/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/array-fpi/s1iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:43,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:43,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:43,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:43,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:43,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:43,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:43,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:43,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:43,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:43,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:43,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:43,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:43,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:43,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:43,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:43,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:43,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:43,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:43,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:43,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:43,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:43,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:43,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:43,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:43,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:43,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:43,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:43,587 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 04:46:43,601 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:43,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:43,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:43,603 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:43,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:43,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:43,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:43,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:43,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:43,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:43,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:43,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:43,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:43,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:43,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:43,606 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:43,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:43,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:43,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:43,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:43,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:43,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:43,607 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:43,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:43,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:44,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:44,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:44,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:44,032 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:44,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1iff.c [2021-02-24 04:46:44,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d5f122d/4b8da9b1d38f443ab33013d50124f393/FLAGa4b2d9ec9 [2021-02-24 04:46:44,775 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:44,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1iff.c [2021-02-24 04:46:44,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d5f122d/4b8da9b1d38f443ab33013d50124f393/FLAGa4b2d9ec9 [2021-02-24 04:46:45,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d5f122d/4b8da9b1d38f443ab33013d50124f393 [2021-02-24 04:46:45,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:45,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:45,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:45,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:45,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:45,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:45" (1/1) ... [2021-02-24 04:46:45,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19536169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:45, skipping insertion in model container [2021-02-24 04:46:45,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:45" (1/1) ... [2021-02-24 04:46:45,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:45,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:45,448 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1iff.c[588,601] [2021-02-24 04:46:45,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:45,486 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:45,499 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1iff.c[588,601] [2021-02-24 04:46:45,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:45,524 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:45,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:45 WrapperNode [2021-02-24 04:46:45,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:45,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:45,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:45,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:45,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:45" (1/1) ... [2021-02-24 04:46:45,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:45" (1/1) ... [2021-02-24 04:46:45,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:45" (1/1) ... [2021-02-24 04:46:45,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:45" (1/1) ... [2021-02-24 04:46:45,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:45" (1/1) ... [2021-02-24 04:46:45,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:45" (1/1) ... [2021-02-24 04:46:45,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:45" (1/1) ... [2021-02-24 04:46:45,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:45,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:45,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:45,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:45,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:45" (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 04:46:45,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:45,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:45,696 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:45,696 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:45,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:45,696 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:45,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:45,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:46,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:46,095 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 04:46:46,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:46 BoogieIcfgContainer [2021-02-24 04:46:46,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:46,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:46,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:46,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:46,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:45" (1/3) ... [2021-02-24 04:46:46,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc2a32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:46, skipping insertion in model container [2021-02-24 04:46:46,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:45" (2/3) ... [2021-02-24 04:46:46,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc2a32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:46, skipping insertion in model container [2021-02-24 04:46:46,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:46" (3/3) ... [2021-02-24 04:46:46,107 INFO L111 eAbstractionObserver]: Analyzing ICFG s1iff.c [2021-02-24 04:46:46,114 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:46,119 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:46,138 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:46,162 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:46,162 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:46,163 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:46,163 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:46,163 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:46,163 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:46,163 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:46,163 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-24 04:46:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:46:46,189 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:46,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:46,190 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:46,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:46,196 INFO L82 PathProgramCache]: Analyzing trace with hash 137751759, now seen corresponding path program 1 times [2021-02-24 04:46:46,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:46,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009948985] [2021-02-24 04:46:46,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:46,276 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:46,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:46,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:46,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:46,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:46,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:46,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:46,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:46,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:46,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:46,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009948985] [2021-02-24 04:46:46,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:46,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:46,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912955095] [2021-02-24 04:46:46,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:46,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:46,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:46,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:46,582 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2021-02-24 04:46:46,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:46,761 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-02-24 04:46:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:46,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-24 04:46:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:46,772 INFO L225 Difference]: With dead ends: 119 [2021-02-24 04:46:46,773 INFO L226 Difference]: Without dead ends: 58 [2021-02-24 04:46:46,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 04:46:46,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-24 04:46:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-24 04:46:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-24 04:46:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-02-24 04:46:46,829 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 36 [2021-02-24 04:46:46,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:46,830 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-02-24 04:46:46,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-02-24 04:46:46,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:46:46,832 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:46,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:46,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:46,832 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:46,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1632327928, now seen corresponding path program 1 times [2021-02-24 04:46:46,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:46,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908407187] [2021-02-24 04:46:46,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:46,838 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:46,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:46,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:46,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:46,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:46,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:46,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:46,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:46,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:46,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:46,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:46,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:47,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:47,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:47,007 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 04:46:47,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908407187] [2021-02-24 04:46:47,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:47,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:47,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096886752] [2021-02-24 04:46:47,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:47,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:47,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:47,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:47,012 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2021-02-24 04:46:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:47,245 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-02-24 04:46:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:47,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-24 04:46:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:47,248 INFO L225 Difference]: With dead ends: 104 [2021-02-24 04:46:47,248 INFO L226 Difference]: Without dead ends: 79 [2021-02-24 04:46:47,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:46:47,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-24 04:46:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2021-02-24 04:46:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-24 04:46:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-24 04:46:47,266 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 36 [2021-02-24 04:46:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:47,267 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-24 04:46:47,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-24 04:46:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 04:46:47,269 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:47,269 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:47,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:47,270 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:47,271 INFO L82 PathProgramCache]: Analyzing trace with hash -881259695, now seen corresponding path program 1 times [2021-02-24 04:46:47,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:47,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45050222] [2021-02-24 04:46:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:47,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:47,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:47,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:47,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:47,327 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:47,342 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:47,348 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:47,351 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:47,352 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:47,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:47,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:47,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:47,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:47,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:47,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:46:47,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:47,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:46:47,584 WARN L141 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size [2021-02-24 04:46:47,585 WARN L147 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-02-24 04:46:47,604 WARN L141 QuantifierPusher]: treesize reduction 15, result has 59.5 percent of original size [2021-02-24 04:46:47,605 WARN L147 QuantifierPusher]: treesize reduction 15, result has 59.5 percent of original size 22 [2021-02-24 04:46:47,629 WARN L141 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-02-24 04:46:47,631 WARN L147 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size 34 [2021-02-24 04:46:47,668 WARN L141 QuantifierPusher]: treesize reduction 16, result has 73.8 percent of original size [2021-02-24 04:46:47,670 WARN L147 QuantifierPusher]: treesize reduction 16, result has 73.8 percent of original size 45 [2021-02-24 04:46:47,713 WARN L141 QuantifierPusher]: treesize reduction 16, result has 73.8 percent of original size [2021-02-24 04:46:47,715 WARN L147 QuantifierPusher]: treesize reduction 16, result has 73.8 percent of original size 45 [2021-02-24 04:46:47,757 WARN L141 QuantifierPusher]: treesize reduction 30, result has 57.7 percent of original size [2021-02-24 04:46:47,759 WARN L147 QuantifierPusher]: treesize reduction 30, result has 57.7 percent of original size 41 [2021-02-24 04:46:47,805 WARN L141 QuantifierPusher]: treesize reduction 39, result has 50.6 percent of original size [2021-02-24 04:46:47,808 WARN L147 QuantifierPusher]: treesize reduction 39, result has 50.6 percent of original size 40 [2021-02-24 04:46:47,852 WARN L141 QuantifierPusher]: treesize reduction 16, result has 69.2 percent of original size [2021-02-24 04:46:47,853 WARN L147 QuantifierPusher]: treesize reduction 16, result has 69.2 percent of original size 36 [2021-02-24 04:46:47,893 WARN L141 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-02-24 04:46:47,894 WARN L147 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size 32 [2021-02-24 04:46:47,936 WARN L141 QuantifierPusher]: treesize reduction 12, result has 75.0 percent of original size [2021-02-24 04:46:47,938 WARN L147 QuantifierPusher]: treesize reduction 12, result has 75.0 percent of original size 36 [2021-02-24 04:46:47,989 WARN L141 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size [2021-02-24 04:46:47,991 WARN L147 QuantifierPusher]: treesize reduction 13, result has 71.1 percent of original size 32 [2021-02-24 04:46:48,029 WARN L141 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size [2021-02-24 04:46:48,030 WARN L147 QuantifierPusher]: treesize reduction 13, result has 68.3 percent of original size 28 [2021-02-24 04:46:48,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:48,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:46:48,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:48,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:48,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:48,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:48,168 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 04:46:48,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:48,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 04:46:48,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 04:46:48,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:48,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-24 04:46:48,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 04:46:48,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:48,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 04:46:48,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-24 04:46:48,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:48,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 04:46:48,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-24 04:46:48,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:48,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-24 04:46:48,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-02-24 04:46:48,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:48,525 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size [2021-02-24 04:46:48,526 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-02-24 04:46:48,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-24 04:46:48,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:48,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:48,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45050222] [2021-02-24 04:46:48,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:48,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-24 04:46:48,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526234877] [2021-02-24 04:46:48,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-24 04:46:48,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:48,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-24 04:46:48,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=523, Unknown=26, NotChecked=0, Total=650 [2021-02-24 04:46:48,615 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 24 states. [2021-02-24 04:46:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:50,740 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2021-02-24 04:46:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-24 04:46:50,741 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2021-02-24 04:46:50,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:50,745 INFO L225 Difference]: With dead ends: 135 [2021-02-24 04:46:50,745 INFO L226 Difference]: Without dead ends: 125 [2021-02-24 04:46:50,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=330, Invalid=1791, Unknown=41, NotChecked=0, Total=2162 [2021-02-24 04:46:50,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-02-24 04:46:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 78. [2021-02-24 04:46:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 04:46:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-02-24 04:46:50,770 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 53 [2021-02-24 04:46:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:50,770 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-02-24 04:46:50,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-24 04:46:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-02-24 04:46:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-24 04:46:50,773 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:50,773 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:50,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:50,773 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:50,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:50,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1439750208, now seen corresponding path program 2 times [2021-02-24 04:46:50,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:50,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169494057] [2021-02-24 04:46:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:50,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:50,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:50,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:50,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:50,788 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:50,790 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:50,793 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:50,795 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:50,795 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:50,854 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:50,909 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:50,958 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:46:50,958 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:50,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:46:50,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:50 BoogieIcfgContainer [2021-02-24 04:46:50,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:50,988 INFO L168 Benchmark]: Toolchain (without parser) took 5828.98 ms. Allocated memory was 165.7 MB in the beginning and 206.6 MB in the end (delta: 40.9 MB). Free memory was 142.4 MB in the beginning and 142.7 MB in the end (delta: -301.8 kB). Peak memory consumption was 41.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:50,989 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 165.7 MB. Free memory is still 138.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:50,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.00 ms. Allocated memory is still 165.7 MB. Free memory was 141.4 MB in the beginning and 131.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:50,995 INFO L168 Benchmark]: Boogie Preprocessor took 40.75 ms. Allocated memory is still 165.7 MB. Free memory was 131.4 MB in the beginning and 129.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:50,996 INFO L168 Benchmark]: RCFGBuilder took 530.08 ms. Allocated memory is still 165.7 MB. Free memory was 129.6 MB in the beginning and 145.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:51,000 INFO L168 Benchmark]: TraceAbstraction took 4884.69 ms. Allocated memory was 165.7 MB in the beginning and 206.6 MB in the end (delta: 40.9 MB). Free memory was 145.1 MB in the beginning and 142.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:51,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 165.7 MB. Free memory is still 138.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 349.00 ms. Allocated memory is still 165.7 MB. Free memory was 141.4 MB in the beginning and 131.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.75 ms. Allocated memory is still 165.7 MB. Free memory was 131.4 MB in the beginning and 129.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 530.08 ms. Allocated memory is still 165.7 MB. Free memory was 129.6 MB in the beginning and 145.6 MB in the end (delta: -16.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4884.69 ms. Allocated memory was 165.7 MB in the beginning and 206.6 MB in the end (delta: 40.9 MB). Free memory was 145.1 MB in the beginning and 142.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i