/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:59:13,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:59:13,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:59:13,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 00:59:13,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 00:59:13,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 00:59:13,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 00:59:13,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 00:59:13,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 00:59:13,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 00:59:13,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 00:59:13,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 00:59:13,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:59:13,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:59:13,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:59:13,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:59:13,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:59:13,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:59:13,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:59:13,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:59:13,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:59:13,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:59:13,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:59:13,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:59:13,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 00:59:13,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 00:59:13,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 00:59:13,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 00:59:13,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 00:59:13,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 00:59:13,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 00:59:13,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 00:59:13,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 00:59:13,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 00:59:13,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 00:59:13,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 00:59:13,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 00:59:13,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 00:59:13,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 00:59:13,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 00:59:13,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 00:59:13,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:59:13,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:59:13,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:59:13,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:59:13,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:59:13,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:59:13,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:59:13,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:59:13,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:59:13,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:59:13,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:59:13,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:59:13,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:59:13,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:59:13,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:59:13,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:59:13,750 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:59:13,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:59:13,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:59:13,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:59:13,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:59:13,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:59:13,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:59:13,751 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:59:14,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:59:14,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:59:14,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:59:14,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:59:14,166 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:59:14,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-10-24 00:59:14,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/183e08522/2609c527f2d345a49a1c2e056ba3f0d6/FLAG81869bc08 [2020-10-24 00:59:14,952 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:59:14,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c [2020-10-24 00:59:14,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/183e08522/2609c527f2d345a49a1c2e056ba3f0d6/FLAG81869bc08 [2020-10-24 00:59:15,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/183e08522/2609c527f2d345a49a1c2e056ba3f0d6 [2020-10-24 00:59:15,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:59:15,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:59:15,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:59:15,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:59:15,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:59:15,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:59:15" (1/1) ... [2020-10-24 00:59:15,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79698961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:15, skipping insertion in model container [2020-10-24 00:59:15,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:59:15" (1/1) ... [2020-10-24 00:59:15,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:59:15,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:59:15,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:59:15,610 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:59:15,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:59:15,650 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:59:15,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:15 WrapperNode [2020-10-24 00:59:15,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:59:15,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:59:15,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:59:15,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:59:15,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:15" (1/1) ... [2020-10-24 00:59:15,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:15" (1/1) ... [2020-10-24 00:59:15,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:15" (1/1) ... [2020-10-24 00:59:15,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:15" (1/1) ... [2020-10-24 00:59:15,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:15" (1/1) ... [2020-10-24 00:59:15,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:15" (1/1) ... [2020-10-24 00:59:15,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:15" (1/1) ... [2020-10-24 00:59:15,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:59:15,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:59:15,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:59:15,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:59:15,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:15" (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 [2020-10-24 00:59:15,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:59:15,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:59:15,799 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:59:15,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:59:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:59:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:59:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:59:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:59:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 00:59:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:59:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:59:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:59:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:59:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:59:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:59:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:59:16,300 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:59:16,300 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 00:59:16,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:59:16 BoogieIcfgContainer [2020-10-24 00:59:16,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:59:16,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:59:16,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:59:16,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:59:16,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:59:15" (1/3) ... [2020-10-24 00:59:16,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64366080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:59:16, skipping insertion in model container [2020-10-24 00:59:16,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:15" (2/3) ... [2020-10-24 00:59:16,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64366080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:59:16, skipping insertion in model container [2020-10-24 00:59:16,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:59:16" (3/3) ... [2020-10-24 00:59:16,312 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-10-24 00:59:16,326 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:59:16,331 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:59:16,345 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:59:16,373 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:59:16,374 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:59:16,374 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:59:16,374 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:59:16,374 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:59:16,374 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:59:16,375 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:59:16,375 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:59:16,393 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-10-24 00:59:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-24 00:59:16,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:16,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:16,407 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:16,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:16,414 INFO L82 PathProgramCache]: Analyzing trace with hash -598530795, now seen corresponding path program 1 times [2020-10-24 00:59:16,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:16,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823683385] [2020-10-24 00:59:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:16,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:59:16,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823683385] [2020-10-24 00:59:16,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:59:16,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:59:16,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491183447] [2020-10-24 00:59:16,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:59:16,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:16,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:59:16,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:59:16,914 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-10-24 00:59:17,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:17,317 INFO L93 Difference]: Finished difference Result 159 states and 212 transitions. [2020-10-24 00:59:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:59:17,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-24 00:59:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:17,332 INFO L225 Difference]: With dead ends: 159 [2020-10-24 00:59:17,332 INFO L226 Difference]: Without dead ends: 104 [2020-10-24 00:59:17,336 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 [2020-10-24 00:59:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-24 00:59:17,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-24 00:59:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-24 00:59:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2020-10-24 00:59:17,423 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 52 [2020-10-24 00:59:17,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:17,424 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2020-10-24 00:59:17,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:59:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2020-10-24 00:59:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-24 00:59:17,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:17,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:17,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:59:17,433 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:17,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1160567619, now seen corresponding path program 1 times [2020-10-24 00:59:17,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:17,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758522991] [2020-10-24 00:59:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:17,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:59:17,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758522991] [2020-10-24 00:59:17,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:59:17,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:59:17,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382927003] [2020-10-24 00:59:17,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:59:17,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:17,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:59:17,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:59:17,602 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand 4 states. [2020-10-24 00:59:18,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:18,040 INFO L93 Difference]: Finished difference Result 125 states and 158 transitions. [2020-10-24 00:59:18,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:59:18,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-24 00:59:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:18,048 INFO L225 Difference]: With dead ends: 125 [2020-10-24 00:59:18,048 INFO L226 Difference]: Without dead ends: 122 [2020-10-24 00:59:18,049 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 [2020-10-24 00:59:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-24 00:59:18,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2020-10-24 00:59:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-24 00:59:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2020-10-24 00:59:18,091 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 128 transitions. Word has length 53 [2020-10-24 00:59:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:18,091 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 128 transitions. [2020-10-24 00:59:18,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:59:18,092 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2020-10-24 00:59:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-24 00:59:18,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:18,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:18,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:59:18,094 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:18,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:18,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1366976914, now seen corresponding path program 1 times [2020-10-24 00:59:18,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:18,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462272473] [2020-10-24 00:59:18,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:18,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:59:18,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462272473] [2020-10-24 00:59:18,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:59:18,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:59:18,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663701854] [2020-10-24 00:59:18,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:59:18,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:18,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:59:18,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:59:18,274 INFO L87 Difference]: Start difference. First operand 103 states and 128 transitions. Second operand 4 states. [2020-10-24 00:59:18,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:18,614 INFO L93 Difference]: Finished difference Result 235 states and 309 transitions. [2020-10-24 00:59:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:59:18,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-24 00:59:18,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:18,622 INFO L225 Difference]: With dead ends: 235 [2020-10-24 00:59:18,622 INFO L226 Difference]: Without dead ends: 165 [2020-10-24 00:59:18,623 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 [2020-10-24 00:59:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-24 00:59:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2020-10-24 00:59:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-24 00:59:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2020-10-24 00:59:18,693 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 53 [2020-10-24 00:59:18,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:18,696 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2020-10-24 00:59:18,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:59:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2020-10-24 00:59:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-24 00:59:18,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:18,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:18,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 00:59:18,703 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:18,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:18,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1329559813, now seen corresponding path program 1 times [2020-10-24 00:59:18,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:18,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191995018] [2020-10-24 00:59:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:18,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:59:18,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191995018] [2020-10-24 00:59:18,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:59:18,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:59:18,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568082801] [2020-10-24 00:59:18,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:59:18,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:18,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:59:18,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:59:18,794 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand 4 states. [2020-10-24 00:59:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:19,045 INFO L93 Difference]: Finished difference Result 200 states and 256 transitions. [2020-10-24 00:59:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:59:19,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-24 00:59:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:19,047 INFO L225 Difference]: With dead ends: 200 [2020-10-24 00:59:19,048 INFO L226 Difference]: Without dead ends: 197 [2020-10-24 00:59:19,048 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 [2020-10-24 00:59:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-24 00:59:19,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 164. [2020-10-24 00:59:19,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-24 00:59:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 207 transitions. [2020-10-24 00:59:19,083 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 207 transitions. Word has length 54 [2020-10-24 00:59:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:19,084 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 207 transitions. [2020-10-24 00:59:19,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:59:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 207 transitions. [2020-10-24 00:59:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-24 00:59:19,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:19,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:19,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 00:59:19,086 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:19,086 INFO L82 PathProgramCache]: Analyzing trace with hash 581008705, now seen corresponding path program 1 times [2020-10-24 00:59:19,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:19,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057457085] [2020-10-24 00:59:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:19,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:59:19,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057457085] [2020-10-24 00:59:19,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:59:19,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:59:19,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985689525] [2020-10-24 00:59:19,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:59:19,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:19,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:59:19,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:59:19,204 INFO L87 Difference]: Start difference. First operand 164 states and 207 transitions. Second operand 4 states. [2020-10-24 00:59:19,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:19,478 INFO L93 Difference]: Finished difference Result 412 states and 538 transitions. [2020-10-24 00:59:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:59:19,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-24 00:59:19,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:19,481 INFO L225 Difference]: With dead ends: 412 [2020-10-24 00:59:19,481 INFO L226 Difference]: Without dead ends: 281 [2020-10-24 00:59:19,483 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 [2020-10-24 00:59:19,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-24 00:59:19,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 280. [2020-10-24 00:59:19,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-24 00:59:19,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 355 transitions. [2020-10-24 00:59:19,538 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 355 transitions. Word has length 54 [2020-10-24 00:59:19,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:19,538 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 355 transitions. [2020-10-24 00:59:19,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:59:19,539 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 355 transitions. [2020-10-24 00:59:19,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-24 00:59:19,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:19,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:19,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 00:59:19,540 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:19,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:19,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1214087345, now seen corresponding path program 1 times [2020-10-24 00:59:19,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:19,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875939688] [2020-10-24 00:59:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:59:19,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875939688] [2020-10-24 00:59:19,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:59:19,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:59:19,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230962548] [2020-10-24 00:59:19,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:59:19,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:19,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:59:19,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:59:19,634 INFO L87 Difference]: Start difference. First operand 280 states and 355 transitions. Second operand 4 states. [2020-10-24 00:59:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:19,899 INFO L93 Difference]: Finished difference Result 340 states and 430 transitions. [2020-10-24 00:59:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:59:19,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-24 00:59:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:19,903 INFO L225 Difference]: With dead ends: 340 [2020-10-24 00:59:19,904 INFO L226 Difference]: Without dead ends: 337 [2020-10-24 00:59:19,905 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 [2020-10-24 00:59:19,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-24 00:59:19,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 280. [2020-10-24 00:59:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-24 00:59:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 351 transitions. [2020-10-24 00:59:19,973 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 351 transitions. Word has length 55 [2020-10-24 00:59:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:19,975 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 351 transitions. [2020-10-24 00:59:19,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:59:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 351 transitions. [2020-10-24 00:59:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-24 00:59:19,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:19,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:19,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 00:59:19,985 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:19,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:19,985 INFO L82 PathProgramCache]: Analyzing trace with hash 839032282, now seen corresponding path program 1 times [2020-10-24 00:59:19,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:19,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526041554] [2020-10-24 00:59:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:20,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:59:20,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526041554] [2020-10-24 00:59:20,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:59:20,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:59:20,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807825477] [2020-10-24 00:59:20,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:59:20,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:20,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:59:20,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:59:20,097 INFO L87 Difference]: Start difference. First operand 280 states and 351 transitions. Second operand 4 states. [2020-10-24 00:59:20,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:20,406 INFO L93 Difference]: Finished difference Result 748 states and 954 transitions. [2020-10-24 00:59:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:59:20,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-24 00:59:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:20,411 INFO L225 Difference]: With dead ends: 748 [2020-10-24 00:59:20,411 INFO L226 Difference]: Without dead ends: 501 [2020-10-24 00:59:20,415 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 [2020-10-24 00:59:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-10-24 00:59:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 500. [2020-10-24 00:59:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-10-24 00:59:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 619 transitions. [2020-10-24 00:59:20,508 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 619 transitions. Word has length 55 [2020-10-24 00:59:20,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:20,509 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 619 transitions. [2020-10-24 00:59:20,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:59:20,509 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 619 transitions. [2020-10-24 00:59:20,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-24 00:59:20,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:20,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:20,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 00:59:20,512 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:20,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:20,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1929396601, now seen corresponding path program 1 times [2020-10-24 00:59:20,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:20,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307338321] [2020-10-24 00:59:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:59:20,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307338321] [2020-10-24 00:59:20,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:59:20,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:59:20,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090945709] [2020-10-24 00:59:20,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:59:20,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:20,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:59:20,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:59:20,611 INFO L87 Difference]: Start difference. First operand 500 states and 619 transitions. Second operand 4 states. [2020-10-24 00:59:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:20,913 INFO L93 Difference]: Finished difference Result 600 states and 734 transitions. [2020-10-24 00:59:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:59:20,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-24 00:59:20,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:20,917 INFO L225 Difference]: With dead ends: 600 [2020-10-24 00:59:20,917 INFO L226 Difference]: Without dead ends: 597 [2020-10-24 00:59:20,918 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 [2020-10-24 00:59:20,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-24 00:59:21,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 500. [2020-10-24 00:59:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-10-24 00:59:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 611 transitions. [2020-10-24 00:59:21,020 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 611 transitions. Word has length 56 [2020-10-24 00:59:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:21,021 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 611 transitions. [2020-10-24 00:59:21,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:59:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 611 transitions. [2020-10-24 00:59:21,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-24 00:59:21,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:21,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:21,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 00:59:21,023 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:21,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:21,023 INFO L82 PathProgramCache]: Analyzing trace with hash 247840109, now seen corresponding path program 1 times [2020-10-24 00:59:21,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:21,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039315661] [2020-10-24 00:59:21,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:21,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:59:21,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039315661] [2020-10-24 00:59:21,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:59:21,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:59:21,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056142779] [2020-10-24 00:59:21,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:59:21,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:21,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:59:21,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:59:21,084 INFO L87 Difference]: Start difference. First operand 500 states and 611 transitions. Second operand 4 states. [2020-10-24 00:59:21,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:21,440 INFO L93 Difference]: Finished difference Result 1383 states and 1701 transitions. [2020-10-24 00:59:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:59:21,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-24 00:59:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:21,444 INFO L225 Difference]: With dead ends: 1383 [2020-10-24 00:59:21,444 INFO L226 Difference]: Without dead ends: 500 [2020-10-24 00:59:21,446 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 [2020-10-24 00:59:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-10-24 00:59:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2020-10-24 00:59:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-10-24 00:59:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 579 transitions. [2020-10-24 00:59:21,523 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 579 transitions. Word has length 56 [2020-10-24 00:59:21,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:21,523 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 579 transitions. [2020-10-24 00:59:21,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:59:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 579 transitions. [2020-10-24 00:59:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-24 00:59:21,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:21,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:21,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 00:59:21,525 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:21,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:21,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1665831771, now seen corresponding path program 1 times [2020-10-24 00:59:21,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:21,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461272373] [2020-10-24 00:59:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:59:21,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461272373] [2020-10-24 00:59:21,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:59:21,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:59:21,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443798447] [2020-10-24 00:59:21,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:59:21,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:21,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:59:21,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:59:21,589 INFO L87 Difference]: Start difference. First operand 500 states and 579 transitions. Second operand 4 states. [2020-10-24 00:59:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:21,785 INFO L93 Difference]: Finished difference Result 500 states and 579 transitions. [2020-10-24 00:59:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:59:21,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-24 00:59:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:21,786 INFO L225 Difference]: With dead ends: 500 [2020-10-24 00:59:21,786 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 00:59:21,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 00:59:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 00:59:21,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 00:59:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 00:59:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 00:59:21,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-10-24 00:59:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:21,789 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 00:59:21,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:59:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 00:59:21,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 00:59:21,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 00:59:21,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 00:59:22,102 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 39 [2020-10-24 00:59:22,484 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-24 00:59:23,371 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 31 [2020-10-24 00:59:23,926 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2020-10-24 00:59:24,071 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15 [2020-10-24 00:59:24,384 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2020-10-24 00:59:24,970 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-24 00:59:25,670 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-10-24 00:59:25,809 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2020-10-24 00:59:27,195 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-24 00:59:27,478 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2020-10-24 00:59:27,733 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15 [2020-10-24 00:59:27,990 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2020-10-24 00:59:28,663 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2020-10-24 00:59:29,253 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-24 00:59:29,553 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2020-10-24 00:59:29,777 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 15 [2020-10-24 00:59:30,113 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2020-10-24 00:59:30,733 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-10-24 00:59:30,737 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-24 00:59:30,737 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-24 00:59:30,738 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-24 00:59:30,738 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-24 00:59:30,738 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-24 00:59:30,738 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-24 00:59:30,738 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 00:59:30,738 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-24 00:59:30,739 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 00:59:30,739 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-24 00:59:30,739 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|)) [2020-10-24 00:59:30,739 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-24 00:59:30,739 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-24 00:59:30,739 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 00:59:30,740 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 00:59:30,740 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 00:59:30,740 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 00:59:30,740 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 00:59:30,740 INFO L270 CegarLoopResult]: At program point L93(line 93) the Hoare annotation is: false [2020-10-24 00:59:30,740 INFO L270 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (let ((.cse6 (= main_~p2~0 0)) (.cse4 (= main_~lk4~0 1)) (.cse5 (= main_~p3~0 0)) (.cse3 (= main_~p1~0 0)) (.cse0 (= main_~lk3~0 1)) (.cse1 (= main_~lk2~0 1)) (.cse2 (= main_~p4~0 0)) (.cse7 (= main_~lk1~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse7) (and .cse4 .cse0 .cse3 .cse6) (and .cse4 .cse5 .cse1 .cse3) (and .cse0 .cse2 .cse3 .cse6) (and .cse4 .cse5 .cse3 .cse6) (and .cse5 .cse2 .cse3 .cse6) (and .cse5 .cse1 .cse2 .cse7) (and .cse5 .cse2 .cse6 .cse7) (and .cse0 .cse2 .cse6 .cse7) (and .cse4 .cse0 .cse6 .cse7) (and .cse4 .cse0 .cse1 .cse3) (and .cse4 .cse0 .cse1 .cse7) (and .cse4 .cse5 .cse1 .cse7) (and .cse5 .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 .cse7))) [2020-10-24 00:59:30,741 INFO L277 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-10-24 00:59:30,741 INFO L277 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-10-24 00:59:30,741 INFO L277 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: true [2020-10-24 00:59:30,741 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 6 95) the Hoare annotation is: true [2020-10-24 00:59:30,741 INFO L270 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (let ((.cse0 (= main_~lk2~0 1)) (.cse2 (= main_~p1~0 0)) (.cse3 (= main_~p2~0 0)) (.cse1 (= main_~lk1~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse0 .cse2) (and .cse3 .cse1))) [2020-10-24 00:59:30,741 INFO L277 CegarLoopResult]: At program point L85-1(lines 26 90) the Hoare annotation is: true [2020-10-24 00:59:30,742 INFO L270 CegarLoopResult]: At program point L77(line 77) the Hoare annotation is: (let ((.cse2 (= main_~lk5~0 1)) (.cse3 (= main_~p4~0 0)) (.cse0 (= main_~lk4~0 1)) (.cse1 (= main_~lk3~0 1)) (.cse4 (= main_~p5~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse1 .cse3 .cse2) (and .cse1 .cse4 .cse3) (and .cse0 .cse1 .cse4))) [2020-10-24 00:59:30,742 INFO L277 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: true [2020-10-24 00:59:30,742 INFO L277 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: true [2020-10-24 00:59:30,742 INFO L277 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: true [2020-10-24 00:59:30,742 INFO L277 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: true [2020-10-24 00:59:30,742 INFO L270 CegarLoopResult]: At program point L94(line 94) the Hoare annotation is: false [2020-10-24 00:59:30,742 INFO L277 CegarLoopResult]: At program point L28(lines 28 30) the Hoare annotation is: true [2020-10-24 00:59:30,743 INFO L270 CegarLoopResult]: At program point L86(line 86) the Hoare annotation is: (= main_~lk5~0 1) [2020-10-24 00:59:30,743 INFO L270 CegarLoopResult]: At program point L86-1(lines 7 95) the Hoare annotation is: false [2020-10-24 00:59:30,743 INFO L277 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-10-24 00:59:30,743 INFO L277 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: true [2020-10-24 00:59:30,743 INFO L277 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: true [2020-10-24 00:59:30,743 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-24 00:59:30,743 INFO L277 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-10-24 00:59:30,744 INFO L270 CegarLoopResult]: At program point L70-1(lines 26 90) the Hoare annotation is: (let ((.cse1 (= main_~p3~0 0)) (.cse4 (= main_~lk5~0 1)) (.cse5 (= main_~p4~0 0)) (.cse0 (= main_~lk4~0 1)) (.cse3 (= main_~lk3~0 1)) (.cse2 (= main_~p5~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4) (and .cse1 .cse5 .cse4) (and .cse1 .cse2 .cse5) (and .cse0 .cse1 .cse4) (and .cse3 .cse5 .cse4) (and .cse3 .cse2 .cse5) (and .cse0 .cse3 .cse2))) [2020-10-24 00:59:30,744 INFO L270 CegarLoopResult]: At program point L87(line 87) the Hoare annotation is: (= main_~lk5~0 1) [2020-10-24 00:59:30,744 INFO L277 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: true [2020-10-24 00:59:30,744 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 6 95) the Hoare annotation is: true [2020-10-24 00:59:30,744 INFO L270 CegarLoopResult]: At program point L71(line 71) the Hoare annotation is: (let ((.cse6 (= main_~p5~0 0)) (.cse5 (= main_~lk3~0 1)) (.cse2 (= main_~p4~0 0)) (.cse4 (= main_~lk4~0 1)) (.cse0 (= main_~p3~0 0)) (.cse1 (= main_~lk2~0 1)) (.cse3 (= main_~lk5~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse1 .cse3) (and .cse0 .cse6 .cse1 .cse2) (and .cse4 .cse0 .cse6 .cse1) (and .cse4 .cse5 .cse6 .cse1) (and .cse5 .cse6 .cse1 .cse2) (and .cse5 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse1 .cse3))) [2020-10-24 00:59:30,744 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 6 95) the Hoare annotation is: true [2020-10-24 00:59:30,745 INFO L270 CegarLoopResult]: At program point L55-1(lines 26 90) the Hoare annotation is: (let ((.cse6 (= main_~p2~0 0)) (.cse4 (= main_~lk4~0 1)) (.cse5 (= main_~p3~0 0)) (.cse3 (= main_~p1~0 0)) (.cse0 (= main_~lk3~0 1)) (.cse1 (= main_~lk2~0 1)) (.cse2 (= main_~p4~0 0)) (.cse7 (= main_~lk1~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse7) (and .cse4 .cse0 .cse3 .cse6) (and .cse4 .cse5 .cse1 .cse3) (and .cse0 .cse2 .cse3 .cse6) (and .cse4 .cse5 .cse3 .cse6) (and .cse5 .cse2 .cse3 .cse6) (and .cse5 .cse1 .cse2 .cse7) (and .cse0 .cse2 .cse6 .cse7) (and .cse5 .cse2 .cse6 .cse7) (and .cse4 .cse0 .cse6 .cse7) (and .cse4 .cse0 .cse1 .cse3) (and .cse4 .cse0 .cse1 .cse7) (and .cse4 .cse5 .cse1 .cse7) (and .cse5 .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 .cse7))) [2020-10-24 00:59:30,745 INFO L270 CegarLoopResult]: At program point L80-1(lines 26 90) the Hoare annotation is: (or (= main_~p5~0 0) (= main_~lk5~0 1)) [2020-10-24 00:59:30,745 INFO L277 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-10-24 00:59:30,745 INFO L270 CegarLoopResult]: At program point L47-1(lines 26 90) the Hoare annotation is: (let ((.cse0 (= main_~lk2~0 1)) (.cse2 (= main_~p1~0 0)) (.cse3 (= main_~p2~0 0)) (.cse1 (= main_~lk1~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse0 .cse2) (and .cse3 .cse1))) [2020-10-24 00:59:30,745 INFO L277 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-10-24 00:59:30,745 INFO L277 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-10-24 00:59:30,746 INFO L270 CegarLoopResult]: At program point L72(line 72) the Hoare annotation is: (let ((.cse6 (= main_~p5~0 0)) (.cse5 (= main_~lk3~0 1)) (.cse2 (= main_~p4~0 0)) (.cse4 (= main_~lk4~0 1)) (.cse0 (= main_~p3~0 0)) (.cse1 (= main_~lk2~0 1)) (.cse3 (= main_~lk5~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse1 .cse3) (and .cse0 .cse6 .cse1 .cse2) (and .cse4 .cse0 .cse6 .cse1) (and .cse4 .cse5 .cse6 .cse1) (and .cse5 .cse6 .cse1 .cse2) (and .cse5 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse1 .cse3))) [2020-10-24 00:59:30,746 INFO L277 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: true [2020-10-24 00:59:30,746 INFO L277 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-10-24 00:59:30,746 INFO L270 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (let ((.cse2 (= main_~lk1~0 1)) (.cse4 (= main_~p3~0 0)) (.cse1 (= main_~lk2~0 1)) (.cse0 (= main_~lk3~0 1)) (.cse5 (= main_~p1~0 0)) (.cse3 (= main_~p2~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse2) (and .cse4 .cse1 .cse2) (and .cse0 .cse1 .cse5) (and .cse4 .cse5 .cse3) (and .cse4 .cse3 .cse2) (and .cse4 .cse1 .cse5) (and .cse0 .cse5 .cse3))) [2020-10-24 00:59:30,746 INFO L270 CegarLoopResult]: At program point L81(line 81) the Hoare annotation is: (let ((.cse0 (= main_~lk4~0 1))) (or (and .cse0 (= main_~lk5~0 1)) (and .cse0 (= main_~p5~0 0)))) [2020-10-24 00:59:30,746 INFO L270 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (or (= main_~p1~0 0) (= main_~lk1~0 1)) [2020-10-24 00:59:30,747 INFO L277 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-10-24 00:59:30,747 INFO L270 CegarLoopResult]: At program point L65-1(lines 26 90) the Hoare annotation is: (let ((.cse6 (= main_~lk3~0 1)) (.cse0 (= main_~lk4~0 1)) (.cse4 (= main_~lk2~0 1)) (.cse2 (= main_~lk5~0 1)) (.cse1 (= main_~p3~0 0)) (.cse7 (= main_~p5~0 0)) (.cse5 (= main_~p4~0 0)) (.cse3 (= main_~p2~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse4 .cse5 .cse2) (and .cse0 .cse6 .cse7 .cse4) (and .cse6 .cse4 .cse5 .cse2) (and .cse0 .cse6 .cse2 .cse3) (and .cse0 .cse1 .cse7 .cse3) (and .cse6 .cse7 .cse5 .cse3) (and .cse0 .cse6 .cse4 .cse2) (and .cse1 .cse7 .cse4 .cse5) (and .cse6 .cse5 .cse2 .cse3) (and .cse0 .cse6 .cse7 .cse3) (and .cse1 .cse5 .cse2 .cse3) (and .cse0 .cse1 .cse7 .cse4) (and .cse6 .cse7 .cse4 .cse5) (and .cse0 .cse1 .cse4 .cse2) (and .cse1 .cse7 .cse5 .cse3))) [2020-10-24 00:59:30,747 INFO L277 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-10-24 00:59:30,747 INFO L270 CegarLoopResult]: At program point L82(line 82) the Hoare annotation is: (let ((.cse0 (= main_~lk4~0 1))) (or (and .cse0 (= main_~lk5~0 1)) (and .cse0 (= main_~p5~0 0)))) [2020-10-24 00:59:30,747 INFO L277 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-10-24 00:59:30,747 INFO L277 CegarLoopResult]: At program point L8-1(line 8) the Hoare annotation is: true [2020-10-24 00:59:30,748 INFO L270 CegarLoopResult]: At program point L66(line 66) the Hoare annotation is: (let ((.cse7 (= main_~p5~0 0)) (.cse0 (= main_~lk3~0 1)) (.cse8 (= main_~lk4~0 1)) (.cse6 (= main_~p2~0 0)) (.cse5 (= main_~p3~0 0)) (.cse1 (= main_~lk2~0 1)) (.cse2 (= main_~p4~0 0)) (.cse3 (= main_~lk5~0 1)) (.cse4 (= main_~lk1~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse2 .cse3 .cse6 .cse4) (and .cse0 .cse7 .cse2 .cse6 .cse4) (and .cse8 .cse0 .cse7 .cse6 .cse4) (and .cse5 .cse7 .cse2 .cse6 .cse4) (and .cse5 .cse7 .cse1 .cse2 .cse4) (and .cse8 .cse5 .cse7 .cse1 .cse4) (and .cse8 .cse0 .cse1 .cse3 .cse4) (and .cse8 .cse0 .cse7 .cse1 .cse4) (and .cse8 .cse5 .cse7 .cse6 .cse4) (and .cse0 .cse7 .cse1 .cse2 .cse4) (and .cse8 .cse5 .cse1 .cse3 .cse4) (and .cse0 .cse2 .cse3 .cse6 .cse4) (and .cse8 .cse0 .cse3 .cse6 .cse4) (and .cse8 .cse5 .cse3 .cse6 .cse4) (and .cse5 .cse1 .cse2 .cse3 .cse4))) [2020-10-24 00:59:30,748 INFO L277 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-10-24 00:59:30,748 INFO L277 CegarLoopResult]: At program point L91(lines 7 95) the Hoare annotation is: true [2020-10-24 00:59:30,748 INFO L277 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-10-24 00:59:30,748 INFO L277 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-10-24 00:59:30,748 INFO L277 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: true [2020-10-24 00:59:30,749 INFO L270 CegarLoopResult]: At program point L75-1(lines 26 90) the Hoare annotation is: (let ((.cse1 (= main_~lk5~0 1)) (.cse2 (= main_~lk4~0 1)) (.cse3 (= main_~p5~0 0)) (.cse0 (= main_~p4~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse1) (and .cse2 .cse3) (and .cse3 .cse0))) [2020-10-24 00:59:30,749 INFO L277 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-10-24 00:59:30,749 INFO L270 CegarLoopResult]: At program point L67(line 67) the Hoare annotation is: (let ((.cse7 (= main_~p5~0 0)) (.cse0 (= main_~lk3~0 1)) (.cse8 (= main_~lk4~0 1)) (.cse6 (= main_~p2~0 0)) (.cse5 (= main_~p3~0 0)) (.cse1 (= main_~lk2~0 1)) (.cse2 (= main_~p4~0 0)) (.cse3 (= main_~lk5~0 1)) (.cse4 (= main_~lk1~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse2 .cse3 .cse6 .cse4) (and .cse0 .cse7 .cse2 .cse6 .cse4) (and .cse8 .cse0 .cse7 .cse6 .cse4) (and .cse5 .cse7 .cse2 .cse6 .cse4) (and .cse5 .cse7 .cse1 .cse2 .cse4) (and .cse8 .cse5 .cse7 .cse1 .cse4) (and .cse8 .cse0 .cse1 .cse3 .cse4) (and .cse8 .cse0 .cse7 .cse1 .cse4) (and .cse8 .cse5 .cse7 .cse6 .cse4) (and .cse0 .cse7 .cse1 .cse2 .cse4) (and .cse8 .cse5 .cse1 .cse3 .cse4) (and .cse0 .cse2 .cse3 .cse6 .cse4) (and .cse8 .cse0 .cse3 .cse6 .cse4) (and .cse8 .cse5 .cse3 .cse6 .cse4) (and .cse5 .cse1 .cse2 .cse3 .cse4))) [2020-10-24 00:59:30,749 INFO L270 CegarLoopResult]: At program point L59-1(lines 26 90) the Hoare annotation is: (let ((.cse0 (= main_~lk3~0 1)) (.cse6 (= main_~p2~0 0)) (.cse2 (= main_~p4~0 0)) (.cse3 (= main_~lk5~0 1)) (.cse4 (= main_~lk1~0 1)) (.cse8 (= main_~lk4~0 1)) (.cse7 (= main_~p3~0 0)) (.cse5 (= main_~p5~0 0)) (.cse1 (= main_~lk2~0 1)) (.cse9 (= main_~p1~0 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse2 .cse6 .cse4) (and .cse7 .cse5 .cse1 .cse2 .cse4) (and .cse8 .cse0 .cse5 .cse6 .cse4) (and .cse7 .cse5 .cse2 .cse6 .cse4) (and .cse8 .cse7 .cse5 .cse1 .cse4) (and .cse8 .cse0 .cse1 .cse3 .cse4) (and .cse8 .cse0 .cse5 .cse1 .cse4) (and .cse7 .cse1 .cse2 .cse3 .cse9) (and .cse8 .cse7 .cse5 .cse6 .cse4) (and .cse8 .cse7 .cse1 .cse3 .cse4) (and .cse0 .cse5 .cse1 .cse2 .cse4) (and .cse0 .cse5 .cse2 .cse9 .cse6) (and .cse8 .cse7 .cse3 .cse6 .cse4) (and .cse8 .cse7 .cse3 .cse9 .cse6) (and .cse7 .cse2 .cse3 .cse9 .cse6) (and .cse8 .cse0 .cse5 .cse1 .cse9) (and .cse7 .cse2 .cse3 .cse6 .cse4) (and .cse7 .cse5 .cse1 .cse2 .cse9) (and .cse8 .cse0 .cse1 .cse3 .cse9) (and .cse8 .cse0 .cse5 .cse9 .cse6) (and .cse8 .cse7 .cse5 .cse9 .cse6) (and .cse0 .cse1 .cse2 .cse3 .cse9) (and .cse0 .cse2 .cse3 .cse9 .cse6) (and .cse8 .cse7 .cse1 .cse3 .cse9) (and .cse8 .cse0 .cse3 .cse9 .cse6) (and .cse0 .cse5 .cse1 .cse2 .cse9) (and .cse0 .cse2 .cse3 .cse6 .cse4) (and .cse8 .cse0 .cse3 .cse6 .cse4) (and .cse7 .cse5 .cse2 .cse9 .cse6) (and .cse7 .cse1 .cse2 .cse3 .cse4) (and .cse8 .cse7 .cse5 .cse1 .cse9))) [2020-10-24 00:59:30,750 INFO L277 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-10-24 00:59:30,750 INFO L270 CegarLoopResult]: At program point L51-1(lines 26 90) the Hoare annotation is: (let ((.cse2 (= main_~lk1~0 1)) (.cse4 (= main_~p3~0 0)) (.cse1 (= main_~lk2~0 1)) (.cse0 (= main_~lk3~0 1)) (.cse5 (= main_~p1~0 0)) (.cse3 (= main_~p2~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse2) (and .cse4 .cse1 .cse2) (and .cse0 .cse1 .cse5) (and .cse4 .cse5 .cse3) (and .cse4 .cse3 .cse2) (and .cse4 .cse1 .cse5) (and .cse0 .cse5 .cse3))) [2020-10-24 00:59:30,750 INFO L270 CegarLoopResult]: At program point L76(line 76) the Hoare annotation is: (let ((.cse2 (= main_~lk5~0 1)) (.cse3 (= main_~p4~0 0)) (.cse0 (= main_~lk4~0 1)) (.cse1 (= main_~lk3~0 1)) (.cse4 (= main_~p5~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse1 .cse3 .cse2) (and .cse1 .cse4 .cse3) (and .cse0 .cse1 .cse4))) [2020-10-24 00:59:30,750 INFO L277 CegarLoopResult]: At program point L43(lines 43 45) the Hoare annotation is: true [2020-10-24 00:59:30,750 INFO L270 CegarLoopResult]: At program point L43-2(lines 26 90) the Hoare annotation is: (or (= main_~p1~0 0) (= main_~lk1~0 1)) [2020-10-24 00:59:30,750 INFO L277 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-10-24 00:59:30,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:59:30 BoogieIcfgContainer [2020-10-24 00:59:30,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:59:30,768 INFO L168 Benchmark]: Toolchain (without parser) took 15417.13 ms. Allocated memory was 159.4 MB in the beginning and 350.2 MB in the end (delta: 190.8 MB). Free memory was 136.4 MB in the beginning and 156.4 MB in the end (delta: -20.0 MB). Peak memory consumption was 205.2 MB. Max. memory is 8.0 GB. [2020-10-24 00:59:30,768 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 159.4 MB. Free memory is still 133.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:59:30,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.70 ms. Allocated memory is still 159.4 MB. Free memory was 135.9 MB in the beginning and 125.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 00:59:30,773 INFO L168 Benchmark]: Boogie Preprocessor took 51.42 ms. Allocated memory is still 159.4 MB. Free memory was 125.7 MB in the beginning and 124.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 00:59:30,773 INFO L168 Benchmark]: RCFGBuilder took 597.76 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 104.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-24 00:59:30,774 INFO L168 Benchmark]: TraceAbstraction took 14460.59 ms. Allocated memory was 159.4 MB in the beginning and 350.2 MB in the end (delta: 190.8 MB). Free memory was 104.7 MB in the beginning and 156.4 MB in the end (delta: -51.7 MB). Peak memory consumption was 173.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:59:30,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 159.4 MB. Free memory is still 133.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.70 ms. Allocated memory is still 159.4 MB. Free memory was 135.9 MB in the beginning and 125.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.42 ms. Allocated memory is still 159.4 MB. Free memory was 125.7 MB in the beginning and 124.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 597.76 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 104.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14460.59 ms. Allocated memory was 159.4 MB in the beginning and 350.2 MB in the end (delta: 190.8 MB). Free memory was 104.7 MB in the beginning and 156.4 MB in the end (delta: -51.7 MB). Peak memory consumption was 173.7 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 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1046 SDtfs, 1143 SDslu, 171 SDs, 0 SdLazy, 745 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=500occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 210 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 80 LocationsWithAnnotation, 116 PreInvPairs, 1004 NumberOfFragments, 2420 HoareAnnotationTreeSize, 116 FomulaSimplifications, 129125 FormulaSimplificationTreeSizeReduction, 1.9s HoareSimplificationTime, 80 FomulaSimplificationsInter, 6608 FormulaSimplificationTreeSizeReductionInter, 6.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 545 NumberOfCodeBlocks, 545 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 535 ConstructedInterpolants, 0 QuantifiedInterpolants, 50585 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...