/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:49:26,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:49:26,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:49:26,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:49:26,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:49:26,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:49:26,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:49:26,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:49:26,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:49:26,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:49:26,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:49:26,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:49:26,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:49:26,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:49:26,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:49:26,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:49:26,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:49:26,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:49:26,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:49:26,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:49:26,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:49:26,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:49:26,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:49:26,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:49:26,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:49:26,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:49:26,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:49:26,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:49:26,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:49:26,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:49:26,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:49:26,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:49:26,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:49:26,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:49:26,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:49:26,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:49:26,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:49:26,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:49:26,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:49:26,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:49:26,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:49:26,631 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:49:26,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:49:26,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:49:26,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:49:26,646 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:49:26,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:49:26,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:49:26,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:49:26,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:49:26,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:49:26,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:49:26,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:49:26,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:49:26,648 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:49:26,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:49:26,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:49:26,648 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:49:26,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:49:26,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:49:26,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:49:26,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:49:26,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:49:26,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:49:26,650 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:49:26,650 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:49:27,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:49:27,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:49:27,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:49:27,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:49:27,063 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:49:27,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2021-02-24 04:49:27,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91bb8724a/bea8121975804d7a9850333661032b54/FLAG63dc18b14 [2021-02-24 04:49:27,756 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:49:27,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2021-02-24 04:49:27,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91bb8724a/bea8121975804d7a9850333661032b54/FLAG63dc18b14 [2021-02-24 04:49:28,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91bb8724a/bea8121975804d7a9850333661032b54 [2021-02-24 04:49:28,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:49:28,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:49:28,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:49:28,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:49:28,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:49:28,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:49:28" (1/1) ... [2021-02-24 04:49:28,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a834956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:28, skipping insertion in model container [2021-02-24 04:49:28,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:49:28" (1/1) ... [2021-02-24 04:49:28,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:49:28,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:49:28,300 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i[895,908] [2021-02-24 04:49:28,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:49:28,331 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:49:28,351 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i[895,908] [2021-02-24 04:49:28,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:49:28,386 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:49:28,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:28 WrapperNode [2021-02-24 04:49:28,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:49:28,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:49:28,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:49:28,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:49:28,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:28" (1/1) ... [2021-02-24 04:49:28,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:28" (1/1) ... [2021-02-24 04:49:28,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:28" (1/1) ... [2021-02-24 04:49:28,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:28" (1/1) ... [2021-02-24 04:49:28,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:28" (1/1) ... [2021-02-24 04:49:28,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:28" (1/1) ... [2021-02-24 04:49:28,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:28" (1/1) ... [2021-02-24 04:49:28,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:49:28,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:49:28,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:49:28,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:49:28,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:49:28,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:49:28,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:49:28,599 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:49:28,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:49:28,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:49:28,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:49:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:49:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:49:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 04:49:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 04:49:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:49:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:49:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:49:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:49:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:49:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:49:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:49:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:49:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:49:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:49:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:49:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:49:29,135 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:49:29,135 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:49:29,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:49:29 BoogieIcfgContainer [2021-02-24 04:49:29,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:49:29,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:49:29,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:49:29,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:49:29,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:49:28" (1/3) ... [2021-02-24 04:49:29,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a240d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:49:29, skipping insertion in model container [2021-02-24 04:49:29,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:28" (2/3) ... [2021-02-24 04:49:29,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a240d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:49:29, skipping insertion in model container [2021-02-24 04:49:29,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:49:29" (3/3) ... [2021-02-24 04:49:29,147 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2021-02-24 04:49:29,154 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:49:29,159 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:49:29,181 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:49:29,207 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:49:29,207 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:49:29,207 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:49:29,207 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:49:29,207 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:49:29,208 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:49:29,208 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:49:29,208 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:49:29,225 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-24 04:49:29,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-24 04:49:29,236 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:49:29,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:49:29,238 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:49:29,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:49:29,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1564133724, now seen corresponding path program 1 times [2021-02-24 04:49:29,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:49:29,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597061765] [2021-02-24 04:49:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:49:29,340 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:49:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:49:29,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:29,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:29,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:29,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:29,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:49:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:49:29,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:29,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:49:29,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597061765] [2021-02-24 04:49:29,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:49:29,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:49:29,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714151066] [2021-02-24 04:49:29,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:49:29,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:49:29,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:49:29,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:49:29,608 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2021-02-24 04:49:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:49:29,734 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2021-02-24 04:49:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:49:29,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-02-24 04:49:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:49:29,745 INFO L225 Difference]: With dead ends: 57 [2021-02-24 04:49:29,745 INFO L226 Difference]: Without dead ends: 35 [2021-02-24 04:49:29,748 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 [2021-02-24 04:49:29,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-24 04:49:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-02-24 04:49:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-24 04:49:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-02-24 04:49:29,802 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2021-02-24 04:49:29,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:49:29,803 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-02-24 04:49:29,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:49:29,803 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-02-24 04:49:29,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-24 04:49:29,804 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:49:29,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:49:29,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:49:29,805 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:49:29,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:49:29,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1277842214, now seen corresponding path program 1 times [2021-02-24 04:49:29,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:49:29,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991710062] [2021-02-24 04:49:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:49:29,811 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:49:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:49:29,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:29,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:29,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:29,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:49:29,962 WARN L141 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-02-24 04:49:29,966 WARN L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-02-24 04:49:30,007 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-02-24 04:49:30,011 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size 21 [2021-02-24 04:49:30,058 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-24 04:49:30,060 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-24 04:49:30,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:30,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:49:30,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:30,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:49:30,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:30,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:30,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:49:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:49:30,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:30,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:49:30,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991710062] [2021-02-24 04:49:30,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:49:30,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:49:30,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545340810] [2021-02-24 04:49:30,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:49:30,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:49:30,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:49:30,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:49:30,339 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 9 states. [2021-02-24 04:49:30,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:49:30,795 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-02-24 04:49:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 04:49:30,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2021-02-24 04:49:30,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:49:30,797 INFO L225 Difference]: With dead ends: 44 [2021-02-24 04:49:30,797 INFO L226 Difference]: Without dead ends: 38 [2021-02-24 04:49:30,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-02-24 04:49:30,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-24 04:49:30,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-02-24 04:49:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-24 04:49:30,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-02-24 04:49:30,812 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 28 [2021-02-24 04:49:30,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:49:30,812 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-02-24 04:49:30,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:49:30,813 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-02-24 04:49:30,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 04:49:30,814 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:49:30,814 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] [2021-02-24 04:49:30,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:49:30,814 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:49:30,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:49:30,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2110274610, now seen corresponding path program 1 times [2021-02-24 04:49:30,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:49:30,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377392487] [2021-02-24 04:49:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:49:30,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:30,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:49:30,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:30,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:49:30,875 WARN L141 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size [2021-02-24 04:49:30,889 WARN L147 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size 11 [2021-02-24 04:49:30,893 WARN L141 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-02-24 04:49:30,897 WARN L147 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size 30 [2021-02-24 04:49:30,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:30,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:49:30,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:30,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:49:30,912 WARN L141 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size [2021-02-24 04:49:30,915 WARN L147 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size 11 [2021-02-24 04:49:30,918 WARN L141 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-02-24 04:49:30,921 WARN L147 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size 30 [2021-02-24 04:49:30,922 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:49:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:49:31,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:31,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:49:31,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:49:31,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 04:49:31,084 WARN L141 QuantifierPusher]: treesize reduction 37, result has 40.3 percent of original size [2021-02-24 04:49:31,086 WARN L147 QuantifierPusher]: treesize reduction 37, result has 40.3 percent of original size 25 [2021-02-24 04:49:31,119 WARN L141 QuantifierPusher]: treesize reduction 33, result has 38.9 percent of original size [2021-02-24 04:49:31,122 WARN L147 QuantifierPusher]: treesize reduction 33, result has 38.9 percent of original size 21 [2021-02-24 04:49:31,155 WARN L141 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size [2021-02-24 04:49:31,159 WARN L147 QuantifierPusher]: treesize reduction 30, result has 23.1 percent of original size 9 [2021-02-24 04:49:31,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:49:31,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:49:31,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:31,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:49:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:49:31,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:49:31,303 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-02-24 04:49:31,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:49:31,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-02-24 04:49:31,324 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size 42 [2021-02-24 04:49:31,329 WARN L141 QuantifierPusher]: treesize reduction 1, result has 98.1 percent of original size [2021-02-24 04:49:31,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:49:31,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-24 04:49:31,345 WARN L147 QuantifierPusher]: treesize reduction 1, result has 98.1 percent of original size 52 [2021-02-24 04:49:31,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:49:31,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:49:31,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:49:31,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:49:31,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 04:49:31,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 04:49:31,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:49:31,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:31,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:31,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377392487] [2021-02-24 04:49:31,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:49:31,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-24 04:49:31,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138713824] [2021-02-24 04:49:31,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 04:49:31,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:49:31,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 04:49:31,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:49:31,653 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 16 states. [2021-02-24 04:49:32,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:49:32,631 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-02-24 04:49:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 04:49:32,631 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2021-02-24 04:49:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:49:32,633 INFO L225 Difference]: With dead ends: 38 [2021-02-24 04:49:32,633 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:49:32,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2021-02-24 04:49:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:49:32,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:49:32,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:49:32,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:49:32,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-02-24 04:49:32,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:49:32,637 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:49:32,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 04:49:32,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:49:32,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:49:32,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:49:32,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:49:33,026 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 30 [2021-02-24 04:49:33,501 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 04:49:33,502 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 04:49:33,502 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 04:49:33,502 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 04:49:33,502 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 04:49:33,502 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:49:33,503 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:49:33,503 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 04:49:33,503 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 04:49:33,503 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 04:49:33,503 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 04:49:33,503 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)|)) [2021-02-24 04:49:33,504 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 04:49:33,504 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:49:33,504 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:49:33,504 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:49:33,504 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:49:33,504 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:49:33,505 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-24 04:49:33,505 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-24 04:49:33,505 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-24 04:49:33,505 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-24 04:49:33,505 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-24 04:49:33,505 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (not (= (+ main_~x~0 1) 0)) (<= .cse1 .cse0))) [2021-02-24 04:49:33,506 INFO L185 CegarLoopUtils]: At program point L33-1(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (not (= (+ main_~x~0 1) 0)) (= |main_#t~post6| main_~y~0) (<= .cse1 .cse0))) [2021-02-24 04:49:33,506 INFO L185 CegarLoopUtils]: At program point L33-2(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 |main_#t~post6|)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (not (= (+ main_~x~0 1) 0)) (= |main_#t~post6| (+ main_~y~0 1)) (<= .cse1 .cse0))) [2021-02-24 04:49:33,506 INFO L192 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-02-24 04:49:33,506 INFO L185 CegarLoopUtils]: At program point L31-2(lines 31 34) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0))) (or (let ((.cse0 (+ main_~i~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0))) (let ((.cse2 (+ main_~y~0 main_~i~0))) (and (<= .cse1 .cse2) (not (= (+ main_~x~0 1) 0)) (<= .cse2 .cse1))))) [2021-02-24 04:49:33,507 INFO L185 CegarLoopUtils]: At program point L31-3(lines 24 39) the Hoare annotation is: (let ((.cse2 (< 0 (+ main_~y~0 1))) (.cse1 (+ main_~i~0 main_~y~0)) (.cse5 (<= main_~y~0 0))) (let ((.cse3 (or (<= .cse1 main_~j~0) .cse5)) (.cse0 (+ main_~x~0 main_~j~0)) (.cse4 (or (<= main_~j~0 .cse1) .cse2))) (or (and (or (<= .cse0 .cse1) .cse2) .cse3 .cse4 (or (<= .cse1 .cse0) .cse5) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) (let ((.cse6 (+ main_~y~0 main_~i~0))) (and .cse3 (<= .cse0 .cse6) (not (= (+ main_~x~0 1) 0)) (<= .cse6 .cse0) .cse4))))) [2021-02-24 04:49:33,507 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-24 04:49:33,507 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-24 04:49:33,507 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-24 04:49:33,507 INFO L192 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: true [2021-02-24 04:49:33,507 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 39) the Hoare annotation is: true [2021-02-24 04:49:33,508 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 39) the Hoare annotation is: true [2021-02-24 04:49:33,508 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (<= main_~y~0 0)) (.cse1 (< 0 (+ main_~y~0 1)))) (or (and .cse0 (<= main_~i~0 main_~x~0) .cse1 (<= main_~x~0 main_~i~0)) (let ((.cse3 (+ main_~y~0 main_~i~0)) (.cse2 (+ main_~x~0 main_~j~0))) (and (<= .cse2 .cse3) (not (= (+ main_~x~0 1) 0)) (<= .cse3 .cse2) .cse0 .cse1)))) [2021-02-24 04:49:33,508 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse2 (not (= main_~x~0 0)))) (or (let ((.cse0 (+ main_~i~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= main_~i~0 main_~x~0) .cse2 (<= main_~x~0 main_~i~0))) (let ((.cse3 (+ main_~y~0 main_~i~0))) (and (<= .cse1 .cse3) (not (= (+ main_~x~0 1) 0)) (<= .cse3 .cse1) .cse2)))) [2021-02-24 04:49:33,508 INFO L185 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: (let ((.cse0 (= |main_#t~post5| main_~x~0)) (.cse2 (+ main_~x~0 main_~j~0)) (.cse3 (not (= main_~x~0 0)))) (or (let ((.cse1 (+ main_~i~0 main_~y~0))) (and .cse0 (<= .cse1 .cse2) (<= .cse2 .cse1) (<= main_~i~0 main_~x~0) .cse3 (<= main_~x~0 main_~i~0))) (let ((.cse4 (+ main_~y~0 main_~i~0))) (and .cse0 (<= .cse2 .cse4) (not (= (+ main_~x~0 1) 0)) (<= .cse4 .cse2) .cse3)))) [2021-02-24 04:49:33,508 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (and (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) [2021-02-24 04:49:33,509 INFO L185 CegarLoopUtils]: At program point L32-2(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~j~0 |main_#t~post5|))) (and (= |main_#t~post5| (+ main_~x~0 1)) (<= .cse0 .cse1) (<= .cse1 .cse0) (not (= |main_#t~post5| 0)))) [2021-02-24 04:49:33,509 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 39) the Hoare annotation is: true [2021-02-24 04:49:33,509 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-24 04:49:33,509 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-24 04:49:33,509 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-24 04:49:33,509 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-24 04:49:33,510 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-24 04:49:33,510 INFO L192 CegarLoopUtils]: At program point L35(lines 35 37) the Hoare annotation is: true [2021-02-24 04:49:33,510 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-02-24 04:49:33,510 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-24 04:49:33,510 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-02-24 04:49:33,510 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:49:33,511 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:49:33,511 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))) [2021-02-24 04:49:33,511 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:49:33,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:49:33 BoogieIcfgContainer [2021-02-24 04:49:33,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:49:33,539 INFO L168 Benchmark]: Toolchain (without parser) took 5435.72 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.6 MB in the beginning and 77.7 MB in the end (delta: 49.9 MB). Peak memory consumption was 99.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:33,539 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:49:33,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.87 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:33,540 INFO L168 Benchmark]: Boogie Preprocessor took 65.92 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:33,541 INFO L168 Benchmark]: RCFGBuilder took 676.48 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 130.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:33,542 INFO L168 Benchmark]: TraceAbstraction took 4398.46 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.5 MB in the beginning and 77.7 MB in the end (delta: 52.8 MB). Peak memory consumption was 102.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:33,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 269.87 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.92 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 676.48 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 130.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4398.46 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.5 MB in the beginning and 77.7 MB in the end (delta: 52.8 MB). Peak memory consumption was 102.9 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: 31]: Loop Invariant Derived loop invariant: (((i + y <= x + j && x + j <= i + y) && i <= x) && x <= i) || ((x + j <= y + i && !(x + 1 == 0)) && y + i <= x + j) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 105 SDslu, 200 SDs, 0 SdLazy, 384 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 58 PreInvPairs, 74 NumberOfFragments, 468 HoareAnnotationTreeSize, 58 FomulaSimplifications, 348 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 44 FomulaSimplificationsInter, 813 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...