/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/recursive/recHanoi03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:59:32,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:59:32,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:59:32,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:59:32,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:59:32,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:59:32,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:59:32,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:59:32,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:59:32,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:59:32,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:59:32,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:59:32,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:59:32,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:59:32,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:59:32,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:59:32,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:59:32,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:59:32,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:59:32,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:59:32,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:59:32,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:59:32,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:59:32,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:59:32,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:59:32,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:59:32,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:59:32,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:59:32,681 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 17:59:32,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:59:32,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:59:32,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:59:32,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:59:32,739 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:59:32,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:59:32,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:59:32,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:59:32,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:59:32,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:59:32,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:59:32,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:59:32,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:59:32,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:59:32,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:59:32,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:59:32,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:59:32,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:59:32,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:59:32,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:59:32,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:59:32,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:59:32,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:59:32,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:59:32,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:59:32,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:59:32,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:59:32,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:59:32,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:59:32,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:59:33,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:59:33,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:59:33,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:59:33,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:59:33,233 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:59:33,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-10-23 17:59:33,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9975db1db/40865a76b0b9450d8d1116345fa980ff/FLAG786a1011d [2020-10-23 17:59:33,868 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:59:33,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-10-23 17:59:33,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9975db1db/40865a76b0b9450d8d1116345fa980ff/FLAG786a1011d [2020-10-23 17:59:34,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9975db1db/40865a76b0b9450d8d1116345fa980ff [2020-10-23 17:59:34,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:59:34,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:59:34,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:59:34,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:59:34,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:59:34,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:59:34" (1/1) ... [2020-10-23 17:59:34,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aba8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:59:34, skipping insertion in model container [2020-10-23 17:59:34,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:59:34" (1/1) ... [2020-10-23 17:59:34,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:59:34,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:59:34,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:59:34,464 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:59:34,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:59:34,500 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:59:34,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:59:34 WrapperNode [2020-10-23 17:59:34,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:59:34,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:59:34,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:59:34,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:59:34,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:59:34" (1/1) ... [2020-10-23 17:59:34,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:59:34" (1/1) ... [2020-10-23 17:59:34,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:59:34" (1/1) ... [2020-10-23 17:59:34,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:59:34" (1/1) ... [2020-10-23 17:59:34,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:59:34" (1/1) ... [2020-10-23 17:59:34,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:59:34" (1/1) ... [2020-10-23 17:59:34,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:59:34" (1/1) ... [2020-10-23 17:59:34,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:59:34,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:59:34,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:59:34,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:59:34,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:59:34" (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 17:59:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:59:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:59:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:59:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-10-23 17:59:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:59:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:59:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:59:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:59:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:59:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 17:59:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-10-23 17:59:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:59:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:59:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:59:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:59:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:59:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:59:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:59:34,944 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:59:34,944 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 17:59:34,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:59:34 BoogieIcfgContainer [2020-10-23 17:59:34,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:59:34,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:59:34,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:59:34,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:59:34,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:59:34" (1/3) ... [2020-10-23 17:59:34,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ebc035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:59:34, skipping insertion in model container [2020-10-23 17:59:34,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:59:34" (2/3) ... [2020-10-23 17:59:34,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ebc035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:59:34, skipping insertion in model container [2020-10-23 17:59:34,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:59:34" (3/3) ... [2020-10-23 17:59:34,956 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2020-10-23 17:59:34,969 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:59:34,976 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:59:34,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:59:35,027 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:59:35,027 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:59:35,027 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:59:35,027 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:59:35,028 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:59:35,028 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:59:35,028 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:59:35,028 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:59:35,060 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-23 17:59:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-23 17:59:35,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:59:35,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:59:35,081 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:59:35,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:59:35,092 INFO L82 PathProgramCache]: Analyzing trace with hash -874294957, now seen corresponding path program 1 times [2020-10-23 17:59:35,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:59:35,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613143176] [2020-10-23 17:59:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:59:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:35,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:59:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:35,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:59:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:35,507 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 17:59:35,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613143176] [2020-10-23 17:59:35,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:59:35,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 17:59:35,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770150615] [2020-10-23 17:59:35,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 17:59:35,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:59:35,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 17:59:35,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 17:59:35,534 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2020-10-23 17:59:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:59:35,872 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-23 17:59:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 17:59:35,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-23 17:59:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:59:35,884 INFO L225 Difference]: With dead ends: 39 [2020-10-23 17:59:35,884 INFO L226 Difference]: Without dead ends: 21 [2020-10-23 17:59:35,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-23 17:59:35,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-23 17:59:35,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-23 17:59:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-23 17:59:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-23 17:59:35,939 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2020-10-23 17:59:35,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:59:35,940 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-23 17:59:35,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 17:59:35,940 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-23 17:59:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 17:59:35,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:59:35,942 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:59:35,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:59:35,943 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:59:35,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:59:35,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1992247557, now seen corresponding path program 1 times [2020-10-23 17:59:35,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:59:35,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974950597] [2020-10-23 17:59:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:59:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:36,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:59:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:36,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:59:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:36,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 17:59:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 17:59:36,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974950597] [2020-10-23 17:59:36,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141949397] [2020-10-23 17:59:36,212 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 17:59:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:36,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-23 17:59:36,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:59:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 17:59:36,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:59:36,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-10-23 17:59:36,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328194733] [2020-10-23 17:59:36,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 17:59:36,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:59:36,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 17:59:36,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 17:59:36,590 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 15 states. [2020-10-23 17:59:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:59:36,960 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-10-23 17:59:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 17:59:36,961 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-10-23 17:59:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:59:36,963 INFO L225 Difference]: With dead ends: 29 [2020-10-23 17:59:36,963 INFO L226 Difference]: Without dead ends: 24 [2020-10-23 17:59:36,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-23 17:59:36,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-23 17:59:36,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-23 17:59:36,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-23 17:59:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-23 17:59:36,972 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2020-10-23 17:59:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:59:36,973 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-23 17:59:36,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 17:59:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-23 17:59:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 17:59:36,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:59:36,974 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:59:37,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 17:59:37,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:59:37,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:59:37,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1177737683, now seen corresponding path program 2 times [2020-10-23 17:59:37,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:59:37,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082283257] [2020-10-23 17:59:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:59:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:59:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:37,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:59:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 17:59:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:37,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 17:59:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-23 17:59:37,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082283257] [2020-10-23 17:59:37,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551794951] [2020-10-23 17:59:37,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 17:59:37,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 17:59:37,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:59:37,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-23 17:59:37,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:59:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-23 17:59:37,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:59:37,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2020-10-23 17:59:37,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449289971] [2020-10-23 17:59:37,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-23 17:59:37,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:59:37,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-23 17:59:37,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-23 17:59:37,874 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 19 states. [2020-10-23 17:59:38,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:59:38,768 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-10-23 17:59:38,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 17:59:38,769 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2020-10-23 17:59:38,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:59:38,770 INFO L225 Difference]: With dead ends: 37 [2020-10-23 17:59:38,770 INFO L226 Difference]: Without dead ends: 30 [2020-10-23 17:59:38,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2020-10-23 17:59:38,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-23 17:59:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-23 17:59:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-23 17:59:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-23 17:59:38,786 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 28 [2020-10-23 17:59:38,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:59:38,786 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-23 17:59:38,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-23 17:59:38,787 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-23 17:59:38,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-23 17:59:38,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:59:38,790 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:59:39,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:59:39,005 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:59:39,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:59:39,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1203654061, now seen corresponding path program 3 times [2020-10-23 17:59:39,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:59:39,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306322744] [2020-10-23 17:59:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:59:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:39,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:59:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:59:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:39,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 17:59:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:39,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 17:59:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:39,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 17:59:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:39,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 17:59:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:59:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-23 17:59:39,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306322744] [2020-10-23 17:59:39,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926567070] [2020-10-23 17:59:39,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:59:39,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-23 17:59:39,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:59:39,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-23 17:59:39,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:59:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-23 17:59:40,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-23 17:59:40,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 27 [2020-10-23 17:59:40,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289339666] [2020-10-23 17:59:40,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 17:59:40,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:59:40,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 17:59:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2020-10-23 17:59:40,218 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 14 states. [2020-10-23 17:59:40,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:59:40,285 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-10-23 17:59:40,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 17:59:40,286 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-10-23 17:59:40,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:59:40,287 INFO L225 Difference]: With dead ends: 30 [2020-10-23 17:59:40,287 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 17:59:40,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2020-10-23 17:59:40,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 17:59:40,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 17:59:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 17:59:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 17:59:40,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-10-23 17:59:40,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:59:40,290 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 17:59:40,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 17:59:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 17:59:40,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 17:59:40,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:59:40,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 17:59:40,594 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 17:59:40,595 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 17:59:40,595 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 17:59:40,595 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 17:59:40,595 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 17:59:40,595 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 17:59:40,596 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 17:59:40,596 INFO L274 CegarLoopResult]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2020-10-23 17:59:40,596 INFO L277 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2020-10-23 17:59:40,596 INFO L274 CegarLoopResult]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2020-10-23 17:59:40,596 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2020-10-23 17:59:40,597 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-23 17:59:40,597 INFO L274 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-10-23 17:59:40,597 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 17:59:40,597 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 17:59:40,597 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 17:59:40,597 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 17:59:40,598 INFO L274 CegarLoopResult]: For program point L32(lines 32 36) no Hoare annotation was computed. [2020-10-23 17:59:40,598 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (<= main_~n~0 31) [2020-10-23 17:59:40,598 INFO L274 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-10-23 17:59:40,598 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2020-10-23 17:59:40,598 INFO L274 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-10-23 17:59:40,598 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 26 37) no Hoare annotation was computed. [2020-10-23 17:59:40,599 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 26 37) no Hoare annotation was computed. [2020-10-23 17:59:40,599 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: false [2020-10-23 17:59:40,599 INFO L274 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-10-23 17:59:40,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:59:40 BoogieIcfgContainer [2020-10-23 17:59:40,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:59:40,608 INFO L168 Benchmark]: Toolchain (without parser) took 6355.51 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 126.2 MB in the beginning and 174.8 MB in the end (delta: -48.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. [2020-10-23 17:59:40,608 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:59:40,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 116.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:59:40,610 INFO L168 Benchmark]: Boogie Preprocessor took 34.85 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:59:40,611 INFO L168 Benchmark]: RCFGBuilder took 408.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 102.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 17:59:40,612 INFO L168 Benchmark]: TraceAbstraction took 5657.09 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 101.7 MB in the beginning and 174.8 MB in the end (delta: -73.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:59:40,616 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 116.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.85 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 408.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 102.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5657.09 ms. Allocated memory was 151.0 MB in the beginning and 222.3 MB in the end (delta: 71.3 MB). Free memory was 101.7 MB in the beginning and 174.8 MB in the end (delta: -73.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 60 SDslu, 225 SDs, 0 SdLazy, 455 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 43 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 122 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 189 ConstructedInterpolants, 14 QuantifiedInterpolants, 33297 SizeOfPredicates, 11 NumberOfNonLiveVariables, 401 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 96/140 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...