/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/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:24:03,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:24:03,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:24:03,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:24:03,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:24:03,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:24:03,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:24:03,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:24:03,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:24:03,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:24:03,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:24:03,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:24:03,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:24:03,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:24:03,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:24:03,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:24:03,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:24:03,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:24:03,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:24:03,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:24:03,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:24:03,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:24:03,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:24:03,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:24:03,847 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:24:03,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:24:03,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:24:03,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:24:03,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:24:03,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:24:03,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:24:03,849 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:24:03,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:24:03,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:24:03,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:24:03,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:24:03,850 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:24:03,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:24:03,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:24:03,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:24:03,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:24:03,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:24:03,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:24:03,852 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:24:04,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:24:04,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:24:04,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:24:04,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:24:04,318 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:24:04,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2021-02-21 21:24:04,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636be12b0/ebb0653f007d461b91e63b73dab77129/FLAG7ca659349 [2021-02-21 21:24:05,151 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:24:05,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2021-02-21 21:24:05,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636be12b0/ebb0653f007d461b91e63b73dab77129/FLAG7ca659349 [2021-02-21 21:24:05,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636be12b0/ebb0653f007d461b91e63b73dab77129 [2021-02-21 21:24:05,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:24:05,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:24:05,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:24:05,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:24:05,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:24:05,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:24:05" (1/1) ... [2021-02-21 21:24:05,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2298232e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:05, skipping insertion in model container [2021-02-21 21:24:05,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:24:05" (1/1) ... [2021-02-21 21:24:05,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:24:05,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:24:05,705 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/large_const.i[893,906] [2021-02-21 21:24:05,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:24:05,731 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:24:05,746 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/large_const.i[893,906] [2021-02-21 21:24:05,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:24:05,774 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:24:05,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:05 WrapperNode [2021-02-21 21:24:05,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:24:05,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:24:05,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:24:05,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:24:05,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:05" (1/1) ... [2021-02-21 21:24:05,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:05" (1/1) ... [2021-02-21 21:24:05,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:05" (1/1) ... [2021-02-21 21:24:05,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:05" (1/1) ... [2021-02-21 21:24:05,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:05" (1/1) ... [2021-02-21 21:24:05,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:05" (1/1) ... [2021-02-21 21:24:05,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:05" (1/1) ... [2021-02-21 21:24:05,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:24:05,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:24:05,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:24:05,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:24:05,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:24:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:24:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:24:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:24:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:24:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:24:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:24:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:24:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:24:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:24:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:24:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:24:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:24:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:24:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:24:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:24:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:24:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:24:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:24:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:24:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:24:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:24:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:24:06,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:24:06,346 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 21:24:06,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:24:06 BoogieIcfgContainer [2021-02-21 21:24:06,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:24:06,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:24:06,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:24:06,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:24:06,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:24:05" (1/3) ... [2021-02-21 21:24:06,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db63ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:24:06, skipping insertion in model container [2021-02-21 21:24:06,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:24:05" (2/3) ... [2021-02-21 21:24:06,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db63ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:24:06, skipping insertion in model container [2021-02-21 21:24:06,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:24:06" (3/3) ... [2021-02-21 21:24:06,365 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2021-02-21 21:24:06,375 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:24:06,380 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:24:06,404 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:24:06,448 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:24:06,449 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:24:06,449 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:24:06,449 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:24:06,449 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:24:06,449 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:24:06,450 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:24:06,450 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:24:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2021-02-21 21:24:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-21 21:24:06,506 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:06,508 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] [2021-02-21 21:24:06,508 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:06,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:06,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1417410242, now seen corresponding path program 1 times [2021-02-21 21:24:06,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:06,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420071495] [2021-02-21 21:24:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:06,644 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:06,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:06,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:06,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:06,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:06,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:06,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:06,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:07,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420071495] [2021-02-21 21:24:07,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:07,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:24:07,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297856966] [2021-02-21 21:24:07,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:24:07,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:07,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:24:07,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:24:07,038 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2021-02-21 21:24:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:07,208 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2021-02-21 21:24:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:24:07,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2021-02-21 21:24:07,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:07,223 INFO L225 Difference]: With dead ends: 83 [2021-02-21 21:24:07,223 INFO L226 Difference]: Without dead ends: 55 [2021-02-21 21:24:07,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:24:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-02-21 21:24:07,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-02-21 21:24:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-21 21:24:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2021-02-21 21:24:07,293 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 34 [2021-02-21 21:24:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:07,294 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2021-02-21 21:24:07,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:24:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2021-02-21 21:24:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-21 21:24:07,296 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:07,296 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] [2021-02-21 21:24:07,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:24:07,297 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:07,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:07,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1385213215, now seen corresponding path program 1 times [2021-02-21 21:24:07,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:07,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447889667] [2021-02-21 21:24:07,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:07,302 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:07,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:07,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:07,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:07,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:07,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:07,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:07,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:07,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447889667] [2021-02-21 21:24:07,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:07,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:24:07,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898527589] [2021-02-21 21:24:07,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:24:07,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:07,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:24:07,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:24:07,496 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 6 states. [2021-02-21 21:24:07,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:07,789 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-02-21 21:24:07,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:24:07,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-02-21 21:24:07,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:07,792 INFO L225 Difference]: With dead ends: 74 [2021-02-21 21:24:07,792 INFO L226 Difference]: Without dead ends: 58 [2021-02-21 21:24:07,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:24:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-21 21:24:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-02-21 21:24:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-21 21:24:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-02-21 21:24:07,812 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 34 [2021-02-21 21:24:07,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:07,812 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-02-21 21:24:07,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:24:07,813 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-02-21 21:24:07,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-21 21:24:07,814 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:07,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:07,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:24:07,815 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:07,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:07,816 INFO L82 PathProgramCache]: Analyzing trace with hash -359389512, now seen corresponding path program 1 times [2021-02-21 21:24:07,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:07,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203348308] [2021-02-21 21:24:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:07,845 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:07,847 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:07,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:07,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:07,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:07,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:07,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:07,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:07,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:07,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:08,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:08,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:08,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:08,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203348308] [2021-02-21 21:24:08,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:08,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 21:24:08,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561917265] [2021-02-21 21:24:08,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 21:24:08,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:08,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 21:24:08,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 21:24:08,036 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 8 states. [2021-02-21 21:24:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:08,444 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-02-21 21:24:08,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 21:24:08,444 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2021-02-21 21:24:08,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:08,446 INFO L225 Difference]: With dead ends: 95 [2021-02-21 21:24:08,447 INFO L226 Difference]: Without dead ends: 93 [2021-02-21 21:24:08,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-02-21 21:24:08,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-02-21 21:24:08,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 73. [2021-02-21 21:24:08,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-21 21:24:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2021-02-21 21:24:08,467 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 44 [2021-02-21 21:24:08,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:08,468 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2021-02-21 21:24:08,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 21:24:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2021-02-21 21:24:08,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-21 21:24:08,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:08,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:08,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:24:08,471 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:08,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:08,471 INFO L82 PathProgramCache]: Analyzing trace with hash 103516029, now seen corresponding path program 1 times [2021-02-21 21:24:08,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:08,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867505755] [2021-02-21 21:24:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:08,479 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:08,481 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:08,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:08,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:08,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:08,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:08,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:08,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:08,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:08,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:08,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:08,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:08,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:08,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:08,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:08,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:08,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:08,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:08,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:08,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867505755] [2021-02-21 21:24:08,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:08,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 21:24:08,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162295422] [2021-02-21 21:24:08,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 21:24:08,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:08,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 21:24:08,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 21:24:08,611 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 8 states. [2021-02-21 21:24:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:09,032 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2021-02-21 21:24:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 21:24:09,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2021-02-21 21:24:09,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:09,036 INFO L225 Difference]: With dead ends: 112 [2021-02-21 21:24:09,036 INFO L226 Difference]: Without dead ends: 110 [2021-02-21 21:24:09,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-02-21 21:24:09,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-21 21:24:09,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 92. [2021-02-21 21:24:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-02-21 21:24:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-02-21 21:24:09,060 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 45 [2021-02-21 21:24:09,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:09,061 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-02-21 21:24:09,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 21:24:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-02-21 21:24:09,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-21 21:24:09,062 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:09,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:09,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:24:09,063 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:09,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:09,064 INFO L82 PathProgramCache]: Analyzing trace with hash -90416355, now seen corresponding path program 1 times [2021-02-21 21:24:09,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:09,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350374439] [2021-02-21 21:24:09,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:09,070 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:09,071 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:09,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:09,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:09,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:09,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:09,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:09,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:09,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:09,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:09,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:09,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350374439] [2021-02-21 21:24:09,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:09,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 21:24:09,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476456607] [2021-02-21 21:24:09,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 21:24:09,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:09,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 21:24:09,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 21:24:09,221 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 8 states. [2021-02-21 21:24:09,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:09,582 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2021-02-21 21:24:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 21:24:09,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2021-02-21 21:24:09,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:09,585 INFO L225 Difference]: With dead ends: 123 [2021-02-21 21:24:09,585 INFO L226 Difference]: Without dead ends: 121 [2021-02-21 21:24:09,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-02-21 21:24:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-21 21:24:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 104. [2021-02-21 21:24:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-02-21 21:24:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2021-02-21 21:24:09,611 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 45 [2021-02-21 21:24:09,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:09,612 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2021-02-21 21:24:09,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 21:24:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2021-02-21 21:24:09,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 21:24:09,614 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:09,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:09,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:24:09,615 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:09,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:09,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1788729638, now seen corresponding path program 1 times [2021-02-21 21:24:09,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:09,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224362003] [2021-02-21 21:24:09,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:09,621 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:09,623 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:09,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:09,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:09,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:09,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:09,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:09,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:09,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:09,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:09,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:09,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:09,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:09,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-21 21:24:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:09,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:09,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:09,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224362003] [2021-02-21 21:24:09,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:09,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 21:24:09,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815805012] [2021-02-21 21:24:09,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 21:24:09,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:09,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 21:24:09,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:24:09,799 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand 10 states. [2021-02-21 21:24:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:10,269 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2021-02-21 21:24:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 21:24:10,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2021-02-21 21:24:10,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:10,271 INFO L225 Difference]: With dead ends: 136 [2021-02-21 21:24:10,271 INFO L226 Difference]: Without dead ends: 134 [2021-02-21 21:24:10,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:24:10,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-21 21:24:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2021-02-21 21:24:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-02-21 21:24:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 130 transitions. [2021-02-21 21:24:10,300 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 130 transitions. Word has length 56 [2021-02-21 21:24:10,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:10,300 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 130 transitions. [2021-02-21 21:24:10,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 21:24:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 130 transitions. [2021-02-21 21:24:10,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-21 21:24:10,302 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:10,302 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, 1] [2021-02-21 21:24:10,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:24:10,303 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:10,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:10,303 INFO L82 PathProgramCache]: Analyzing trace with hash -871975098, now seen corresponding path program 1 times [2021-02-21 21:24:10,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:10,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067807576] [2021-02-21 21:24:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:10,313 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:10,315 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:10,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:10,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:10,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:10,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:10,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:10,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:10,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:10,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:10,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067807576] [2021-02-21 21:24:10,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:10,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 21:24:10,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340681811] [2021-02-21 21:24:10,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 21:24:10,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:10,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 21:24:10,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:24:10,392 INFO L87 Difference]: Start difference. First operand 117 states and 130 transitions. Second operand 7 states. [2021-02-21 21:24:10,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:10,693 INFO L93 Difference]: Finished difference Result 157 states and 173 transitions. [2021-02-21 21:24:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 21:24:10,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2021-02-21 21:24:10,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:10,698 INFO L225 Difference]: With dead ends: 157 [2021-02-21 21:24:10,702 INFO L226 Difference]: Without dead ends: 77 [2021-02-21 21:24:10,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:24:10,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-21 21:24:10,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-02-21 21:24:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-21 21:24:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2021-02-21 21:24:10,757 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 55 [2021-02-21 21:24:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:10,761 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2021-02-21 21:24:10,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 21:24:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2021-02-21 21:24:10,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-21 21:24:10,762 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:10,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:10,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 21:24:10,765 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:10,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:10,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1996932501, now seen corresponding path program 1 times [2021-02-21 21:24:10,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:10,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843896465] [2021-02-21 21:24:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:10,777 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:10,779 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:10,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:10,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:10,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:10,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:10,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:10,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:10,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:10,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:10,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:10,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:10,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:24:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:10,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:10,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:10,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843896465] [2021-02-21 21:24:10,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:10,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 21:24:10,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315095473] [2021-02-21 21:24:10,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 21:24:10,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:10,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 21:24:10,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:24:10,916 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 10 states. [2021-02-21 21:24:11,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:11,342 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2021-02-21 21:24:11,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 21:24:11,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2021-02-21 21:24:11,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:11,344 INFO L225 Difference]: With dead ends: 103 [2021-02-21 21:24:11,344 INFO L226 Difference]: Without dead ends: 101 [2021-02-21 21:24:11,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:24:11,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-02-21 21:24:11,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 76. [2021-02-21 21:24:11,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-21 21:24:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2021-02-21 21:24:11,362 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 57 [2021-02-21 21:24:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:11,363 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2021-02-21 21:24:11,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 21:24:11,363 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2021-02-21 21:24:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-21 21:24:11,364 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:11,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:11,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 21:24:11,365 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:11,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:11,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1705614859, now seen corresponding path program 1 times [2021-02-21 21:24:11,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:11,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250773110] [2021-02-21 21:24:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:11,371 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:11,373 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:11,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:11,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:11,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:11,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:11,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:11,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:11,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:11,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:24:11,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:11,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:11,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 21:24:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:11,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:11,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250773110] [2021-02-21 21:24:11,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:11,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 21:24:11,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728255055] [2021-02-21 21:24:11,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 21:24:11,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:11,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 21:24:11,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:24:11,485 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 10 states. [2021-02-21 21:24:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:11,893 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2021-02-21 21:24:11,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 21:24:11,894 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2021-02-21 21:24:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:11,895 INFO L225 Difference]: With dead ends: 101 [2021-02-21 21:24:11,896 INFO L226 Difference]: Without dead ends: 99 [2021-02-21 21:24:11,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:24:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-02-21 21:24:11,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2021-02-21 21:24:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-21 21:24:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2021-02-21 21:24:11,918 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 57 [2021-02-21 21:24:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:11,918 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2021-02-21 21:24:11,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 21:24:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2021-02-21 21:24:11,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-21 21:24:11,922 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:24:11,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:24:11,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 21:24:11,922 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:24:11,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:24:11,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1141287276, now seen corresponding path program 2 times [2021-02-21 21:24:11,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:24:11,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223218475] [2021-02-21 21:24:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:24:11,932 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:24:11,934 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:24:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:11,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:11,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:11,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:11,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:24:11,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:24:11,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:11,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:12,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:24:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:12,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:12,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:12,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-21 21:24:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:12,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:12,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:12,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-21 21:24:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:24:12,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:24:12,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:24:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:24:12,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223218475] [2021-02-21 21:24:12,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:24:12,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 21:24:12,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469906455] [2021-02-21 21:24:12,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 21:24:12,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:24:12,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 21:24:12,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:24:12,040 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 7 states. [2021-02-21 21:24:12,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:24:12,241 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2021-02-21 21:24:12,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 21:24:12,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2021-02-21 21:24:12,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:24:12,242 INFO L225 Difference]: With dead ends: 74 [2021-02-21 21:24:12,242 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:24:12,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-02-21 21:24:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:24:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:24:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:24:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:24:12,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2021-02-21 21:24:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:24:12,244 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:24:12,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 21:24:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:24:12,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:24:12,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 21:24:12,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:24:14,029 WARN L202 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2021-02-21 21:24:14,161 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:24:14,161 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:24:14,161 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:24:14,162 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:24:14,162 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:24:14,162 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:14,162 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:14,162 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-21 21:24:14,162 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:24:14,163 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:24:14,163 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:24:14,163 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)|)) [2021-02-21 21:24:14,163 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:24:14,163 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:24:14,163 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:24:14,163 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:24:14,164 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:24:14,164 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:24:14,164 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-21 21:24:14,164 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-21 21:24:14,164 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:14,164 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:14,164 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:24:14,165 INFO L185 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (= |main_#t~post4| 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,165 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,165 INFO L192 CegarLoopUtils]: At program point L31-1(line 31) the Hoare annotation is: true [2021-02-21 21:24:14,165 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2021-02-21 21:24:14,165 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 52) the Hoare annotation is: true [2021-02-21 21:24:14,165 INFO L185 CegarLoopUtils]: At program point L48(line 48) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (= |main_#t~post6| 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,166 INFO L185 CegarLoopUtils]: At program point L48-1(line 48) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (= |main_#t~post6| 0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,166 INFO L185 CegarLoopUtils]: At program point L40(lines 40 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,166 INFO L185 CegarLoopUtils]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 10000 main_~c3~0))) (or (and .cse0 (= main_~k~0 0) (= main_~i~0 0) .cse1 .cse2) (and .cse0 (<= 1 main_~i~0) (<= 2000 main_~k~0) .cse1 (<= main_~n~0 1) .cse2))) [2021-02-21 21:24:14,166 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,167 INFO L185 CegarLoopUtils]: At program point L36-1(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,167 INFO L185 CegarLoopUtils]: At program point L36-2(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,167 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,167 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,167 INFO L185 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,167 INFO L192 CegarLoopUtils]: At program point L24(lines 24 52) the Hoare annotation is: true [2021-02-21 21:24:14,168 INFO L185 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,168 INFO L185 CegarLoopUtils]: At program point L49-1(line 49) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 |main_#t~post7|) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,168 INFO L185 CegarLoopUtils]: At program point L49-2(line 49) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= main_~n~0 main_~j~0) (<= 1 main_~i~0) (<= 1999 main_~k~0) (<= 2000 |main_#t~post7|) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,168 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,168 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,169 INFO L192 CegarLoopUtils]: At program point L37-1(line 37) the Hoare annotation is: true [2021-02-21 21:24:14,169 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,169 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,169 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,169 INFO L185 CegarLoopUtils]: At program point L29-2(line 29) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,169 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-21 21:24:14,170 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 52) the Hoare annotation is: true [2021-02-21 21:24:14,170 INFO L185 CegarLoopUtils]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse2 (<= 1 main_~i~0)) (.cse4 (<= main_~n~0 1)) (.cse3 (<= 2000 main_~c2~0)) (.cse5 (<= 10000 main_~c3~0)) (.cse1 (= main_~j~0 0))) (or (and .cse0 .cse1 (<= 2000 main_~k~0) .cse2 .cse3 .cse4 .cse5) (and (<= main_~n~0 main_~j~0) .cse0 .cse2 (<= 1999 main_~k~0) .cse4 .cse3 .cse5) (and (<= main_~n~0 0) (= main_~i~0 0) .cse1))) [2021-02-21 21:24:14,170 INFO L192 CegarLoopUtils]: At program point L46-3(lines 46 50) the Hoare annotation is: true [2021-02-21 21:24:14,170 INFO L185 CegarLoopUtils]: At program point L38(lines 38 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,170 INFO L185 CegarLoopUtils]: At program point L34-2(lines 34 44) the Hoare annotation is: (or (and (<= main_~n~0 0) (= main_~i~0 0)) (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0))) [2021-02-21 21:24:14,171 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,171 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 52) the Hoare annotation is: true [2021-02-21 21:24:14,171 INFO L185 CegarLoopUtils]: At program point L30-1(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,171 INFO L185 CegarLoopUtils]: At program point L30-2(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,171 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (<= 4000 main_~c1~0) [2021-02-21 21:24:14,171 INFO L185 CegarLoopUtils]: At program point L47(line 47) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 2000 main_~k~0) (<= 1 main_~i~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,172 INFO L185 CegarLoopUtils]: At program point L47-1(line 47) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~j~0 0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,172 INFO L185 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,172 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,172 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (= main_~i~0 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,172 INFO L185 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 4000 main_~c1~0) (= main_~k~0 0) (= main_~i~0 0) (= |main_#t~post4| 0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2021-02-21 21:24:14,173 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:24:14,173 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-21 21:24:14,173 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:24:14,173 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:24:14,173 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:24:14,173 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:24:14,174 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:24:14,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:24:14 BoogieIcfgContainer [2021-02-21 21:24:14,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:24:14,197 INFO L168 Benchmark]: Toolchain (without parser) took 8706.80 ms. Allocated memory was 153.1 MB in the beginning and 244.3 MB in the end (delta: 91.2 MB). Free memory was 130.1 MB in the beginning and 187.1 MB in the end (delta: -57.0 MB). Peak memory consumption was 137.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:14,198 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:24:14,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.31 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 119.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:14,199 INFO L168 Benchmark]: Boogie Preprocessor took 52.61 ms. Allocated memory is still 153.1 MB. Free memory was 119.1 MB in the beginning and 117.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:14,200 INFO L168 Benchmark]: RCFGBuilder took 521.31 ms. Allocated memory is still 153.1 MB. Free memory was 117.6 MB in the beginning and 133.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:14,201 INFO L168 Benchmark]: TraceAbstraction took 7842.68 ms. Allocated memory was 153.1 MB in the beginning and 244.3 MB in the end (delta: 91.2 MB). Free memory was 133.3 MB in the beginning and 187.1 MB in the end (delta: -53.8 MB). Peak memory consumption was 140.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:24:14,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 269.31 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 119.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.61 ms. Allocated memory is still 153.1 MB. Free memory was 119.1 MB in the beginning and 117.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 521.31 ms. Allocated memory is still 153.1 MB. Free memory was 117.6 MB in the beginning and 133.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7842.68 ms. Allocated memory was 153.1 MB in the beginning and 244.3 MB in the end (delta: 91.2 MB). Free memory was 133.3 MB in the beginning and 187.1 MB in the end (delta: -53.8 MB). Peak memory consumption was 140.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((4000 <= c1 && k == 0) && i == 0) && 2000 <= c2) && 10000 <= c3) || (((((4000 <= c1 && 1 <= i) && 2000 <= k) && 2000 <= c2) && n <= 1) && 10000 <= c3) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((4000 <= c1 && j == 0) && 2000 <= k) && 1 <= i) && 2000 <= c2) && n <= 1) && 10000 <= c3) || ((((((n <= j && 4000 <= c1) && 1 <= i) && 1999 <= k) && n <= 1) && 2000 <= c2) && 10000 <= c3)) || ((n <= 0 && i == 0) && j == 0) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 624 SDtfs, 981 SDslu, 459 SDs, 0 SdLazy, 2059 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 125 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 63 LocationsWithAnnotation, 112 PreInvPairs, 145 NumberOfFragments, 699 HoareAnnotationTreeSize, 112 FomulaSimplifications, 22904 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 63 FomulaSimplificationsInter, 2427 FormulaSimplificationTreeSizeReductionInter, 1.3s 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...