/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-15 23:38:47,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 23:38:47,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 23:38:47,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-15 23:38:47,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-15 23:38:47,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-15 23:38:47,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-15 23:38:47,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-15 23:38:47,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-15 23:38:47,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-15 23:38:47,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-15 23:38:47,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-15 23:38:47,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-15 23:38:47,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-15 23:38:47,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-15 23:38:47,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-15 23:38:47,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-15 23:38:47,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-15 23:38:47,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-15 23:38:47,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-15 23:38:47,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-15 23:38:47,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-15 23:38:47,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-15 23:38:47,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-15 23:38:47,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-15 23:38:47,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-15 23:38:47,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-15 23:38:47,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-15 23:38:47,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-15 23:38:47,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-15 23:38:47,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-15 23:38:47,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-15 23:38:47,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-15 23:38:47,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-15 23:38:47,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-15 23:38:47,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-15 23:38:47,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-15 23:38:47,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-15 23:38:47,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 23:38:47,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 23:38:47,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 23:38:47,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-04-15 23:38:47,633 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 23:38:47,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 23:38:47,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 23:38:47,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 23:38:47,636 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 23:38:47,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 23:38:47,636 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 23:38:47,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 23:38:47,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 23:38:47,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 23:38:47,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 23:38:47,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 23:38:47,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 23:38:47,638 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 23:38:47,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 23:38:47,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 23:38:47,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 23:38:47,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 23:38:47,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 23:38:47,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 23:38:47,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 23:38:47,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 23:38:47,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 23:38:47,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 23:38:47,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 23:38:47,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 23:38:47,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 23:38:47,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-04-15 23:38:47,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 23:38:47,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 23:38:47,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 23:38:47,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 23:38:47,902 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 23:38:47,903 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 23:38:47,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2021-04-15 23:38:47,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/944ef7891/8f0320c1a90746b7b76e72c2d1d2a8cd/FLAG283e5ca36 [2021-04-15 23:38:48,345 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 23:38:48,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2021-04-15 23:38:48,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/944ef7891/8f0320c1a90746b7b76e72c2d1d2a8cd/FLAG283e5ca36 [2021-04-15 23:38:48,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/944ef7891/8f0320c1a90746b7b76e72c2d1d2a8cd [2021-04-15 23:38:48,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 23:38:48,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-15 23:38:48,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 23:38:48,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 23:38:48,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 23:38:48,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 11:38:48" (1/1) ... [2021-04-15 23:38:48,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e745ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 11:38:48, skipping insertion in model container [2021-04-15 23:38:48,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 11:38:48" (1/1) ... [2021-04-15 23:38:48,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 23:38:48,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 23:38:48,517 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.c.i.v+cfa-reducer.c[1110,1123] [2021-04-15 23:38:48,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 23:38:48,525 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 23:38:48,539 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.c.i.v+cfa-reducer.c[1110,1123] [2021-04-15 23:38:48,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 23:38:48,563 INFO L208 MainTranslator]: Completed translation [2021-04-15 23:38:48,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 11:38:48 WrapperNode [2021-04-15 23:38:48,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 23:38:48,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 23:38:48,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 23:38:48,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 23:38:48,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 11:38:48" (1/1) ... [2021-04-15 23:38:48,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 11:38:48" (1/1) ... [2021-04-15 23:38:48,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 11:38:48" (1/1) ... [2021-04-15 23:38:48,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 11:38:48" (1/1) ... [2021-04-15 23:38:48,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 11:38:48" (1/1) ... [2021-04-15 23:38:48,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 11:38:48" (1/1) ... [2021-04-15 23:38:48,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 11:38:48" (1/1) ... [2021-04-15 23:38:48,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 23:38:48,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 23:38:48,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 23:38:48,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 23:38:48,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 11:38:48" (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 [2021-04-15 23:38:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-15 23:38:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 23:38:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-15 23:38:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-15 23:38:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-15 23:38:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-15 23:38:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-15 23:38:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-15 23:38:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 23:38:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-15 23:38:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-15 23:38:48,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-15 23:38:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-15 23:38:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-15 23:38:48,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 23:38:48,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 23:38:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 23:38:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-15 23:38:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 23:38:48,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 23:38:48,896 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-15 23:38:48,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 11:38:48 BoogieIcfgContainer [2021-04-15 23:38:48,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 23:38:48,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 23:38:48,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 23:38:48,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 23:38:48,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 11:38:48" (1/3) ... [2021-04-15 23:38:48,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4744ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 11:38:48, skipping insertion in model container [2021-04-15 23:38:48,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 11:38:48" (2/3) ... [2021-04-15 23:38:48,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4744ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 11:38:48, skipping insertion in model container [2021-04-15 23:38:48,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 11:38:48" (3/3) ... [2021-04-15 23:38:48,901 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2021-04-15 23:38:48,905 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 23:38:48,907 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 23:38:48,918 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-15 23:38:48,931 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 23:38:48,932 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 23:38:48,932 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 23:38:48,932 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 23:38:48,932 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 23:38:48,932 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 23:38:48,932 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 23:38:48,932 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 23:38:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-15 23:38:48,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-15 23:38:48,944 INFO L511 BasicCegarLoop]: Found error trace [2021-04-15 23:38:48,945 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 23:38:48,945 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 23:38:48,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 23:38:48,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1488249160, now seen corresponding path program 1 times [2021-04-15 23:38:48,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 23:38:48,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712407334] [2021-04-15 23:38:48,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 23:38:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 23:38:49,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,082 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-04-15 23:38:49,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-15 23:38:49,102 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-04-15 23:38:49,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-15 23:38:49,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-15 23:38:49,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-15 23:38:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 23:38:49,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 23:38:49,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712407334] [2021-04-15 23:38:49,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 23:38:49,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 23:38:49,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740678582] [2021-04-15 23:38:49,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 23:38:49,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 23:38:49,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 23:38:49,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 23:38:49,179 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-15 23:38:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 23:38:49,403 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-04-15 23:38:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 23:38:49,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-04-15 23:38:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 23:38:49,408 INFO L225 Difference]: With dead ends: 32 [2021-04-15 23:38:49,409 INFO L226 Difference]: Without dead ends: 14 [2021-04-15 23:38:49,410 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 206.1ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-04-15 23:38:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-04-15 23:38:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-04-15 23:38:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-15 23:38:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-04-15 23:38:49,431 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-04-15 23:38:49,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 23:38:49,431 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-04-15 23:38:49,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-15 23:38:49,431 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-04-15 23:38:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-15 23:38:49,432 INFO L511 BasicCegarLoop]: Found error trace [2021-04-15 23:38:49,432 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 23:38:49,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 23:38:49,432 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 23:38:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 23:38:49,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1110855594, now seen corresponding path program 1 times [2021-04-15 23:38:49,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 23:38:49,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780938780] [2021-04-15 23:38:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 23:38:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 23:38:49,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-15 23:38:49,476 INFO L142 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-04-15 23:38:49,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-15 23:38:49,488 INFO L142 QuantifierPusher]: treesize reduction 6, result has 77.8 percent of original size [2021-04-15 23:38:49,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-15 23:38:49,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-15 23:38:49,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-15 23:38:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 23:38:49,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 23:38:49,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780938780] [2021-04-15 23:38:49,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447313813] [2021-04-15 23:38:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 23:38:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 23:38:49,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjunts are in the unsatisfiable core [2021-04-15 23:38:49,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 23:38:49,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-15 23:38:49,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-15 23:38:49,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-15 23:38:49,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-15 23:38:49,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-15 23:38:49,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-15 23:38:49,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-15 23:38:49,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-15 23:38:49,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-15 23:38:49,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,697 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-04-15 23:38:49,697 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-04-15 23:38:49,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-15 23:38:49,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-15 23:38:49,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-15 23:38:49,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-15 23:38:49,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-15 23:38:49,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-15 23:38:49,724 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-15 23:38:49,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 23:38:49,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-15 23:38:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 23:38:49,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 23:38:49,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-04-15 23:38:49,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304160292] [2021-04-15 23:38:49,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-15 23:38:49,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 23:38:49,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-15 23:38:49,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-04-15 23:38:49,729 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-15 23:38:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 23:38:50,028 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-04-15 23:38:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 23:38:50,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-04-15 23:38:50,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 23:38:50,029 INFO L225 Difference]: With dead ends: 17 [2021-04-15 23:38:50,029 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 23:38:50,030 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 351.0ms TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-04-15 23:38:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 23:38:50,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 23:38:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 23:38:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 23:38:50,030 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-04-15 23:38:50,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 23:38:50,030 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 23:38:50,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-15 23:38:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 23:38:50,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 23:38:50,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-04-15 23:38:50,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-15 23:38:50,347 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-04-15 23:38:50,347 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-04-15 23:38:50,347 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-04-15 23:38:50,347 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-04-15 23:38:50,348 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~__return_72~0 |old(~__return_72~0)|) (= |old(#valid)| |#valid|)) [2021-04-15 23:38:50,348 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-04-15 23:38:50,348 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-04-15 23:38:50,348 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-04-15 23:38:50,348 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-15 23:38:50,348 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-04-15 23:38:50,348 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-04-15 23:38:50,348 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-04-15 23:38:50,348 INFO L198 CegarLoopUtils]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-04-15 23:38:50,348 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-04-15 23:38:50,348 INFO L198 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 53) no Hoare annotation was computed. [2021-04-15 23:38:50,348 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 13 70) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2021-04-15 23:38:50,348 INFO L198 CegarLoopUtils]: For program point L25(lines 25 68) no Hoare annotation was computed. [2021-04-15 23:38:50,349 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 13 70) no Hoare annotation was computed. [2021-04-15 23:38:50,349 INFO L198 CegarLoopUtils]: For program point L53(line 53) no Hoare annotation was computed. [2021-04-15 23:38:50,349 INFO L198 CegarLoopUtils]: For program point L19(lines 19 69) no Hoare annotation was computed. [2021-04-15 23:38:50,349 INFO L198 CegarLoopUtils]: For program point L51(lines 51 60) no Hoare annotation was computed. [2021-04-15 23:38:50,349 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 13 70) no Hoare annotation was computed. [2021-04-15 23:38:50,349 INFO L198 CegarLoopUtils]: For program point L44(lines 44 66) no Hoare annotation was computed. [2021-04-15 23:38:50,349 INFO L194 CegarLoopUtils]: At program point L40(lines 30 68) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (= |old(~__return_72~0)| ~__return_72~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-04-15 23:38:50,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 11:38:50 BoogieIcfgContainer [2021-04-15 23:38:50,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 23:38:50,359 INFO L168 Benchmark]: Toolchain (without parser) took 1987.01 ms. Allocated memory is still 202.4 MB. Free memory was 167.6 MB in the beginning and 69.0 MB in the end (delta: 98.6 MB). Peak memory consumption was 97.9 MB. Max. memory is 8.0 GB. [2021-04-15 23:38:50,360 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 202.4 MB. Free memory was 184.3 MB in the beginning and 184.2 MB in the end (delta: 147.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-15 23:38:50,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.62 ms. Allocated memory is still 202.4 MB. Free memory was 167.4 MB in the beginning and 185.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-04-15 23:38:50,360 INFO L168 Benchmark]: Boogie Preprocessor took 41.84 ms. Allocated memory is still 202.4 MB. Free memory was 185.3 MB in the beginning and 184.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-15 23:38:50,361 INFO L168 Benchmark]: RCFGBuilder took 285.71 ms. Allocated memory is still 202.4 MB. Free memory was 184.1 MB in the beginning and 169.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-04-15 23:38:50,361 INFO L168 Benchmark]: TraceAbstraction took 1460.80 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 69.0 MB in the end (delta: 100.0 MB). Peak memory consumption was 101.0 MB. Max. memory is 8.0 GB. [2021-04-15 23:38:50,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 202.4 MB. Free memory was 184.3 MB in the beginning and 184.2 MB in the end (delta: 147.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 190.62 ms. Allocated memory is still 202.4 MB. Free memory was 167.4 MB in the beginning and 185.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.84 ms. Allocated memory is still 202.4 MB. Free memory was 185.3 MB in the beginning and 184.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 285.71 ms. Allocated memory is still 202.4 MB. Free memory was 184.1 MB in the beginning and 169.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1460.80 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 69.0 MB in the end (delta: 100.0 MB). Peak memory consumption was 101.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 53]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1318.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.5ms, AutomataDifference: 540.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 98.1ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 42 SDslu, 52 SDs, 0 SdLazy, 92 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 557.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 60 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 30.1ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 186 FormulaSimplificationTreeSizeReductionInter, 62.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 15.0ms SsaConstructionTime, 57.4ms SatisfiabilityAnalysisTime, 341.7ms InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 245 SizeOfPredicates, 5 NumberOfNonLiveVariables, 121 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (\old(__return_72) == __return_72 && main__j + main__x <= main__i + main__y) && main__i + main__y <= main__j + main__x RESULT: Ultimate proved your program to be correct! Received shutdown request...