(line 28) the Hoare annotation is: true [2021-02-21 21:24:35,039 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~k~0 1) main_~j~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,039 INFO L185 CegarLoopUtils]: At program point L37-1(lines 36 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~k~0 1) main_~j~0) (<= (+ main_~j~0 1) (* 3 main_~i~0)) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,039 INFO L192 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-02-21 21:24:35,039 INFO L192 CegarLoopUtils]: At program point L33-1(line 33) the Hoare annotation is: true [2021-02-21 21:24:35,039 INFO L192 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-02-21 21:24:35,039 INFO L192 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: true [2021-02-21 21:24:35,039 INFO L192 CegarLoopUtils]: At program point L29-2(line 29) the Hoare annotation is: true [2021-02-21 21:24:35,040 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 25 40) the Hoare annotation is: true [2021-02-21 21:24:35,040 INFO L192 CegarLoopUtils]: At program point L38(lines 25 40) the Hoare annotation is: true [2021-02-21 21:24:35,040 INFO L185 CegarLoopUtils]: At program point L34-2(lines 34 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (* 3 main_~i~0) main_~j~0) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,040 INFO L185 CegarLoopUtils]: At program point L34-3(line 34) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (* 3 main_~i~0) main_~j~0) (<= (+ main_~i~0 1) main_~n~0) (<= (+ |main_#t~post6| 2) (* 2 main_~n~0))) [2021-02-21 21:24:35,040 INFO L192 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: true [2021-02-21 21:24:35,041 INFO L185 CegarLoopUtils]: At program point L34-4(line 34) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) .cse0) (<= (+ |main_#t~post6| 2) .cse0))) [2021-02-21 21:24:35,041 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 25 40) the Hoare annotation is: true [2021-02-21 21:24:35,041 INFO L192 CegarLoopUtils]: At program point L30-1(line 30) the Hoare annotation is: true [2021-02-21 21:24:35,041 INFO L185 CegarLoopUtils]: At program point L34-5(lines 34 37) the Hoare annotation is: (or (= main_~i~0 0) (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) (* 2 main_~n~0)))) [2021-02-21 21:24:35,041 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-21 21:24:35,041 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-21 21:24:35,042 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-21 21:24:35,042 INFO L192 CegarLoopUtils]: At program point L26-3(line 26) the Hoare annotation is: true [2021-02-21 21:24:35,042 INFO L192 CegarLoopUtils]: At program point L26-4(line 26) the Hoare annotation is: true [2021-02-21 21:24:35,042 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~i~0 1) main_~n~0)) [2021-02-21 21:24:35,042 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:24:35,043 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-21 21:24:35,043 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:24:35,043 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:24:35,043 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:24:35,043 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:24:35,044 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:24:35,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:24:35 BoogieIcfgContainer [2021-02-21 21:24:35,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:24:35,074 INFO L168 Benchmark]: Toolchain (without parser) took 13701.29 ms. Allocated memory was 154.1 MB in the beginning and 324.0 MB in the end (delta: 169.9 MB). Free memory was 130.8 MB in the beginning and 229.9 MB in the end (delta: -99.1 MB). Peak memory consumption was 153.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:35,075 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 154.1 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:24:35,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.33 ms. Allocated memory is still 154.1 MB. Free memory was 129.7 MB in the beginning and 119.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:35,075 INFO L168 Benchmark]: Boogie Preprocessor took 91.93 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:35,076 INFO L168 Benchmark]: RCFGBuilder took 746.20 ms. Allocated memory is still 154.1 MB. Free memory was 118.1 MB in the beginning and 131.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:35,076 INFO L168 Benchmark]: TraceAbstraction took 12510.85 ms. Allocated memory was 154.1 MB in the beginning and 324.0 MB in the end (delta: 169.9 MB). Free memory was 131.3 MB in the beginning and 229.9 MB in the end (delta: -98.6 MB). Peak memory consumption was 155.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:35,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 154.1 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.33 ms. Allocated memory is still 154.1 MB. Free memory was 129.7 MB in the beginning and 119.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 91.93 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 746.20 ms. Allocated memory is still 154.1 MB. Free memory was 118.1 MB in the beginning and 131.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12510.85 ms. Allocated memory was 154.1 MB in the beginning and 324.0 MB in the end (delta: 169.9 MB). Free memory was 131.3 MB in the beginning and 229.9 MB in the end (delta: -98.6 MB). Peak memory consumption was 155.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 <= n && i + 1 <= n - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: i == 0 || (1 <= n && i + 1 <= 2 * n) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (1 <= n && j + 1 <= 3 * i) && i + 1 <= n - ProcedureContractResult [Line: 25]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.6s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 463 SDtfs, 1092 SDslu, 813 SDs, 0 SdLazy, 2994 SolverSat, 186 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 183 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 62 LocationsWithAnnotation, 237 PreInvPairs, 335 NumberOfFragments, 339 HoareAnnotationTreeSize, 237 FomulaSimplifications, 1347836 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 62 FomulaSimplificationsInter, 7879 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...