/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/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:45,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:45,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:45,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:45,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:45,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:45,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:45,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:45,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:45,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:45,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:45,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:45,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:45,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:45,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:45,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:45,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:45,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:45,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:45,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:45,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:45,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:45,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:45,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:45,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:45,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:45,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:45,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:45,741 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 [2020-10-23 18:42:45,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:45,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:45,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:45,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:45,772 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:45,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:45,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:45,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:45,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:45,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:45,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:45,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:45,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:45,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:45,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:45,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:45,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:45,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:45,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:45,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:45,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:45,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:45,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:45,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:45,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:45,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:45,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:45,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:45,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:45,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:46,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:46,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:46,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:46,272 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:46,273 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:46,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-10-23 18:42:46,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/853cb1a07/4039984fbce1459a8b776d1acd38f952/FLAG60283d8a7 [2020-10-23 18:42:47,061 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:47,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-1.c [2020-10-23 18:42:47,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/853cb1a07/4039984fbce1459a8b776d1acd38f952/FLAG60283d8a7 [2020-10-23 18:42:47,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/853cb1a07/4039984fbce1459a8b776d1acd38f952 [2020-10-23 18:42:47,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:47,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:47,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:47,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:47,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:47,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:47" (1/1) ... [2020-10-23 18:42:47,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1c09b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:47, skipping insertion in model container [2020-10-23 18:42:47,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:47" (1/1) ... [2020-10-23 18:42:47,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:47,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:47,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:47,664 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:47,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:47,702 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:47,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:47 WrapperNode [2020-10-23 18:42:47,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:47,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:47,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:47,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:47,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:47" (1/1) ... [2020-10-23 18:42:47,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:47" (1/1) ... [2020-10-23 18:42:47,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:47" (1/1) ... [2020-10-23 18:42:47,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:47" (1/1) ... [2020-10-23 18:42:47,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:47" (1/1) ... [2020-10-23 18:42:47,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:47" (1/1) ... [2020-10-23 18:42:47,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:47" (1/1) ... [2020-10-23 18:42:47,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:47,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:47,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:47,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:47,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:47" (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 [2020-10-23 18:42:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:47,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:47,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:47,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:47,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:47,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:48,180 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:48,181 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:42:48,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:48 BoogieIcfgContainer [2020-10-23 18:42:48,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:48,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:48,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:48,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:48,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:47" (1/3) ... [2020-10-23 18:42:48,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784db044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:48, skipping insertion in model container [2020-10-23 18:42:48,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:47" (2/3) ... [2020-10-23 18:42:48,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784db044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:48, skipping insertion in model container [2020-10-23 18:42:48,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:48" (3/3) ... [2020-10-23 18:42:48,226 INFO L111 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-10-23 18:42:48,239 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:48,244 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:48,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:48,289 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:48,289 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:48,289 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:48,289 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:48,289 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:48,290 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:48,290 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:48,290 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-23 18:42:48,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-23 18:42:48,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:48,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:48,317 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:48,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1934270437, now seen corresponding path program 1 times [2020-10-23 18:42:48,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:48,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378502712] [2020-10-23 18:42:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:48,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378502712] [2020-10-23 18:42:48,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:48,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:48,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424321969] [2020-10-23 18:42:48,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:48,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:48,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:48,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:48,674 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-23 18:42:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:48,811 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-10-23 18:42:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:48,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-23 18:42:48,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:48,842 INFO L225 Difference]: With dead ends: 40 [2020-10-23 18:42:48,842 INFO L226 Difference]: Without dead ends: 16 [2020-10-23 18:42:48,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:48,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-23 18:42:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-23 18:42:48,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-23 18:42:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-10-23 18:42:48,898 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-10-23 18:42:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:48,899 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-10-23 18:42:48,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-10-23 18:42:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-23 18:42:48,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:48,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:48,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:48,901 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:48,902 INFO L82 PathProgramCache]: Analyzing trace with hash 761664538, now seen corresponding path program 1 times [2020-10-23 18:42:48,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:48,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455227165] [2020-10-23 18:42:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:49,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:49,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455227165] [2020-10-23 18:42:49,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:49,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:42:49,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321340194] [2020-10-23 18:42:49,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:42:49,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:49,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:42:49,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:42:49,156 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2020-10-23 18:42:49,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:49,234 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-10-23 18:42:49,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:42:49,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-23 18:42:49,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:49,236 INFO L225 Difference]: With dead ends: 26 [2020-10-23 18:42:49,236 INFO L226 Difference]: Without dead ends: 19 [2020-10-23 18:42:49,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:42:49,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-23 18:42:49,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-10-23 18:42:49,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-23 18:42:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-23 18:42:49,248 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-10-23 18:42:49,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:49,249 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-23 18:42:49,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:42:49,249 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-23 18:42:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-23 18:42:49,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:49,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:49,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:42:49,250 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:49,251 INFO L82 PathProgramCache]: Analyzing trace with hash 726671833, now seen corresponding path program 1 times [2020-10-23 18:42:49,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:49,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892908369] [2020-10-23 18:42:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:49,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:49,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892908369] [2020-10-23 18:42:49,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224910886] [2020-10-23 18:42:49,533 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 [2020-10-23 18:42:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:49,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-23 18:42:49,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:42:49,699 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-23 18:42:49,726 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-23 18:42:49,936 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-23 18:42:50,151 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-10-23 18:42:50,152 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:42:50,310 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 31 [2020-10-23 18:42:50,311 INFO L625 ElimStorePlain]: treesize reduction 298, result has 18.4 percent of original size [2020-10-23 18:42:50,312 INFO L513 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2020-10-23 18:42:50,312 INFO L513 ElimStorePlain]: Eliminatee v_prenex_2 vanished before elimination [2020-10-23 18:42:50,312 INFO L513 ElimStorePlain]: Eliminatee v_prenex_12 vanished before elimination [2020-10-23 18:42:50,323 INFO L545 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 4 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-23 18:42:50,324 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 20 variables, input treesize:369, output treesize:54 [2020-10-23 18:42:50,590 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:42:50,590 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2020-10-23 18:42:50,597 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:42:50,599 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:42:50,601 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-23 18:42:50,649 INFO L625 ElimStorePlain]: treesize reduction 11, result has 80.0 percent of original size [2020-10-23 18:42:50,659 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:42:50,660 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:61, output treesize:3 [2020-10-23 18:42:50,671 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:42:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:50,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:42:50,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-10-23 18:42:50,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152273047] [2020-10-23 18:42:50,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 18:42:50,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:50,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 18:42:50,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:42:50,739 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2020-10-23 18:42:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:51,143 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-10-23 18:42:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:42:51,143 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-10-23 18:42:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:51,144 INFO L225 Difference]: With dead ends: 26 [2020-10-23 18:42:51,145 INFO L226 Difference]: Without dead ends: 19 [2020-10-23 18:42:51,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-10-23 18:42:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-23 18:42:51,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-23 18:42:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-23 18:42:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-23 18:42:51,152 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2020-10-23 18:42:51,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:51,153 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-23 18:42:51,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 18:42:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-23 18:42:51,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-23 18:42:51,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:51,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:51,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 18:42:51,369 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:51,371 INFO L82 PathProgramCache]: Analyzing trace with hash 46613463, now seen corresponding path program 1 times [2020-10-23 18:42:51,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:51,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96378849] [2020-10-23 18:42:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:51,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:51,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96378849] [2020-10-23 18:42:51,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493746307] [2020-10-23 18:42:51,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:42:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:51,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-23 18:42:51,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:42:51,741 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-10-23 18:42:51,741 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:42:51,758 INFO L625 ElimStorePlain]: treesize reduction 5, result has 82.1 percent of original size [2020-10-23 18:42:51,766 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-10-23 18:42:51,767 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-23 18:42:51,801 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:42:51,802 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:42:51,802 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:59, output treesize:5 [2020-10-23 18:42:51,823 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-23 18:42:51,900 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-23 18:42:51,902 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:42:51,904 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:42:51,905 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:42:51,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-10-23 18:42:51,908 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:42:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:51,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:42:51,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2020-10-23 18:42:51,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623230497] [2020-10-23 18:42:51,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 18:42:51,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:51,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 18:42:51,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:42:51,951 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 13 states. [2020-10-23 18:42:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:52,286 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-23 18:42:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:42:52,286 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-23 18:42:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:52,287 INFO L225 Difference]: With dead ends: 19 [2020-10-23 18:42:52,287 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:42:52,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-23 18:42:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:42:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:42:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:42:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:42:52,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-23 18:42:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:52,289 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:42:52,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 18:42:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:42:52,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:42:52,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:42:52,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:42:52,661 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 18:42:52,662 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 18:42:52,662 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 18:42:52,662 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 18:42:52,662 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:42:52,662 INFO L270 CegarLoopResult]: 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)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 18:42:52,663 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:42:52,663 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:42:52,663 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:42:52,663 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:42:52,663 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:42:52,663 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-23 18:42:52,664 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= main_~menor~0 |main_#t~mem12|) (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (= |main_~#array~0.offset| 0) (= main_~SIZE~0 1)) [2020-10-23 18:42:52,664 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-10-23 18:42:52,664 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 31) no Hoare annotation was computed. [2020-10-23 18:42:52,664 INFO L274 CegarLoopResult]: For program point L24(lines 24 25) no Hoare annotation was computed. [2020-10-23 18:42:52,664 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2020-10-23 18:42:52,664 INFO L270 CegarLoopResult]: At program point L21-3(lines 21 26) the Hoare annotation is: (let ((.cse0 (= |main_~#array~0.offset| 0)) (.cse1 (= main_~SIZE~0 1))) (or (and (<= main_~menor~0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) .cse0 .cse1) (and (= main_~j~0 0) .cse0 .cse1))) [2020-10-23 18:42:52,665 INFO L274 CegarLoopResult]: For program point L21-4(lines 21 26) no Hoare annotation was computed. [2020-10-23 18:42:52,665 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 31) no Hoare annotation was computed. [2020-10-23 18:42:52,665 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-23 18:42:52,665 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-23 18:42:52,665 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-23 18:42:52,665 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-23 18:42:52,666 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-23 18:42:52,666 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-23 18:42:52,676 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:42:52,682 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:42:52,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:52 BoogieIcfgContainer [2020-10-23 18:42:52,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:52,687 INFO L168 Benchmark]: Toolchain (without parser) took 5252.88 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 128.0 MB in the beginning and 87.6 MB in the end (delta: 40.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:52,688 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:52,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.06 ms. Allocated memory is still 152.0 MB. Free memory was 127.3 MB in the beginning and 118.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:52,689 INFO L168 Benchmark]: Boogie Preprocessor took 42.40 ms. Allocated memory is still 152.0 MB. Free memory was 118.1 MB in the beginning and 116.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:52,690 INFO L168 Benchmark]: RCFGBuilder took 436.07 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 103.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:52,691 INFO L168 Benchmark]: TraceAbstraction took 4487.00 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 102.6 MB in the beginning and 87.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 46.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:52,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.06 ms. Allocated memory is still 152.0 MB. Free memory was 127.3 MB in the beginning and 118.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.40 ms. Allocated memory is still 152.0 MB. Free memory was 118.1 MB in the beginning and 116.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 436.07 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 103.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4487.00 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 102.6 MB in the beginning and 87.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 46.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant [2020-10-23 18:42:52,703 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 18:42:52,704 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((menor <= unknown-#memory_int-unknown[array][array] && array == 0) && SIZE == 1) || ((j == 0 && array == 0) && SIZE == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 51 SDslu, 121 SDs, 0 SdLazy, 217 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 18 PreInvPairs, 22 NumberOfFragments, 88 HoareAnnotationTreeSize, 18 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 108 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 84 ConstructedInterpolants, 4 QuantifiedInterpolants, 8580 SizeOfPredicates, 14 NumberOfNonLiveVariables, 236 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...