/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-lit/gsv2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:59:27,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:59:27,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:59:27,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:59:27,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:59:27,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:59:27,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:59:27,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:59:27,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:59:27,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:59:27,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:59:27,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:59:27,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:59:27,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:59:27,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:59:27,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:59:27,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:59:27,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:59:27,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:59:27,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:59:27,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:59:27,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:59:27,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:59:27,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:59:27,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:59:27,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:59:27,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:59:27,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:59:27,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:59:27,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:59:27,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:59:27,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:59:27,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:59:27,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:59:27,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:59:27,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:59:27,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:59:27,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:59:27,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:59:27,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:59:27,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:59:27,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:59:27,580 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:59:27,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:59:27,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:59:27,582 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:59:27,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:59:27,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:59:27,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:59:27,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:59:27,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:59:27,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:59:27,584 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:59:27,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:59:27,584 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:59:27,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:59:27,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:59:27,585 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:59:27,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:59:27,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:59:27,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:59:27,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:59:27,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:59:27,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:59:27,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:59:27,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:59:27,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:59:28,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:59:28,003 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:59:28,003 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:59:28,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2021-02-23 18:59:28,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8f693fd/52ca3541c89340c38c7085d9103fb159/FLAG83c6c89bb [2021-02-23 18:59:28,791 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:59:28,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i [2021-02-23 18:59:28,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8f693fd/52ca3541c89340c38c7085d9103fb159/FLAG83c6c89bb [2021-02-23 18:59:29,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8f693fd/52ca3541c89340c38c7085d9103fb159 [2021-02-23 18:59:29,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:59:29,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:59:29,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:59:29,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:59:29,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:59:29,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:59:29" (1/1) ... [2021-02-23 18:59:29,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b80d07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:59:29, skipping insertion in model container [2021-02-23 18:59:29,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:59:29" (1/1) ... [2021-02-23 18:59:29,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:59:29,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:59:29,407 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-lit/gsv2008.i[895,908] [2021-02-23 18:59:29,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:59:29,428 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:59:29,441 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-lit/gsv2008.i[895,908] [2021-02-23 18:59:29,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:59:29,460 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:59:29,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:59:29 WrapperNode [2021-02-23 18:59:29,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:59:29,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:59:29,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:59:29,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:59:29,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:59:29" (1/1) ... [2021-02-23 18:59:29,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:59:29" (1/1) ... [2021-02-23 18:59:29,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:59:29" (1/1) ... [2021-02-23 18:59:29,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:59:29" (1/1) ... [2021-02-23 18:59:29,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:59:29" (1/1) ... [2021-02-23 18:59:29,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:59:29" (1/1) ... [2021-02-23 18:59:29,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:59:29" (1/1) ... [2021-02-23 18:59:29,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:59:29,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:59:29,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:59:29,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:59:29,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:59:29" (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 [2021-02-23 18:59:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:59:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:59:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:59:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:59:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:59:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:59:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:59:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:59:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:59:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:59:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:59:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:59:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:59:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:59:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:59:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:59:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:59:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:59:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:59:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:59:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:59:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:59:29,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:59:29,904 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 18:59:29,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:59:29 BoogieIcfgContainer [2021-02-23 18:59:29,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:59:29,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:59:29,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:59:29,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:59:29,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:59:29" (1/3) ... [2021-02-23 18:59:29,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9ae8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:59:29, skipping insertion in model container [2021-02-23 18:59:29,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:59:29" (2/3) ... [2021-02-23 18:59:29,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9ae8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:59:29, skipping insertion in model container [2021-02-23 18:59:29,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:59:29" (3/3) ... [2021-02-23 18:59:29,926 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2021-02-23 18:59:29,945 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:59:29,957 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:59:30,016 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:59:30,089 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:59:30,089 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:59:30,089 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:59:30,089 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:59:30,089 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:59:30,089 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:59:30,090 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:59:30,090 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:59:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-23 18:59:30,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-23 18:59:30,152 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:59:30,153 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] [2021-02-23 18:59:30,154 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:59:30,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:59:30,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1643275085, now seen corresponding path program 1 times [2021-02-23 18:59:30,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:59:30,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307910172] [2021-02-23 18:59:30,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:59:30,294 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:59:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:30,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:30,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:30,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:30,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:30,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:30,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:59:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:30,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:30,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:59:30,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307910172] [2021-02-23 18:59:30,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:59:30,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:59:30,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957111998] [2021-02-23 18:59:30,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:59:30,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:59:30,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:59:30,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:59:30,561 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2021-02-23 18:59:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:59:30,748 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-02-23 18:59:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:59:30,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2021-02-23 18:59:30,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:59:30,762 INFO L225 Difference]: With dead ends: 53 [2021-02-23 18:59:30,763 INFO L226 Difference]: Without dead ends: 30 [2021-02-23 18:59:30,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:59:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-23 18:59:30,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-02-23 18:59:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-23 18:59:30,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-02-23 18:59:30,851 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 23 [2021-02-23 18:59:30,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:59:30,852 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-02-23 18:59:30,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:59:30,853 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-02-23 18:59:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 18:59:30,855 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:59:30,855 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] [2021-02-23 18:59:30,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:59:30,856 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:59:30,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:59:30,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1973914334, now seen corresponding path program 1 times [2021-02-23 18:59:30,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:59:30,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474293284] [2021-02-23 18:59:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:59:30,905 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:59:30,915 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:59:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:31,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:31,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:31,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:31,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:31,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:31,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:59:31,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:31,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:31,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:31,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:59:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:31,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:59:31,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474293284] [2021-02-23 18:59:31,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:59:31,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:59:31,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673050909] [2021-02-23 18:59:31,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:59:31,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:59:31,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:59:31,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:59:31,228 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 10 states. [2021-02-23 18:59:31,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:59:31,707 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-02-23 18:59:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 18:59:31,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2021-02-23 18:59:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:59:31,709 INFO L225 Difference]: With dead ends: 40 [2021-02-23 18:59:31,710 INFO L226 Difference]: Without dead ends: 35 [2021-02-23 18:59:31,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-02-23 18:59:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-23 18:59:31,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-02-23 18:59:31,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-23 18:59:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-02-23 18:59:31,725 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 28 [2021-02-23 18:59:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:59:31,726 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-02-23 18:59:31,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:59:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-02-23 18:59:31,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 18:59:31,728 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:59:31,728 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 18:59:31,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:59:31,729 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:59:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:59:31,730 INFO L82 PathProgramCache]: Analyzing trace with hash -276728339, now seen corresponding path program 2 times [2021-02-23 18:59:31,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:59:31,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470559252] [2021-02-23 18:59:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:59:31,737 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:59:31,740 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:59:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:31,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:31,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:31,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:31,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:31,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:31,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:31,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:31,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:31,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:59:31,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:31,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:31,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:31,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:59:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:31,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:31,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:59:31,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470559252] [2021-02-23 18:59:31,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:59:31,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 18:59:31,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613195259] [2021-02-23 18:59:31,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 18:59:31,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:59:31,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 18:59:31,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-23 18:59:31,969 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 13 states. [2021-02-23 18:59:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:59:32,476 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-02-23 18:59:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 18:59:32,477 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2021-02-23 18:59:32,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:59:32,479 INFO L225 Difference]: With dead ends: 45 [2021-02-23 18:59:32,479 INFO L226 Difference]: Without dead ends: 40 [2021-02-23 18:59:32,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-02-23 18:59:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-23 18:59:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-02-23 18:59:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-23 18:59:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-02-23 18:59:32,491 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 33 [2021-02-23 18:59:32,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:59:32,492 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-02-23 18:59:32,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 18:59:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-02-23 18:59:32,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:59:32,493 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:59:32,494 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:59:32,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:59:32,494 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:59:32,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:59:32,495 INFO L82 PathProgramCache]: Analyzing trace with hash -776266690, now seen corresponding path program 3 times [2021-02-23 18:59:32,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:59:32,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786773430] [2021-02-23 18:59:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:59:32,500 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:59:32,502 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:59:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:32,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:32,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:32,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:32,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:32,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:32,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:32,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:32,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:32,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:32,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:32,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:32,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:59:32,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:32,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:32,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:59:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:32,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:32,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:59:32,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786773430] [2021-02-23 18:59:32,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:59:32,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 18:59:32,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688767900] [2021-02-23 18:59:32,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 18:59:32,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:59:32,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 18:59:32,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-02-23 18:59:32,743 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 16 states. [2021-02-23 18:59:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:59:33,450 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-02-23 18:59:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 18:59:33,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2021-02-23 18:59:33,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:59:33,452 INFO L225 Difference]: With dead ends: 50 [2021-02-23 18:59:33,453 INFO L226 Difference]: Without dead ends: 45 [2021-02-23 18:59:33,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2021-02-23 18:59:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-02-23 18:59:33,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-02-23 18:59:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-23 18:59:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-02-23 18:59:33,466 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 38 [2021-02-23 18:59:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:59:33,467 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-02-23 18:59:33,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 18:59:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-02-23 18:59:33,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-23 18:59:33,468 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:59:33,469 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:59:33,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:59:33,469 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:59:33,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:59:33,470 INFO L82 PathProgramCache]: Analyzing trace with hash 970047629, now seen corresponding path program 4 times [2021-02-23 18:59:33,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:59:33,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654607877] [2021-02-23 18:59:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:59:33,476 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:59:33,477 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:59:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:33,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:33,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:33,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:33,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:33,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:33,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:33,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:33,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:33,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:33,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:33,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:33,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:33,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:33,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:33,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:59:33,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:33,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:33,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:33,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:59:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:33,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:33,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:59:33,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654607877] [2021-02-23 18:59:33,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:59:33,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 18:59:33,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778687332] [2021-02-23 18:59:33,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 18:59:33,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:59:33,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 18:59:33,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-02-23 18:59:33,755 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 19 states. [2021-02-23 18:59:34,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:59:34,640 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-02-23 18:59:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 18:59:34,641 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 43 [2021-02-23 18:59:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:59:34,643 INFO L225 Difference]: With dead ends: 55 [2021-02-23 18:59:34,643 INFO L226 Difference]: Without dead ends: 50 [2021-02-23 18:59:34,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=1321, Unknown=0, NotChecked=0, Total=1482 [2021-02-23 18:59:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-23 18:59:34,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-02-23 18:59:34,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-23 18:59:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-02-23 18:59:34,661 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 43 [2021-02-23 18:59:34,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:59:34,662 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-02-23 18:59:34,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 18:59:34,662 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-02-23 18:59:34,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-23 18:59:34,664 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:59:34,664 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:59:34,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:59:34,665 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:59:34,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:59:34,665 INFO L82 PathProgramCache]: Analyzing trace with hash -787450466, now seen corresponding path program 5 times [2021-02-23 18:59:34,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:59:34,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879467334] [2021-02-23 18:59:34,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:59:34,671 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:59:34,673 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:59:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:34,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:34,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:34,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:34,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:34,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:34,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:34,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:59:34,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:34,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:34,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:34,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:35,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:59:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:35,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:35,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:59:35,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879467334] [2021-02-23 18:59:35,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:59:35,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-23 18:59:35,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638927468] [2021-02-23 18:59:35,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 18:59:35,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:59:35,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 18:59:35,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2021-02-23 18:59:35,024 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 22 states. [2021-02-23 18:59:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:59:36,151 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-02-23 18:59:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-23 18:59:36,152 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 48 [2021-02-23 18:59:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:59:36,153 INFO L225 Difference]: With dead ends: 60 [2021-02-23 18:59:36,153 INFO L226 Difference]: Without dead ends: 55 [2021-02-23 18:59:36,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=1877, Unknown=0, NotChecked=0, Total=2070 [2021-02-23 18:59:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-02-23 18:59:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-02-23 18:59:36,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-23 18:59:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-02-23 18:59:36,170 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 48 [2021-02-23 18:59:36,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:59:36,170 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-02-23 18:59:36,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 18:59:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-02-23 18:59:36,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 18:59:36,172 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:59:36,172 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:59:36,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:59:36,173 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:59:36,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:59:36,173 INFO L82 PathProgramCache]: Analyzing trace with hash 180175661, now seen corresponding path program 6 times [2021-02-23 18:59:36,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:59:36,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512369438] [2021-02-23 18:59:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:59:36,179 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:59:36,180 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:59:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:36,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:36,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:36,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:36,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:36,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:36,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:36,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:59:36,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:36,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:36,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:36,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:59:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:36,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:36,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:59:36,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512369438] [2021-02-23 18:59:36,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:59:36,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-02-23 18:59:36,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598900637] [2021-02-23 18:59:36,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 18:59:36,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:59:36,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 18:59:36,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2021-02-23 18:59:36,675 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 25 states. [2021-02-23 18:59:38,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:59:38,032 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2021-02-23 18:59:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-23 18:59:38,033 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 53 [2021-02-23 18:59:38,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:59:38,035 INFO L225 Difference]: With dead ends: 65 [2021-02-23 18:59:38,035 INFO L226 Difference]: Without dead ends: 60 [2021-02-23 18:59:38,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=234, Invalid=2628, Unknown=0, NotChecked=0, Total=2862 [2021-02-23 18:59:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-02-23 18:59:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2021-02-23 18:59:38,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-02-23 18:59:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-02-23 18:59:38,054 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 53 [2021-02-23 18:59:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:59:38,055 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-02-23 18:59:38,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 18:59:38,055 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-02-23 18:59:38,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 18:59:38,056 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:59:38,057 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:59:38,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 18:59:38,057 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:59:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:59:38,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1039296770, now seen corresponding path program 7 times [2021-02-23 18:59:38,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:59:38,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956134718] [2021-02-23 18:59:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:59:38,064 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:59:38,065 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:59:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:38,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:38,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:38,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:38,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:38,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:38,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:38,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:59:38,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:38,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:38,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:38,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:59:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:38,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:38,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:59:38,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956134718] [2021-02-23 18:59:38,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:59:38,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-02-23 18:59:38,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015821193] [2021-02-23 18:59:38,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-23 18:59:38,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:59:38,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-23 18:59:38,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=696, Unknown=0, NotChecked=0, Total=756 [2021-02-23 18:59:38,601 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 28 states. [2021-02-23 18:59:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:59:40,253 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-02-23 18:59:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-23 18:59:40,254 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 58 [2021-02-23 18:59:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:59:40,256 INFO L225 Difference]: With dead ends: 70 [2021-02-23 18:59:40,256 INFO L226 Difference]: Without dead ends: 65 [2021-02-23 18:59:40,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=275, Invalid=3507, Unknown=0, NotChecked=0, Total=3782 [2021-02-23 18:59:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-23 18:59:40,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-02-23 18:59:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-23 18:59:40,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-02-23 18:59:40,274 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 58 [2021-02-23 18:59:40,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:59:40,274 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-02-23 18:59:40,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-23 18:59:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-02-23 18:59:40,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-23 18:59:40,276 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:59:40,276 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:59:40,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 18:59:40,276 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:59:40,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:59:40,277 INFO L82 PathProgramCache]: Analyzing trace with hash 597556685, now seen corresponding path program 8 times [2021-02-23 18:59:40,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:59:40,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773812098] [2021-02-23 18:59:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:59:40,283 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:59:40,284 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:59:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:40,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:40,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:40,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:40,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:40,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:40,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:40,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:59:40,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:40,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:40,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:40,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:59:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:40,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:40,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:59:40,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773812098] [2021-02-23 18:59:40,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:59:40,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-02-23 18:59:40,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420366523] [2021-02-23 18:59:40,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-23 18:59:40,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:59:40,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-23 18:59:40,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=863, Unknown=0, NotChecked=0, Total=930 [2021-02-23 18:59:40,861 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 31 states. [2021-02-23 18:59:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:59:42,945 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-02-23 18:59:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-02-23 18:59:42,946 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 63 [2021-02-23 18:59:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:59:42,947 INFO L225 Difference]: With dead ends: 75 [2021-02-23 18:59:42,947 INFO L226 Difference]: Without dead ends: 70 [2021-02-23 18:59:42,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=318, Invalid=4512, Unknown=0, NotChecked=0, Total=4830 [2021-02-23 18:59:42,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-23 18:59:42,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2021-02-23 18:59:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-02-23 18:59:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2021-02-23 18:59:42,965 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 63 [2021-02-23 18:59:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:59:42,966 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2021-02-23 18:59:42,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-02-23 18:59:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2021-02-23 18:59:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-23 18:59:42,967 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:59:42,967 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:59:42,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 18:59:42,968 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:59:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:59:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1416069026, now seen corresponding path program 9 times [2021-02-23 18:59:42,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:59:42,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323600109] [2021-02-23 18:59:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:59:42,973 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:59:42,975 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:59:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:43,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:43,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:43,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:43,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:43,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:43,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:43,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:59:43,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:43,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:43,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:43,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:59:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:43,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:43,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:59:43,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323600109] [2021-02-23 18:59:43,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:59:43,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-02-23 18:59:43,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439684901] [2021-02-23 18:59:43,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-02-23 18:59:43,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:59:43,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-02-23 18:59:43,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1048, Unknown=0, NotChecked=0, Total=1122 [2021-02-23 18:59:43,659 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 34 states. [2021-02-23 18:59:46,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:59:46,074 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-02-23 18:59:46,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-02-23 18:59:46,075 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 68 [2021-02-23 18:59:46,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:59:46,076 INFO L225 Difference]: With dead ends: 80 [2021-02-23 18:59:46,076 INFO L226 Difference]: Without dead ends: 75 [2021-02-23 18:59:46,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=363, Invalid=5643, Unknown=0, NotChecked=0, Total=6006 [2021-02-23 18:59:46,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-23 18:59:46,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-02-23 18:59:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-23 18:59:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-02-23 18:59:46,092 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 68 [2021-02-23 18:59:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:59:46,092 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-02-23 18:59:46,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-02-23 18:59:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-02-23 18:59:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-02-23 18:59:46,094 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:59:46,094 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:59:46,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 18:59:46,095 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:59:46,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:59:46,095 INFO L82 PathProgramCache]: Analyzing trace with hash -582094739, now seen corresponding path program 10 times [2021-02-23 18:59:46,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:59:46,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157608915] [2021-02-23 18:59:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:59:46,100 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:59:46,101 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:59:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:46,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:46,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:46,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:46,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:46,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:59:46,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:59:46,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:59:46,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:46,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:59:46,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:46,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:59:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:59:46,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:59:46,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:59:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:59:46,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157608915] [2021-02-23 18:59:46,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:59:46,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-02-23 18:59:46,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534094702] [2021-02-23 18:59:46,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-02-23 18:59:46,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:59:46,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-02-23 18:59:46,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1251, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 18:59:46,896 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 37 states. [2021-02-23 18:59:49,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:59:49,769 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-02-23 18:59:49,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-02-23 18:59:49,769 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 73 [2021-02-23 18:59:49,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:59:49,771 INFO L225 Difference]: With dead ends: 75 [2021-02-23 18:59:49,771 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 18:59:49,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=413, Invalid=6897, Unknown=0, NotChecked=0, Total=7310 [2021-02-23 18:59:49,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 18:59:49,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 18:59:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 18:59:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 18:59:49,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2021-02-23 18:59:49,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:59:49,776 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 18:59:49,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-02-23 18:59:49,776 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 18:59:49,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 18:59:49,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 18:59:49,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 18:59:50,495 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2021-02-23 18:59:50,636 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 49 [2021-02-23 18:59:50,890 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 40 [2021-02-23 18:59:50,897 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 18:59:50,897 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 18:59:50,897 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 18:59:50,897 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-23 18:59:50,897 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-23 18:59:50,897 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:59:50,898 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 18:59:50,898 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-23 18:59:50,898 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-23 18:59:50,898 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-23 18:59:50,898 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-23 18:59:50,898 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#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)|)) [2021-02-23 18:59:50,898 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-23 18:59:50,898 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:59:50,899 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:59:50,899 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:59:50,899 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 18:59:50,899 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 18:59:50,899 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-23 18:59:50,899 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-23 18:59:50,899 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:59:50,899 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:59:50,899 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:59:50,900 INFO L192 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-02-23 18:59:50,900 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (or (<= (+ main_~x~0 95) (* 10 main_~y~0)) (<= (+ main_~x~0 50) main_~y~0) (<= (+ main_~x~0 56) (* 4 main_~y~0)) (<= (+ main_~x~0 65) (* 6 main_~y~0)) (<= (+ main_~x~0 53) (* 3 main_~y~0)) (<= (+ main_~x~0 78) (* 8 main_~y~0))) [2021-02-23 18:59:50,900 INFO L185 CegarLoopUtils]: At program point L31-1(line 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~x~0 53))) (and (<= .cse0 (* 3 |main_#t~post4|)) (<= .cse0 (* 3 main_~y~0)))) (let ((.cse1 (+ main_~x~0 95))) (and (<= .cse1 (* 10 main_~y~0)) (<= .cse1 (* 10 |main_#t~post4|)))) (let ((.cse2 (+ main_~x~0 71))) (and (<= .cse2 (* 7 main_~y~0)) (<= .cse2 (* 7 |main_#t~post4|)))) (let ((.cse3 (+ main_~x~0 50))) (and (<= .cse3 main_~y~0) (<= .cse3 |main_#t~post4|))) (let ((.cse4 (+ main_~x~0 60))) (and (<= .cse4 (* 5 |main_#t~post4|)) (<= .cse4 (* 5 main_~y~0)))) (let ((.cse5 (+ main_~x~0 86))) (and (<= .cse5 (* 9 main_~y~0)) (<= .cse5 (* 9 |main_#t~post4|))))) [2021-02-23 18:59:50,900 INFO L185 CegarLoopUtils]: At program point L31-2(line 31) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 51))) (or (and (<= (+ main_~x~0 71) (* 6 main_~y~0)) (<= (+ main_~x~0 65) (* 6 |main_#t~post4|))) (and (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= (+ main_~x~0 95) (* 10 |main_#t~post4|))) (and (<= (+ main_~x~0 78) (* 8 |main_#t~post4|)) (<= (+ main_~x~0 86) (* 8 main_~y~0))) (and (<= .cse0 main_~y~0) (<= (+ main_~x~0 50) |main_#t~post4|)) (and (<= (+ main_~x~0 56) (* 4 |main_#t~post4|)) (<= (+ main_~x~0 60) (* 4 main_~y~0))) (and (<= (+ main_~x~0 53) (* 2 main_~y~0)) (<= .cse0 (* 2 |main_#t~post4|))))) [2021-02-23 18:59:50,901 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2021-02-23 18:59:50,901 INFO L185 CegarLoopUtils]: At program point L29-2(lines 29 32) the Hoare annotation is: (or (<= (+ main_~x~0 53) (* 2 main_~y~0)) (<= (+ main_~x~0 65) (* 5 main_~y~0)) (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 56) (* 3 main_~y~0)) (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= (+ main_~x~0 95) (* 9 main_~y~0)) (<= (+ main_~x~0 78) (* 7 main_~y~0))) [2021-02-23 18:59:50,901 INFO L185 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2021-02-23 18:59:50,901 INFO L185 CegarLoopUtils]: At program point L29-3(lines 29 32) the Hoare annotation is: (and (<= 11 main_~y~0) (<= (+ main_~x~0 105) (* 10 main_~y~0))) [2021-02-23 18:59:50,901 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-23 18:59:50,901 INFO L185 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2021-02-23 18:59:50,901 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 35) the Hoare annotation is: true [2021-02-23 18:59:50,901 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 35) the Hoare annotation is: true [2021-02-23 18:59:50,902 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 65)) (.cse2 (* 6 main_~y~0))) (let ((.cse1 (<= .cse0 .cse2))) (or (<= (+ main_~x~0 53) (* 2 main_~y~0)) (<= .cse0 (* 5 main_~y~0)) (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 56) (* 3 main_~y~0)) (and .cse1 (<= (+ main_~x~0 86) (* 8 main_~y~0))) (and (<= (+ main_~x~0 105) (* 10 main_~y~0)) .cse1) (<= (+ main_~x~0 71) .cse2)))) [2021-02-23 18:59:50,902 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2021-02-23 18:59:50,902 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2021-02-23 18:59:50,902 INFO L185 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2021-02-23 18:59:50,902 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-23 18:59:50,902 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-02-23 18:59:50,902 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-23 18:59:50,903 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-02-23 18:59:50,903 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:59:50,903 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:59:50,903 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))) [2021-02-23 18:59:50,903 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:59:50,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:59:50 BoogieIcfgContainer [2021-02-23 18:59:50,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:59:50,927 INFO L168 Benchmark]: Toolchain (without parser) took 21763.53 ms. Allocated memory was 163.6 MB in the beginning and 345.0 MB in the end (delta: 181.4 MB). Free memory was 140.2 MB in the beginning and 260.6 MB in the end (delta: -120.4 MB). Peak memory consumption was 201.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:59:50,928 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 163.6 MB. Free memory was 136.7 MB in the beginning and 136.5 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:59:50,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.99 ms. Allocated memory is still 163.6 MB. Free memory was 139.1 MB in the beginning and 129.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:59:50,928 INFO L168 Benchmark]: Boogie Preprocessor took 35.20 ms. Allocated memory is still 163.6 MB. Free memory was 129.6 MB in the beginning and 128.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:59:50,928 INFO L168 Benchmark]: RCFGBuilder took 409.18 ms. Allocated memory is still 163.6 MB. Free memory was 128.0 MB in the beginning and 112.5 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:59:50,929 INFO L168 Benchmark]: TraceAbstraction took 21016.63 ms. Allocated memory was 163.6 MB in the beginning and 345.0 MB in the end (delta: 181.4 MB). Free memory was 112.1 MB in the beginning and 260.6 MB in the end (delta: -148.4 MB). Peak memory consumption was 173.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:59:50,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 163.6 MB. Free memory was 136.7 MB in the beginning and 136.5 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.99 ms. Allocated memory is still 163.6 MB. Free memory was 139.1 MB in the beginning and 129.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.20 ms. Allocated memory is still 163.6 MB. Free memory was 129.6 MB in the beginning and 128.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 409.18 ms. Allocated memory is still 163.6 MB. Free memory was 128.0 MB in the beginning and 112.5 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21016.63 ms. Allocated memory was 163.6 MB in the beginning and 345.0 MB in the end (delta: 181.4 MB). Free memory was 112.1 MB in the beginning and 260.6 MB in the end (delta: -148.4 MB). Peak memory consumption was 173.2 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: 29]: Loop Invariant Derived loop invariant: (((((x + 53 <= 2 * y || x + 65 <= 5 * y) || x + 50 <= 0) || x + 56 <= 3 * y) || x + 105 <= 10 * y) || x + 95 <= 9 * y) || x + 78 <= 7 * y - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.6s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 14.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 297 SDtfs, 577 SDslu, 1874 SDs, 0 SdLazy, 6976 SolverSat, 287 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 526 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 493 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6538 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 107 PreInvPairs, 191 NumberOfFragments, 426 HoareAnnotationTreeSize, 107 FomulaSimplifications, 173087 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 37 FomulaSimplificationsInter, 2303 FormulaSimplificationTreeSizeReductionInter, 0.7s 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...