/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/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:26:44,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:26:44,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:26:44,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:26:44,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:26:44,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:26:44,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:26:44,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:26:44,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:26:44,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:26:44,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:26:44,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:26:44,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:26:44,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:26:44,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:26:44,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:26:44,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:26:44,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:26:44,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:26:44,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:26:44,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:26:44,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:26:44,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:26:44,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:26:44,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:26:44,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:26:44,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:26:44,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:26:44,856 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 [2020-11-06 22:26:44,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:26:44,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:26:44,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:26:44,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:26:44,910 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:26:44,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:26:44,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:26:44,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:26:44,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:26:44,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:26:44,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:26:44,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:26:44,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:26:44,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:26:44,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:26:44,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:26:44,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:26:44,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:26:44,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:26:44,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:26:44,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:26:44,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:26:44,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:26:44,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:26:44,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:26:44,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:26:44,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:26:44,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:26:44,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:26:44,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:26:45,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:26:45,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:26:45,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:26:45,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:26:45,325 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:26:45,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-11-06 22:26:45,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b7e38b6d/09f57c72b41547e28efa258ef72a7b4a/FLAG3cea6ce94 [2020-11-06 22:26:45,930 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:26:45,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c [2020-11-06 22:26:45,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b7e38b6d/09f57c72b41547e28efa258ef72a7b4a/FLAG3cea6ce94 [2020-11-06 22:26:46,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b7e38b6d/09f57c72b41547e28efa258ef72a7b4a [2020-11-06 22:26:46,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:26:46,330 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:26:46,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:26:46,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:26:46,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:26:46,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:46" (1/1) ... [2020-11-06 22:26:46,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2314874a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:46, skipping insertion in model container [2020-11-06 22:26:46,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:46" (1/1) ... [2020-11-06 22:26:46,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:26:46,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:26:46,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:26:46,583 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:26:46,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:26:46,619 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:26:46,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:46 WrapperNode [2020-11-06 22:26:46,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:26:46,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:26:46,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:26:46,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:26:46,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:46" (1/1) ... [2020-11-06 22:26:46,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:46" (1/1) ... [2020-11-06 22:26:46,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:46" (1/1) ... [2020-11-06 22:26:46,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:46" (1/1) ... [2020-11-06 22:26:46,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:46" (1/1) ... [2020-11-06 22:26:46,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:46" (1/1) ... [2020-11-06 22:26:46,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:46" (1/1) ... [2020-11-06 22:26:46,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:26:46,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:26:46,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:26:46,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:26:46,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:46" (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 [2020-11-06 22:26:46,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:26:46,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:26:46,744 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:26:46,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:26:46,744 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:26:46,744 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:26:46,745 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:26:46,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:26:46,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:26:46,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:26:46,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:26:46,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:26:46,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:26:46,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:26:46,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:26:46,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:26:47,089 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:26:47,090 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:26:47,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:47 BoogieIcfgContainer [2020-11-06 22:26:47,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:26:47,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:26:47,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:26:47,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:26:47,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:46" (1/3) ... [2020-11-06 22:26:47,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ece6bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:47, skipping insertion in model container [2020-11-06 22:26:47,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:46" (2/3) ... [2020-11-06 22:26:47,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ece6bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:47, skipping insertion in model container [2020-11-06 22:26:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:47" (3/3) ... [2020-11-06 22:26:47,100 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-11-06 22:26:47,116 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:26:47,119 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:26:47,132 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:26:47,162 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:26:47,163 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:26:47,163 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:26:47,163 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:26:47,163 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:26:47,163 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:26:47,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:26:47,164 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:26:47,180 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-11-06 22:26:47,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-06 22:26:47,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:47,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:47,187 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:47,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:47,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1452995030, now seen corresponding path program 1 times [2020-11-06 22:26:47,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:47,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811297066] [2020-11-06 22:26:47,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:47,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:47,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811297066] [2020-11-06 22:26:47,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:47,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:47,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070594016] [2020-11-06 22:26:47,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:47,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:47,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:47,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:47,514 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-11-06 22:26:47,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:47,707 INFO L93 Difference]: Finished difference Result 62 states and 97 transitions. [2020-11-06 22:26:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:47,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-06 22:26:47,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:47,720 INFO L225 Difference]: With dead ends: 62 [2020-11-06 22:26:47,720 INFO L226 Difference]: Without dead ends: 43 [2020-11-06 22:26:47,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-06 22:26:47,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2020-11-06 22:26:47,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-06 22:26:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 51 transitions. [2020-11-06 22:26:47,769 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 51 transitions. Word has length 17 [2020-11-06 22:26:47,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:47,779 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 51 transitions. [2020-11-06 22:26:47,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions. [2020-11-06 22:26:47,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-06 22:26:47,781 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:47,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:47,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:26:47,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:47,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:47,783 INFO L82 PathProgramCache]: Analyzing trace with hash 2133053400, now seen corresponding path program 1 times [2020-11-06 22:26:47,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:47,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533827499] [2020-11-06 22:26:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:47,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:47,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533827499] [2020-11-06 22:26:47,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:47,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:47,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251705495] [2020-11-06 22:26:47,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:47,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:47,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:47,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:47,902 INFO L87 Difference]: Start difference. First operand 32 states and 51 transitions. Second operand 4 states. [2020-11-06 22:26:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:48,035 INFO L93 Difference]: Finished difference Result 69 states and 115 transitions. [2020-11-06 22:26:48,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:48,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-06 22:26:48,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:48,037 INFO L225 Difference]: With dead ends: 69 [2020-11-06 22:26:48,037 INFO L226 Difference]: Without dead ends: 43 [2020-11-06 22:26:48,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-06 22:26:48,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-11-06 22:26:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-06 22:26:48,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 67 transitions. [2020-11-06 22:26:48,049 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 67 transitions. Word has length 17 [2020-11-06 22:26:48,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:48,050 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 67 transitions. [2020-11-06 22:26:48,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:48,050 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 67 transitions. [2020-11-06 22:26:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-06 22:26:48,051 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:48,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:48,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:26:48,051 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:48,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:48,052 INFO L82 PathProgramCache]: Analyzing trace with hash 2099831584, now seen corresponding path program 1 times [2020-11-06 22:26:48,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:48,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846735919] [2020-11-06 22:26:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:48,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:48,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846735919] [2020-11-06 22:26:48,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:48,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:48,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567833454] [2020-11-06 22:26:48,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:48,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:48,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:48,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:48,138 INFO L87 Difference]: Start difference. First operand 42 states and 67 transitions. Second operand 4 states. [2020-11-06 22:26:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:48,287 INFO L93 Difference]: Finished difference Result 65 states and 102 transitions. [2020-11-06 22:26:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:48,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-06 22:26:48,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:48,289 INFO L225 Difference]: With dead ends: 65 [2020-11-06 22:26:48,289 INFO L226 Difference]: Without dead ends: 46 [2020-11-06 22:26:48,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-06 22:26:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-11-06 22:26:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-06 22:26:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 69 transitions. [2020-11-06 22:26:48,301 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 69 transitions. Word has length 18 [2020-11-06 22:26:48,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:48,301 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 69 transitions. [2020-11-06 22:26:48,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 69 transitions. [2020-11-06 22:26:48,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-06 22:26:48,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:48,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:48,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:26:48,303 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:48,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:48,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1706804574, now seen corresponding path program 1 times [2020-11-06 22:26:48,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:48,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298219298] [2020-11-06 22:26:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:48,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:48,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298219298] [2020-11-06 22:26:48,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:48,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:48,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140054706] [2020-11-06 22:26:48,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:48,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:48,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:48,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:48,410 INFO L87 Difference]: Start difference. First operand 45 states and 69 transitions. Second operand 4 states. [2020-11-06 22:26:48,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:48,525 INFO L93 Difference]: Finished difference Result 113 states and 182 transitions. [2020-11-06 22:26:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:48,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-06 22:26:48,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:48,527 INFO L225 Difference]: With dead ends: 113 [2020-11-06 22:26:48,527 INFO L226 Difference]: Without dead ends: 77 [2020-11-06 22:26:48,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-06 22:26:48,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-11-06 22:26:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-06 22:26:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 118 transitions. [2020-11-06 22:26:48,541 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 118 transitions. Word has length 18 [2020-11-06 22:26:48,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:48,541 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 118 transitions. [2020-11-06 22:26:48,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 118 transitions. [2020-11-06 22:26:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-06 22:26:48,543 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:48,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:48,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:26:48,543 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:48,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:48,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1026746204, now seen corresponding path program 1 times [2020-11-06 22:26:48,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:48,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13522509] [2020-11-06 22:26:48,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:48,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:48,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13522509] [2020-11-06 22:26:48,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:48,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:48,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980259281] [2020-11-06 22:26:48,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:48,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:48,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:48,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:48,610 INFO L87 Difference]: Start difference. First operand 76 states and 118 transitions. Second operand 4 states. [2020-11-06 22:26:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:48,706 INFO L93 Difference]: Finished difference Result 96 states and 149 transitions. [2020-11-06 22:26:48,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:48,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-06 22:26:48,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:48,708 INFO L225 Difference]: With dead ends: 96 [2020-11-06 22:26:48,708 INFO L226 Difference]: Without dead ends: 93 [2020-11-06 22:26:48,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-06 22:26:48,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 76. [2020-11-06 22:26:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-06 22:26:48,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 116 transitions. [2020-11-06 22:26:48,727 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 116 transitions. Word has length 18 [2020-11-06 22:26:48,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:48,727 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 116 transitions. [2020-11-06 22:26:48,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:48,727 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 116 transitions. [2020-11-06 22:26:48,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 22:26:48,728 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:48,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:48,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 22:26:48,731 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:48,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:48,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1378003427, now seen corresponding path program 1 times [2020-11-06 22:26:48,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:48,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753414359] [2020-11-06 22:26:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:48,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:48,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753414359] [2020-11-06 22:26:48,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:48,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:48,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053134076] [2020-11-06 22:26:48,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:48,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:48,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:48,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:48,834 INFO L87 Difference]: Start difference. First operand 76 states and 116 transitions. Second operand 4 states. [2020-11-06 22:26:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:48,951 INFO L93 Difference]: Finished difference Result 132 states and 205 transitions. [2020-11-06 22:26:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:48,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-06 22:26:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:48,953 INFO L225 Difference]: With dead ends: 132 [2020-11-06 22:26:48,954 INFO L226 Difference]: Without dead ends: 129 [2020-11-06 22:26:48,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-06 22:26:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 104. [2020-11-06 22:26:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-06 22:26:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 158 transitions. [2020-11-06 22:26:48,967 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 158 transitions. Word has length 19 [2020-11-06 22:26:48,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:48,967 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 158 transitions. [2020-11-06 22:26:48,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:48,968 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 158 transitions. [2020-11-06 22:26:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 22:26:48,969 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:48,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:48,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 22:26:48,970 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:48,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:48,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2058061797, now seen corresponding path program 1 times [2020-11-06 22:26:48,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:48,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733175751] [2020-11-06 22:26:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:49,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733175751] [2020-11-06 22:26:49,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:49,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:49,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586773066] [2020-11-06 22:26:49,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:49,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:49,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:49,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:49,046 INFO L87 Difference]: Start difference. First operand 104 states and 158 transitions. Second operand 4 states. [2020-11-06 22:26:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:49,156 INFO L93 Difference]: Finished difference Result 232 states and 357 transitions. [2020-11-06 22:26:49,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:49,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-06 22:26:49,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:49,159 INFO L225 Difference]: With dead ends: 232 [2020-11-06 22:26:49,159 INFO L226 Difference]: Without dead ends: 137 [2020-11-06 22:26:49,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-06 22:26:49,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2020-11-06 22:26:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-06 22:26:49,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 200 transitions. [2020-11-06 22:26:49,175 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 200 transitions. Word has length 19 [2020-11-06 22:26:49,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:49,176 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 200 transitions. [2020-11-06 22:26:49,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:49,176 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 200 transitions. [2020-11-06 22:26:49,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 22:26:49,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:49,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:49,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 22:26:49,178 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:49,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:49,179 INFO L82 PathProgramCache]: Analyzing trace with hash -224886967, now seen corresponding path program 1 times [2020-11-06 22:26:49,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:49,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169114282] [2020-11-06 22:26:49,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:49,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169114282] [2020-11-06 22:26:49,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:49,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:49,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040755751] [2020-11-06 22:26:49,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:49,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:49,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:49,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:49,262 INFO L87 Difference]: Start difference. First operand 136 states and 200 transitions. Second operand 4 states. [2020-11-06 22:26:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:49,368 INFO L93 Difference]: Finished difference Result 206 states and 303 transitions. [2020-11-06 22:26:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:49,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-06 22:26:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:49,369 INFO L225 Difference]: With dead ends: 206 [2020-11-06 22:26:49,370 INFO L226 Difference]: Without dead ends: 143 [2020-11-06 22:26:49,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-11-06 22:26:49,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2020-11-06 22:26:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-06 22:26:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 204 transitions. [2020-11-06 22:26:49,399 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 204 transitions. Word has length 20 [2020-11-06 22:26:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:49,400 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 204 transitions. [2020-11-06 22:26:49,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 204 transitions. [2020-11-06 22:26:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 22:26:49,401 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:49,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:49,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 22:26:49,402 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:49,402 INFO L82 PathProgramCache]: Analyzing trace with hash -617913977, now seen corresponding path program 1 times [2020-11-06 22:26:49,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:49,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750884566] [2020-11-06 22:26:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:49,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750884566] [2020-11-06 22:26:49,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:49,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:49,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661635103] [2020-11-06 22:26:49,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:49,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:49,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:49,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:49,452 INFO L87 Difference]: Start difference. First operand 142 states and 204 transitions. Second operand 4 states. [2020-11-06 22:26:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:49,546 INFO L93 Difference]: Finished difference Result 238 states and 343 transitions. [2020-11-06 22:26:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:49,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-06 22:26:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:49,548 INFO L225 Difference]: With dead ends: 238 [2020-11-06 22:26:49,548 INFO L226 Difference]: Without dead ends: 235 [2020-11-06 22:26:49,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:49,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-11-06 22:26:49,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 202. [2020-11-06 22:26:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-06 22:26:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 284 transitions. [2020-11-06 22:26:49,562 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 284 transitions. Word has length 20 [2020-11-06 22:26:49,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:49,562 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 284 transitions. [2020-11-06 22:26:49,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:49,562 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 284 transitions. [2020-11-06 22:26:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 22:26:49,564 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:49,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:49,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 22:26:49,565 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:49,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:49,565 INFO L82 PathProgramCache]: Analyzing trace with hash 62144393, now seen corresponding path program 1 times [2020-11-06 22:26:49,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:49,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876070620] [2020-11-06 22:26:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:49,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876070620] [2020-11-06 22:26:49,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:49,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:49,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564951138] [2020-11-06 22:26:49,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:49,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:49,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:49,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:49,619 INFO L87 Difference]: Start difference. First operand 202 states and 284 transitions. Second operand 4 states. [2020-11-06 22:26:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:49,726 INFO L93 Difference]: Finished difference Result 446 states and 623 transitions. [2020-11-06 22:26:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:49,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-06 22:26:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:49,728 INFO L225 Difference]: With dead ends: 446 [2020-11-06 22:26:49,728 INFO L226 Difference]: Without dead ends: 259 [2020-11-06 22:26:49,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:49,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-11-06 22:26:49,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2020-11-06 22:26:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-11-06 22:26:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 344 transitions. [2020-11-06 22:26:49,744 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 344 transitions. Word has length 20 [2020-11-06 22:26:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:49,744 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 344 transitions. [2020-11-06 22:26:49,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 344 transitions. [2020-11-06 22:26:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 22:26:49,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:49,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:49,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 22:26:49,746 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:49,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:49,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1968773776, now seen corresponding path program 1 times [2020-11-06 22:26:49,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:49,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136048020] [2020-11-06 22:26:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:49,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136048020] [2020-11-06 22:26:49,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:49,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:49,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304419482] [2020-11-06 22:26:49,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:49,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:49,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:49,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:49,799 INFO L87 Difference]: Start difference. First operand 258 states and 344 transitions. Second operand 4 states. [2020-11-06 22:26:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:49,922 INFO L93 Difference]: Finished difference Result 386 states and 511 transitions. [2020-11-06 22:26:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:49,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-06 22:26:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:49,924 INFO L225 Difference]: With dead ends: 386 [2020-11-06 22:26:49,924 INFO L226 Difference]: Without dead ends: 267 [2020-11-06 22:26:49,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:49,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-11-06 22:26:49,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2020-11-06 22:26:49,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-06 22:26:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 344 transitions. [2020-11-06 22:26:49,939 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 344 transitions. Word has length 21 [2020-11-06 22:26:49,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:49,939 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 344 transitions. [2020-11-06 22:26:49,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 344 transitions. [2020-11-06 22:26:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 22:26:49,941 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:49,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:49,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-06 22:26:49,941 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:49,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:49,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1933166510, now seen corresponding path program 1 times [2020-11-06 22:26:49,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:49,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933829874] [2020-11-06 22:26:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:49,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:49,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933829874] [2020-11-06 22:26:49,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:49,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:49,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717965442] [2020-11-06 22:26:50,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:50,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:50,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:50,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:50,001 INFO L87 Difference]: Start difference. First operand 266 states and 344 transitions. Second operand 4 states. [2020-11-06 22:26:50,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:50,106 INFO L93 Difference]: Finished difference Result 429 states and 546 transitions. [2020-11-06 22:26:50,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:50,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-06 22:26:50,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:50,109 INFO L225 Difference]: With dead ends: 429 [2020-11-06 22:26:50,109 INFO L226 Difference]: Without dead ends: 426 [2020-11-06 22:26:50,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:50,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-11-06 22:26:50,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 394. [2020-11-06 22:26:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-11-06 22:26:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 496 transitions. [2020-11-06 22:26:50,128 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 496 transitions. Word has length 21 [2020-11-06 22:26:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:50,128 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 496 transitions. [2020-11-06 22:26:50,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 496 transitions. [2020-11-06 22:26:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 22:26:50,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:26:50,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:26:50,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-06 22:26:50,130 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:26:50,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:26:50,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1681742416, now seen corresponding path program 1 times [2020-11-06 22:26:50,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:26:50,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548902661] [2020-11-06 22:26:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:26:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:26:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:26:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:26:50,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548902661] [2020-11-06 22:26:50,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:26:50,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:26:50,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18560109] [2020-11-06 22:26:50,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:26:50,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:26:50,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:26:50,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:26:50,185 INFO L87 Difference]: Start difference. First operand 394 states and 496 transitions. Second operand 4 states. [2020-11-06 22:26:50,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:26:50,290 INFO L93 Difference]: Finished difference Result 858 states and 1056 transitions. [2020-11-06 22:26:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:26:50,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-11-06 22:26:50,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:26:50,292 INFO L225 Difference]: With dead ends: 858 [2020-11-06 22:26:50,292 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:26:50,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:26:50,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:26:50,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:26:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:26:50,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:26:50,294 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-11-06 22:26:50,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:26:50,295 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:26:50,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:26:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:26:50,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:26:50,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-06 22:26:50,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:26:50,638 WARN L194 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 32 [2020-11-06 22:26:50,678 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-11-06 22:26:50,678 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-06 22:26:50,678 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-11-06 22:26:50,678 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-06 22:26:50,679 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:26:50,679 INFO L262 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|)) [2020-11-06 22:26:50,679 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:26:50,679 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:26:50,679 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:26:50,679 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:26:50,679 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:26:50,680 INFO L266 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-11-06 22:26:50,680 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 6 95) no Hoare annotation was computed. [2020-11-06 22:26:50,680 INFO L269 CegarLoopResult]: At program point L85-1(lines 26 90) the Hoare annotation is: true [2020-11-06 22:26:50,680 INFO L266 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-11-06 22:26:50,680 INFO L266 CegarLoopResult]: For program point L65-1(lines 26 90) no Hoare annotation was computed. [2020-11-06 22:26:50,680 INFO L266 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-11-06 22:26:50,680 INFO L266 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-11-06 22:26:50,680 INFO L262 CegarLoopResult]: At program point L86-1(lines 7 95) the Hoare annotation is: false [2020-11-06 22:26:50,681 INFO L266 CegarLoopResult]: For program point L70-1(lines 26 90) no Hoare annotation was computed. [2020-11-06 22:26:50,681 INFO L266 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-11-06 22:26:50,681 INFO L269 CegarLoopResult]: At program point L91(lines 7 95) the Hoare annotation is: true [2020-11-06 22:26:50,681 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 6 95) no Hoare annotation was computed. [2020-11-06 22:26:50,681 INFO L266 CegarLoopResult]: For program point L75-1(lines 26 90) no Hoare annotation was computed. [2020-11-06 22:26:50,681 INFO L266 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-11-06 22:26:50,681 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 6 95) the Hoare annotation is: true [2020-11-06 22:26:50,681 INFO L266 CegarLoopResult]: For program point L59-1(lines 26 90) no Hoare annotation was computed. [2020-11-06 22:26:50,682 INFO L266 CegarLoopResult]: For program point L55-1(lines 26 90) no Hoare annotation was computed. [2020-11-06 22:26:50,682 INFO L266 CegarLoopResult]: For program point L51-1(lines 26 90) no Hoare annotation was computed. [2020-11-06 22:26:50,682 INFO L266 CegarLoopResult]: For program point L80-1(lines 26 90) no Hoare annotation was computed. [2020-11-06 22:26:50,682 INFO L266 CegarLoopResult]: For program point L47-1(lines 26 90) no Hoare annotation was computed. [2020-11-06 22:26:50,682 INFO L266 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-11-06 22:26:50,682 INFO L266 CegarLoopResult]: For program point L43(lines 43 45) no Hoare annotation was computed. [2020-11-06 22:26:50,682 INFO L266 CegarLoopResult]: For program point L43-2(lines 26 90) no Hoare annotation was computed. [2020-11-06 22:26:50,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:50 BoogieIcfgContainer [2020-11-06 22:26:50,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:26:50,695 INFO L168 Benchmark]: Toolchain (without parser) took 4371.64 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 131.5 MB in the beginning and 101.7 MB in the end (delta: 29.8 MB). Peak memory consumption was 102.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:26:50,696 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:26:50,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.82 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 121.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:26:50,697 INFO L168 Benchmark]: Boogie Preprocessor took 38.34 ms. Allocated memory is still 155.2 MB. Free memory was 121.2 MB in the beginning and 119.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:26:50,698 INFO L168 Benchmark]: RCFGBuilder took 431.78 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 135.5 MB in the end (delta: -15.8 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:26:50,699 INFO L168 Benchmark]: TraceAbstraction took 3600.02 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 134.9 MB in the beginning and 101.7 MB in the end (delta: 33.2 MB). Peak memory consumption was 105.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:26:50,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.82 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 121.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.34 ms. Allocated memory is still 155.2 MB. Free memory was 121.2 MB in the beginning and 119.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 431.78 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 135.5 MB in the end (delta: -15.8 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3600.02 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 134.9 MB in the beginning and 101.7 MB in the end (delta: 33.2 MB). Peak memory consumption was 105.2 MB. 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 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 627 SDtfs, 817 SDslu, 102 SDs, 0 SdLazy, 453 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=394occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 125 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 20 PreInvPairs, 55 NumberOfFragments, 38 HoareAnnotationTreeSize, 20 FomulaSimplifications, 52502 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 8 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 14210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 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...