/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:55:39,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:55:39,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:55:39,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:55:39,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:55:39,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:55:39,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:55:39,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:55:39,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:55:39,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:55:39,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:55:39,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:55:39,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:55:39,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:55:39,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:55:39,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:55:39,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:55:39,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:55:39,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:55:39,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:55:39,622 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 18:55:39,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:55:39,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:55:39,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:55:39,656 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:55:39,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:55:39,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:55:39,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:55:39,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:55:39,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:55:39,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:55:39,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:55:39,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:55:39,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:55:39,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:55:39,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:55:39,662 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:55:39,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:55:39,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:55:39,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:55:39,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:55:39,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:55:39,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:55:39,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:55:40,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:55:40,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:55:40,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:55:40,188 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:55:40,191 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:55:40,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2021-02-23 18:55:40,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f29fabd47/c39436150dba4bd685a3b41b4f35af31/FLAG452ed6c3e [2021-02-23 18:55:40,940 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:55:40,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i [2021-02-23 18:55:40,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f29fabd47/c39436150dba4bd685a3b41b4f35af31/FLAG452ed6c3e [2021-02-23 18:55:41,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f29fabd47/c39436150dba4bd685a3b41b4f35af31 [2021-02-23 18:55:41,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:55:41,333 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:55:41,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:55:41,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:55:41,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:55:41,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:55:41" (1/1) ... [2021-02-23 18:55:41,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782a2390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:41, skipping insertion in model container [2021-02-23 18:55:41,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:55:41" (1/1) ... [2021-02-23 18:55:41,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:55:41,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:55:41,527 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i[893,906] [2021-02-23 18:55:41,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:55:41,555 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:55:41,571 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i[893,906] [2021-02-23 18:55:41,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:55:41,595 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:55:41,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:41 WrapperNode [2021-02-23 18:55:41,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:55:41,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:55:41,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:55:41,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:55:41,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:41" (1/1) ... [2021-02-23 18:55:41,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:41" (1/1) ... [2021-02-23 18:55:41,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:41" (1/1) ... [2021-02-23 18:55:41,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:41" (1/1) ... [2021-02-23 18:55:41,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:41" (1/1) ... [2021-02-23 18:55:41,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:41" (1/1) ... [2021-02-23 18:55:41,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:41" (1/1) ... [2021-02-23 18:55:41,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:55:41,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:55:41,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:55:41,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:55:41,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:41" (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 18:55:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:55:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:55:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:55:41,758 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:55:41,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:55:41,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:55:41,758 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:55:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:55:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:55:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:55:41,759 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:55:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:55:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:55:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:55:41,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:55:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:55:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:55:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:55:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:55:41,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:55:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:55:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:55:42,295 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:55:42,296 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:55:42,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:55:42 BoogieIcfgContainer [2021-02-23 18:55:42,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:55:42,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:55:42,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:55:42,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:55:42,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:55:41" (1/3) ... [2021-02-23 18:55:42,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6b9c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:55:42, skipping insertion in model container [2021-02-23 18:55:42,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:41" (2/3) ... [2021-02-23 18:55:42,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6b9c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:55:42, skipping insertion in model container [2021-02-23 18:55:42,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:55:42" (3/3) ... [2021-02-23 18:55:42,320 INFO L111 eAbstractionObserver]: Analyzing ICFG nested6.i [2021-02-23 18:55:42,331 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:55:42,336 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:55:42,359 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:55:42,385 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:55:42,385 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:55:42,385 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:55:42,386 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:55:42,386 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:55:42,386 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:55:42,386 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:55:42,386 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:55:42,405 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2021-02-23 18:55:42,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-23 18:55:42,416 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:42,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:42,418 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:42,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:42,426 INFO L82 PathProgramCache]: Analyzing trace with hash -136807662, now seen corresponding path program 1 times [2021-02-23 18:55:42,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:42,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221658236] [2021-02-23 18:55:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:42,522 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:42,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:42,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:42,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:42,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:42,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:42,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:42,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:42,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:42,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:42,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:42,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:42,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:42,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:42,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:42,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:42,949 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 18:55:42,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221658236] [2021-02-23 18:55:42,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:42,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:55:42,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293963845] [2021-02-23 18:55:42,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:55:42,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:42,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:55:42,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:55:42,983 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 6 states. [2021-02-23 18:55:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:43,403 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2021-02-23 18:55:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:55:43,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-02-23 18:55:43,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:43,417 INFO L225 Difference]: With dead ends: 97 [2021-02-23 18:55:43,417 INFO L226 Difference]: Without dead ends: 55 [2021-02-23 18:55:43,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:55:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-02-23 18:55:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-02-23 18:55:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-23 18:55:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-02-23 18:55:43,500 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 34 [2021-02-23 18:55:43,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:43,501 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-02-23 18:55:43,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:55:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-02-23 18:55:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 18:55:43,506 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:43,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:43,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:55:43,507 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:43,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:43,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1206531044, now seen corresponding path program 1 times [2021-02-23 18:55:43,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:43,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318879130] [2021-02-23 18:55:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:43,518 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:43,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:43,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:43,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:43,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:55:43,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:43,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:55:43,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:43,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:43,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:43,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:43,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:43,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:43,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:43,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:43,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:43,754 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 18:55:43,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318879130] [2021-02-23 18:55:43,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:43,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:55:43,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887346509] [2021-02-23 18:55:43,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:55:43,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:43,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:55:43,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:55:43,760 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 7 states. [2021-02-23 18:55:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:44,300 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2021-02-23 18:55:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 18:55:44,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2021-02-23 18:55:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:44,304 INFO L225 Difference]: With dead ends: 97 [2021-02-23 18:55:44,304 INFO L226 Difference]: Without dead ends: 95 [2021-02-23 18:55:44,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-02-23 18:55:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-23 18:55:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 66. [2021-02-23 18:55:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-23 18:55:44,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2021-02-23 18:55:44,333 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 36 [2021-02-23 18:55:44,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:44,334 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2021-02-23 18:55:44,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:55:44,334 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2021-02-23 18:55:44,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-23 18:55:44,336 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:44,336 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:44,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:55:44,337 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:44,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:44,338 INFO L82 PathProgramCache]: Analyzing trace with hash -2135784643, now seen corresponding path program 1 times [2021-02-23 18:55:44,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:44,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561357936] [2021-02-23 18:55:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:44,342 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:44,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:44,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:44,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:44,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:44,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:44,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:44,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:44,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:44,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:44,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:44,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:44,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:44,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:44,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:44,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:44,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 18:55:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:44,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:44,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:44,552 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 18:55:44,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561357936] [2021-02-23 18:55:44,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:44,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:55:44,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951665671] [2021-02-23 18:55:44,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:55:44,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:44,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:55:44,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:55:44,557 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2021-02-23 18:55:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:44,919 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2021-02-23 18:55:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:55:44,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2021-02-23 18:55:44,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:44,923 INFO L225 Difference]: With dead ends: 93 [2021-02-23 18:55:44,923 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 18:55:44,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:55:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 18:55:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-02-23 18:55:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-02-23 18:55:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2021-02-23 18:55:44,949 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 39 [2021-02-23 18:55:44,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:44,950 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2021-02-23 18:55:44,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:55:44,950 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2021-02-23 18:55:44,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 18:55:44,952 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:44,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:44,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:55:44,953 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:44,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1350553423, now seen corresponding path program 1 times [2021-02-23 18:55:44,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:44,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844602876] [2021-02-23 18:55:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:44,987 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:55:44,989 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:45,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:45,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:45,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:45,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:55:45,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:45,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:55:45,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:45,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:55:45,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:45,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:55:45,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:45,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:45,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:45,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:45,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:45,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:45,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:45,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:45,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 18:55:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:45,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:45,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:45,175 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 18:55:45,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844602876] [2021-02-23 18:55:45,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:45,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 18:55:45,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838712936] [2021-02-23 18:55:45,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 18:55:45,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:45,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 18:55:45,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:55:45,178 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand 9 states. [2021-02-23 18:55:46,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:46,058 INFO L93 Difference]: Finished difference Result 144 states and 169 transitions. [2021-02-23 18:55:46,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 18:55:46,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2021-02-23 18:55:46,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:46,062 INFO L225 Difference]: With dead ends: 144 [2021-02-23 18:55:46,063 INFO L226 Difference]: Without dead ends: 142 [2021-02-23 18:55:46,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-02-23 18:55:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-02-23 18:55:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2021-02-23 18:55:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-23 18:55:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2021-02-23 18:55:46,096 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 45 [2021-02-23 18:55:46,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:46,097 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2021-02-23 18:55:46,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 18:55:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2021-02-23 18:55:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 18:55:46,099 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:46,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:46,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:55:46,100 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:46,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:46,101 INFO L82 PathProgramCache]: Analyzing trace with hash -788712718, now seen corresponding path program 1 times [2021-02-23 18:55:46,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:46,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075265662] [2021-02-23 18:55:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:46,105 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:55:46,107 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:46,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:46,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:46,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:46,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:46,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:46,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:55:46,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:46,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:55:46,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:46,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:55:46,216 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-23 18:55:46,217 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-23 18:55:46,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:46,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:46,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:46,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:46,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:46,253 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 18:55:46,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075265662] [2021-02-23 18:55:46,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:46,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:55:46,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262967581] [2021-02-23 18:55:46,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:55:46,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:46,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:55:46,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:55:46,256 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand 7 states. [2021-02-23 18:55:46,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:46,622 INFO L93 Difference]: Finished difference Result 199 states and 239 transitions. [2021-02-23 18:55:46,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:55:46,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2021-02-23 18:55:46,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:46,625 INFO L225 Difference]: With dead ends: 199 [2021-02-23 18:55:46,625 INFO L226 Difference]: Without dead ends: 133 [2021-02-23 18:55:46,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 18:55:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-02-23 18:55:46,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2021-02-23 18:55:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-02-23 18:55:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2021-02-23 18:55:46,670 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 45 [2021-02-23 18:55:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:46,671 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2021-02-23 18:55:46,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:55:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2021-02-23 18:55:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 18:55:46,673 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:46,673 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:46,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:55:46,674 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:46,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1188569516, now seen corresponding path program 1 times [2021-02-23 18:55:46,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:46,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277654148] [2021-02-23 18:55:46,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:48,863 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-02-23 18:55:48,874 WARN L141 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size [2021-02-23 18:55:48,937 WARN L147 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size 109 [2021-02-23 18:55:48,938 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-23 18:55:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:49,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:49,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:55:49,038 WARN L141 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-02-23 18:55:49,039 WARN L147 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size 5 [2021-02-23 18:55:49,041 WARN L141 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-02-23 18:55:49,043 WARN L147 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size 5 [2021-02-23 18:55:49,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:49,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:49,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:49,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:49,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:49,099 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 18:55:49,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-02-23 18:55:49,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-02-23 18:55:49,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:55:49,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:55:49,186 WARN L141 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size [2021-02-23 18:55:49,188 WARN L147 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-02-23 18:55:49,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:55:49,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:55:49,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:55:49,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:55:49,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:55:49,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:55:49,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:55:49,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:55:49,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 18:55:49,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:55:49,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 18:55:49,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:55:49,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-23 18:55:49,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:55:49,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:55:49,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:55:49,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:55:49,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:55:49,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:55:49,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:55:49,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 18:55:49,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:55:49,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 18:55:49,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:55:49,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-23 18:55:49,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:55:49,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-23 18:55:49,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:55:49,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-23 18:55:49,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:49,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:55:49,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-23 18:55:49,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:49,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:49,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277654148] [2021-02-23 18:55:49,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:49,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 18:55:49,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108159718] [2021-02-23 18:55:49,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 18:55:49,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:49,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 18:55:49,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-02-23 18:55:49,862 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand 20 states. [2021-02-23 18:55:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:53,218 INFO L93 Difference]: Finished difference Result 299 states and 378 transitions. [2021-02-23 18:55:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-23 18:55:53,219 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2021-02-23 18:55:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:53,223 INFO L225 Difference]: With dead ends: 299 [2021-02-23 18:55:53,224 INFO L226 Difference]: Without dead ends: 297 [2021-02-23 18:55:53,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=559, Invalid=2747, Unknown=0, NotChecked=0, Total=3306 [2021-02-23 18:55:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-02-23 18:55:53,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 192. [2021-02-23 18:55:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-02-23 18:55:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 239 transitions. [2021-02-23 18:55:53,294 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 239 transitions. Word has length 53 [2021-02-23 18:55:53,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:53,295 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 239 transitions. [2021-02-23 18:55:53,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 18:55:53,295 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 239 transitions. [2021-02-23 18:55:53,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-23 18:55:53,297 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:53,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:53,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:55:53,298 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:53,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:53,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1874994685, now seen corresponding path program 1 times [2021-02-23 18:55:53,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:53,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595431960] [2021-02-23 18:55:53,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:53,308 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:55:53,310 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:53,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:53,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:53,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:53,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:53,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:53,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:53,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:53,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:55:53,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:53,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:55:53,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:53,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:55:53,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:53,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:55:53,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:53,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:53,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:53,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:53,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:53,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 18:55:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:53,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:53,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:53,429 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 18:55:53,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595431960] [2021-02-23 18:55:53,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:53,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 18:55:53,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182124102] [2021-02-23 18:55:53,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 18:55:53,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:53,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 18:55:53,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:55:53,432 INFO L87 Difference]: Start difference. First operand 192 states and 239 transitions. Second operand 9 states. [2021-02-23 18:55:54,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:54,078 INFO L93 Difference]: Finished difference Result 364 states and 462 transitions. [2021-02-23 18:55:54,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 18:55:54,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2021-02-23 18:55:54,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:54,082 INFO L225 Difference]: With dead ends: 364 [2021-02-23 18:55:54,083 INFO L226 Difference]: Without dead ends: 239 [2021-02-23 18:55:54,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-02-23 18:55:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-02-23 18:55:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 221. [2021-02-23 18:55:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-02-23 18:55:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 277 transitions. [2021-02-23 18:55:54,152 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 277 transitions. Word has length 54 [2021-02-23 18:55:54,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:54,152 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 277 transitions. [2021-02-23 18:55:54,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 18:55:54,153 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 277 transitions. [2021-02-23 18:55:54,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 18:55:54,154 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:54,155 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:55:54,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 18:55:54,155 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:54,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1555242361, now seen corresponding path program 1 times [2021-02-23 18:55:54,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:54,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414092813] [2021-02-23 18:55:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:56,317 WARN L141 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size [2021-02-23 18:55:56,323 WARN L147 QuantifierPusher]: treesize reduction 6, result has 94.8 percent of original size 109 [2021-02-23 18:55:56,324 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-23 18:55:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:56,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:56,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:55:56,367 WARN L141 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-02-23 18:55:56,368 WARN L147 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size 5 [2021-02-23 18:55:56,369 WARN L141 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-02-23 18:55:56,369 WARN L147 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size 5 [2021-02-23 18:55:56,374 WARN L141 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size [2021-02-23 18:55:56,375 WARN L147 QuantifierPusher]: treesize reduction 15, result has 25.0 percent of original size 5 [2021-02-23 18:55:56,381 WARN L141 QuantifierPusher]: treesize reduction 15, result has 31.8 percent of original size [2021-02-23 18:55:56,382 WARN L147 QuantifierPusher]: treesize reduction 15, result has 31.8 percent of original size 7 [2021-02-23 18:55:56,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:56,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:56,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:56,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:56,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:56,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-23 18:55:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:56,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:55:56,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-02-23 18:55:56,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-02-23 18:55:56,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:55:56,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:55:56,524 WARN L141 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size [2021-02-23 18:55:56,527 WARN L147 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-02-23 18:55:56,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:55:56,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:55:56,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:55:56,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:55:56,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:55:56,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:55:56,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:55:56,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:55:56,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 18:55:56,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 18:55:56,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 18:55:56,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:55:56,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-23 18:55:56,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:55:56,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:55:56,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:55:56,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:55:56,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:55:56,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:55:56,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:55:56,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 18:55:56,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:55:56,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 18:55:56,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:55:56,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:55:56,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-23 18:55:56,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:56,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:55:57,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:57,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:55:57,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:57,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 18:55:57,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:57,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:57,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414092813] [2021-02-23 18:55:57,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:57,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-23 18:55:57,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848287892] [2021-02-23 18:55:57,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 18:55:57,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:57,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 18:55:57,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-02-23 18:55:57,069 INFO L87 Difference]: Start difference. First operand 221 states and 277 transitions. Second operand 22 states. [2021-02-23 18:56:00,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:56:00,375 INFO L93 Difference]: Finished difference Result 304 states and 376 transitions. [2021-02-23 18:56:00,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-23 18:56:00,375 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2021-02-23 18:56:00,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:56:00,380 INFO L225 Difference]: With dead ends: 304 [2021-02-23 18:56:00,381 INFO L226 Difference]: Without dead ends: 302 [2021-02-23 18:56:00,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=744, Invalid=3948, Unknown=0, NotChecked=0, Total=4692 [2021-02-23 18:56:00,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-02-23 18:56:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 221. [2021-02-23 18:56:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-02-23 18:56:00,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 277 transitions. [2021-02-23 18:56:00,471 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 277 transitions. Word has length 62 [2021-02-23 18:56:00,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:56:00,473 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 277 transitions. [2021-02-23 18:56:00,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 18:56:00,473 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 277 transitions. [2021-02-23 18:56:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-23 18:56:00,476 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:56:00,476 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:56:00,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 18:56:00,476 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:56:00,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:56:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1992090965, now seen corresponding path program 1 times [2021-02-23 18:56:00,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:56:00,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256231027] [2021-02-23 18:56:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:56:00,494 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-23 18:56:00,496 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-23 18:56:00,542 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:56:00,552 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:56:00,553 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:56:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:00,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:00,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:56:00,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:56:00,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:56:00,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:56:00,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:56:00,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:56:00,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:56:00,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:56:00,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:56:00,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:00,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:56:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:00,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:00,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 18:56:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:00,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-02-23 18:56:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:00,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:00,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:00,778 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 18:56:00,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256231027] [2021-02-23 18:56:00,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:56:00,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 18:56:00,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896659620] [2021-02-23 18:56:00,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 18:56:00,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:56:00,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 18:56:00,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-02-23 18:56:00,780 INFO L87 Difference]: Start difference. First operand 221 states and 277 transitions. Second operand 12 states. [2021-02-23 18:56:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:56:01,603 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2021-02-23 18:56:01,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 18:56:01,604 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2021-02-23 18:56:01,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:56:01,607 INFO L225 Difference]: With dead ends: 271 [2021-02-23 18:56:01,608 INFO L226 Difference]: Without dead ends: 269 [2021-02-23 18:56:01,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-02-23 18:56:01,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-02-23 18:56:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 246. [2021-02-23 18:56:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2021-02-23 18:56:01,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 307 transitions. [2021-02-23 18:56:01,690 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 307 transitions. Word has length 63 [2021-02-23 18:56:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:56:01,691 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 307 transitions. [2021-02-23 18:56:01,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 18:56:01,691 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 307 transitions. [2021-02-23 18:56:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-23 18:56:01,692 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:56:01,692 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:56:01,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 18:56:01,693 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:56:01,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:56:01,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1661366098, now seen corresponding path program 2 times [2021-02-23 18:56:01,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:56:01,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162602094] [2021-02-23 18:56:01,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:56:01,708 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:56:01,712 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:56:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:01,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:01,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:01,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:01,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:56:01,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:01,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:56:01,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:01,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:56:01,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:01,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:56:01,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:01,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:56:01,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:01,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:56:01,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:01,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:01,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:56:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:01,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:01,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:01,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 18:56:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:01,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:01,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:01,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 18:56:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:01,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:01,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 18:56:01,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162602094] [2021-02-23 18:56:01,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:56:01,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 18:56:01,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211449207] [2021-02-23 18:56:01,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 18:56:01,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:56:01,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 18:56:01,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:56:01,922 INFO L87 Difference]: Start difference. First operand 246 states and 307 transitions. Second operand 9 states. [2021-02-23 18:56:02,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:56:02,646 INFO L93 Difference]: Finished difference Result 302 states and 370 transitions. [2021-02-23 18:56:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 18:56:02,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2021-02-23 18:56:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:56:02,650 INFO L225 Difference]: With dead ends: 302 [2021-02-23 18:56:02,650 INFO L226 Difference]: Without dead ends: 300 [2021-02-23 18:56:02,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-02-23 18:56:02,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-02-23 18:56:02,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 242. [2021-02-23 18:56:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2021-02-23 18:56:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 299 transitions. [2021-02-23 18:56:02,721 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 299 transitions. Word has length 63 [2021-02-23 18:56:02,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:56:02,721 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 299 transitions. [2021-02-23 18:56:02,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 18:56:02,721 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 299 transitions. [2021-02-23 18:56:02,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-23 18:56:02,723 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:56:02,723 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:56:02,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 18:56:02,724 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:56:02,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:56:02,724 INFO L82 PathProgramCache]: Analyzing trace with hash 583364086, now seen corresponding path program 1 times [2021-02-23 18:56:02,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:56:02,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106325726] [2021-02-23 18:56:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:56:02,741 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-23 18:56:02,743 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-23 18:56:02,782 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:56:02,782 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:56:02,807 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:56:02,808 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:56:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:02,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:02,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:56:02,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:56:02,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:56:02,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:56:02,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:56:02,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:56:02,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:56:02,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:02,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:56:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:02,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:02,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 18:56:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:02,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:02,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-23 18:56:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:02,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:02,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 18:56:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:02,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:02,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-02-23 18:56:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:02,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:02,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 18:56:02,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106325726] [2021-02-23 18:56:02,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:56:02,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:56:02,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147299271] [2021-02-23 18:56:02,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:56:02,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:56:02,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:56:02,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:56:02,962 INFO L87 Difference]: Start difference. First operand 242 states and 299 transitions. Second operand 10 states. [2021-02-23 18:56:03,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:56:03,835 INFO L93 Difference]: Finished difference Result 448 states and 552 transitions. [2021-02-23 18:56:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 18:56:03,836 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2021-02-23 18:56:03,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:56:03,842 INFO L225 Difference]: With dead ends: 448 [2021-02-23 18:56:03,842 INFO L226 Difference]: Without dead ends: 288 [2021-02-23 18:56:03,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-02-23 18:56:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-02-23 18:56:03,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 253. [2021-02-23 18:56:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2021-02-23 18:56:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 311 transitions. [2021-02-23 18:56:03,922 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 311 transitions. Word has length 86 [2021-02-23 18:56:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:56:03,923 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 311 transitions. [2021-02-23 18:56:03,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:56:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 311 transitions. [2021-02-23 18:56:03,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-02-23 18:56:03,924 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:56:03,925 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:56:03,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 18:56:03,925 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:56:03,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:56:03,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1981971922, now seen corresponding path program 2 times [2021-02-23 18:56:03,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:56:03,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133508837] [2021-02-23 18:56:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:56:03,946 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-23 18:56:03,948 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-23 18:56:04,094 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2021-02-23 18:56:04,098 WARN L141 QuantifierPusher]: treesize reduction 3, result has 96.4 percent of original size [2021-02-23 18:56:04,102 WARN L147 QuantifierPusher]: treesize reduction 3, result has 96.4 percent of original size 80 [2021-02-23 18:56:04,238 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.8 percent of original size [2021-02-23 18:56:04,245 INFO L424 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-02-23 18:56:04,245 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-23 18:56:04,250 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,254 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.8 percent of original size 60 [2021-02-23 18:56:04,289 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:56:04,290 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:56:04,325 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:56:04,332 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:56:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:04,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:04,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:56:04,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:56:04,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:56:04,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:56:04,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:56:04,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:56:04,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:04,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:56:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:04,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:04,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 18:56:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:04,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:04,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-23 18:56:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:04,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:04,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-02-23 18:56:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:04,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:04,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-23 18:56:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:04,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:04,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-02-23 18:56:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:04,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 18:56:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:56:04,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:56:04,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:56:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-23 18:56:04,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133508837] [2021-02-23 18:56:04,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:56:04,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 18:56:04,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210227199] [2021-02-23 18:56:04,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 18:56:04,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:56:04,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 18:56:04,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:56:04,617 INFO L87 Difference]: Start difference. First operand 253 states and 311 transitions. Second operand 9 states. [2021-02-23 18:56:05,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:56:05,153 INFO L93 Difference]: Finished difference Result 357 states and 438 transitions. [2021-02-23 18:56:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 18:56:05,154 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2021-02-23 18:56:05,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:56:05,155 INFO L225 Difference]: With dead ends: 357 [2021-02-23 18:56:05,155 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 18:56:05,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-02-23 18:56:05,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 18:56:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 18:56:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 18:56:05,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 18:56:05,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2021-02-23 18:56:05,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:56:05,158 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 18:56:05,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 18:56:05,158 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 18:56:05,159 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 18:56:05,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 18:56:05,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 18:56:05,341 WARN L202 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2021-02-23 18:56:05,458 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 91 [2021-02-23 18:56:05,708 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 108 [2021-02-23 18:56:05,937 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 104 [2021-02-23 18:56:06,071 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 102 [2021-02-23 18:56:06,203 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 98 [2021-02-23 18:56:06,393 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 92 [2021-02-23 18:56:06,866 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 139 [2021-02-23 18:56:07,343 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 130 [2021-02-23 18:56:08,108 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 27 [2021-02-23 18:56:08,246 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 11 [2021-02-23 18:56:08,699 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 28 [2021-02-23 18:56:09,047 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 28 [2021-02-23 18:56:09,311 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 19 [2021-02-23 18:56:09,546 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 15 [2021-02-23 18:56:09,782 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 14 [2021-02-23 18:56:10,360 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 16 [2021-02-23 18:56:10,468 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 23 [2021-02-23 18:56:10,799 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 23 [2021-02-23 18:56:11,080 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 14 [2021-02-23 18:56:11,228 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 21 [2021-02-23 18:56:11,377 WARN L202 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 25 [2021-02-23 18:56:11,491 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2021-02-23 18:56:11,859 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 17 [2021-02-23 18:56:11,864 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 18:56:11,864 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 18:56:11,864 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 18:56:11,864 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-23 18:56:11,864 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-23 18:56:11,865 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:56:11,865 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 18:56:11,865 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-23 18:56:11,865 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-23 18:56:11,865 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-23 18:56:11,865 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-23 18:56:11,865 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 18:56:11,865 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-23 18:56:11,865 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:56:11,865 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:56:11,866 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:56:11,866 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 18:56:11,866 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 18:56:11,866 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-23 18:56:11,866 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-23 18:56:11,866 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:56:11,866 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:56:11,866 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:56:11,866 INFO L185 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (<= main_~n~0 main_~k~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and (<= (+ .cse0 1) main_~j~0) .cse1 (<= (+ main_~j~0 1) main_~n~0) .cse2) (and (<= .cse0 main_~j~0) (< main_~j~0 main_~n~0) (<= 0 (+ |main_#t~nondet7| 2147483648)) .cse1 .cse2 (<= |main_#t~nondet7| 2147483647)))) [2021-02-23 18:56:11,867 INFO L185 CegarLoopUtils]: At program point L35-3(line 35) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (<= main_~n~0 main_~k~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and (<= (+ .cse0 1) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) .cse1 .cse2) (and (<= .cse0 main_~j~0) (< main_~j~0 main_~n~0) (= |main_#t~nondet7| 0) .cse1 .cse2))) [2021-02-23 18:56:11,867 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-23 18:56:11,867 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-23 18:56:11,867 INFO L192 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: true [2021-02-23 18:56:11,867 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 48) the Hoare annotation is: true [2021-02-23 18:56:11,867 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (< main_~j~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-23 18:56:11,867 INFO L185 CegarLoopUtils]: At program point L36-3(line 36) the Hoare annotation is: (let ((.cse1 (* 2 main_~i~0))) (let ((.cse0 (<= .cse1 main_~j~0)) (.cse2 (<= .cse1 |main_#t~post8|))) (or (and .cse0 (<= .cse1 main_~k~0) (<= |main_#t~post8| main_~j~0) .cse2 (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~j~0)) (and (<= (+ |main_#t~post8| 1) main_~n~0) .cse0 (< main_~j~0 main_~n~0) (<= (+ main_~k~0 1) main_~n~0) .cse2 (<= (+ .cse1 1) main_~k~0))))) [2021-02-23 18:56:11,867 INFO L185 CegarLoopUtils]: At program point L36-4(line 36) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ |main_#t~post8| 1) main_~n~0) (<= .cse0 main_~j~0) (< main_~j~0 main_~n~0) (<= .cse0 |main_#t~post8|) (<= (+ .cse0 1) main_~k~0) (<= main_~k~0 main_~n~0))) [2021-02-23 18:56:11,867 INFO L185 CegarLoopUtils]: At program point L36-5(lines 36 38) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0))) [2021-02-23 18:56:11,868 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-23 18:56:11,868 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-23 18:56:11,868 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (< main_~j~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-23 18:56:11,868 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-23 18:56:11,868 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (< main_~j~0 main_~n~0) (<= (+ main_~k~0 1) main_~n~0))) [2021-02-23 18:56:11,868 INFO L185 CegarLoopUtils]: At program point L37-1(lines 36 38) the Hoare annotation is: (let ((.cse1 (<= (+ main_~j~0 1) main_~n~0)) (.cse0 (* 2 main_~i~0))) (or (and (<= .cse0 main_~k~0) .cse1 (<= main_~k~0 main_~j~0)) (and (<= .cse0 main_~j~0) (<= (+ main_~k~0 1) main_~n~0) .cse1 (<= (+ .cse0 1) main_~k~0)))) [2021-02-23 18:56:11,868 INFO L185 CegarLoopUtils]: At program point L33-2(lines 33 45) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~j~0) (<= main_~n~0 main_~k~0) (exists ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (let ((.cse0 (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0))) (and (not (= .cse0 0)) (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1) (= .cse0 (ite (<= main_~k~0 main_~n~0) 1 0)) (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1))))) [2021-02-23 18:56:11,868 INFO L185 CegarLoopUtils]: At program point L33-3(line 33) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~j~0) (<= main_~n~0 main_~k~0) (exists ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (let ((.cse0 (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0))) (and (not (= .cse0 0)) (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1) (= .cse0 (ite (<= main_~k~0 main_~n~0) 1 0)) (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1))))) [2021-02-23 18:56:11,869 INFO L192 CegarLoopUtils]: At program point L29(lines 29 32) the Hoare annotation is: true [2021-02-23 18:56:11,869 INFO L185 CegarLoopUtils]: At program point L33-4(line 33) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-23 18:56:11,869 INFO L185 CegarLoopUtils]: At program point L29-1(lines 29 32) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-23 18:56:11,869 INFO L185 CegarLoopUtils]: At program point L33-5(lines 33 45) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and (<= main_~n~0 main_~j~0) .cse0 .cse1) (and (= main_~i~0 0) .cse0 .cse1))) [2021-02-23 18:56:11,869 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-23 18:56:11,869 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-23 18:56:11,869 INFO L192 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: true [2021-02-23 18:56:11,869 INFO L192 CegarLoopUtils]: At program point L46(lines 24 48) the Hoare annotation is: true [2021-02-23 18:56:11,869 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 48) the Hoare annotation is: true [2021-02-23 18:56:11,869 INFO L185 CegarLoopUtils]: At program point L42(lines 34 44) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0)) [2021-02-23 18:56:11,870 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~k~0)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and (<= main_~n~0 main_~j~0) .cse0 .cse1) (and (= main_~i~0 0) .cse0 (<= (+ main_~i~0 1) main_~n~0) .cse1))) [2021-02-23 18:56:11,870 INFO L185 CegarLoopUtils]: At program point L34-3(line 34) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~n~0 main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= .cse0 |main_#t~post6|) (<= main_~k~0 main_~n~0))) [2021-02-23 18:56:11,870 INFO L185 CegarLoopUtils]: At program point L34-4(line 34) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ .cse0 1) main_~j~0) (<= main_~n~0 main_~k~0) (<= .cse0 |main_#t~post6|) (<= main_~k~0 main_~n~0))) [2021-02-23 18:56:11,870 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 48) the Hoare annotation is: true [2021-02-23 18:56:11,870 INFO L185 CegarLoopUtils]: At program point L34-5(lines 34 44) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-23 18:56:11,870 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-23 18:56:11,871 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-23 18:56:11,871 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-23 18:56:11,871 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (< main_~j~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2021-02-23 18:56:11,871 INFO L185 CegarLoopUtils]: At program point L35-1(lines 35 43) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (<= main_~n~0 main_~k~0)) (.cse2 (<= main_~k~0 main_~n~0))) (or (and (<= (+ .cse0 1) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) .cse1 .cse2) (and (<= .cse0 main_~j~0) (< main_~j~0 main_~n~0) (<= 0 (+ |main_#t~nondet7| 2147483648)) .cse1 .cse2 (<= |main_#t~nondet7| 2147483647)))) [2021-02-23 18:56:11,871 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-23 18:56:11,871 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-23 18:56:11,871 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-23 18:56:11,872 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-23 18:56:11,872 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-23 18:56:11,872 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-23 18:56:11,872 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (forall ((v_main_~n~0_BEFORE_CALL_1 Int) (v_main_~k~0_BEFORE_CALL_1 Int) (v_main_~j~0_BEFORE_CALL_1 Int) (v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (<= v_main_~n~0_BEFORE_CALL_1 v_main_~k~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (< v_main_~j~0_BEFORE_CALL_1 v_main_~n~0_BEFORE_CALL_1)) (not (<= (* 2 v_main_~i~0_BEFORE_CALL_1) v_main_~j~0_BEFORE_CALL_1))))) [2021-02-23 18:56:11,893 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,894 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:56:11 BoogieIcfgContainer [2021-02-23 18:56:11,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:56:11,898 INFO L168 Benchmark]: Toolchain (without parser) took 30577.11 ms. Allocated memory was 163.6 MB in the beginning and 285.2 MB in the end (delta: 121.6 MB). Free memory was 139.2 MB in the beginning and 116.3 MB in the end (delta: 22.8 MB). Peak memory consumption was 168.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:56:11,898 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 163.6 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:56:11,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.74 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 128.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:56:11,898 INFO L168 Benchmark]: Boogie Preprocessor took 43.12 ms. Allocated memory is still 163.6 MB. Free memory was 128.5 MB in the beginning and 126.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:56:11,899 INFO L168 Benchmark]: RCFGBuilder took 656.81 ms. Allocated memory is still 163.6 MB. Free memory was 126.8 MB in the beginning and 144.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:56:11,899 INFO L168 Benchmark]: TraceAbstraction took 29597.34 ms. Allocated memory was 163.6 MB in the beginning and 285.2 MB in the end (delta: 121.6 MB). Free memory was 143.6 MB in the beginning and 116.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 172.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:56:11,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 163.6 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.74 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 128.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.12 ms. Allocated memory is still 163.6 MB. Free memory was 128.5 MB in the beginning and 126.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 656.81 ms. Allocated memory is still 163.6 MB. Free memory was 126.8 MB in the beginning and 144.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 29597.34 ms. Allocated memory was 163.6 MB in the beginning and 285.2 MB in the end (delta: 121.6 MB). Free memory was 143.6 MB in the beginning and 116.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 172.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] * 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: 33]: Loop Invariant Derived loop invariant: ((n <= j && n <= k) && k <= n) || ((i == 0 && n <= k) && k <= n) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (2 * i <= j && n <= k) && k <= n - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((2 * i <= j && 2 * i <= k) && j + 1 <= n) && k <= n - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert [2021-02-23 18:56:11,904 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,904 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,904 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,904 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,904 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,904 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,905 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,905 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~k~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,905 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,905 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~n~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,905 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-23 18:56:11,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_BEFORE_CALL_1,QUANTIFIED] Derived contract for procedure __VERIFIER_assert: (\old(cond) == 0 || \old(cond) == cond) || (forall v_main_~n~0_BEFORE_CALL_1 : int, v_main_~k~0_BEFORE_CALL_1 : int, v_main_~j~0_BEFORE_CALL_1 : int, v_main_~i~0_BEFORE_CALL_1 : int :: (!((if v_main_~n~0_BEFORE_CALL_1 <= v_main_~k~0_BEFORE_CALL_1 then 1 else 0) == \old(cond)) || !(v_main_~j~0_BEFORE_CALL_1 < v_main_~n~0_BEFORE_CALL_1)) || !(2 * v_main_~i~0_BEFORE_CALL_1 <= v_main_~j~0_BEFORE_CALL_1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.7s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 599 SDtfs, 1495 SDslu, 884 SDs, 0 SdLazy, 3650 SolverSat, 483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 96 SyntacticMatches, 6 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2927 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 409 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 58 LocationsWithAnnotation, 611 PreInvPairs, 870 NumberOfFragments, 785 HoareAnnotationTreeSize, 611 FomulaSimplifications, 2147470 FormulaSimplificationTreeSizeReduction, 2.6s HoareSimplificationTime, 58 FomulaSimplificationsInter, 31949 FormulaSimplificationTreeSizeReductionInter, 4.0s 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...