/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_8.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:25:46,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:25:46,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:25:46,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:25:46,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:25:46,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:25:46,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:25:46,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:25:46,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:25:46,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:25:46,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:25:46,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:25:46,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:25:46,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:25:46,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:25:46,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:25:46,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:25:46,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:25:46,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:25:46,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:25:46,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:25:46,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:25:46,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:25:46,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:25:46,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:25:46,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:25:46,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:25:46,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:25:46,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:25:46,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:25:46,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:25:46,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:25:46,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:25:46,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:25:46,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:25:46,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:25:46,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:25:46,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:25:46,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:25:46,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:25:46,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:25:46,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:25:46,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:25:46,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:25:46,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:25:46,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:25:46,262 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:25:46,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:25:46,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:25:46,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:25:46,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:25:46,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:25:46,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:25:46,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:25:46,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:25:46,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:25:46,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:25:46,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:25:46,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:25:46,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:25:46,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:25:46,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:25:46,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:25:46,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:25:46,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:25:46,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:25:46,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:25:46,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:25:46,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:25:46,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:25:46,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:25:46,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:25:46,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:25:46,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:25:46,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:25:46,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:25:46,827 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:25:46,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_8.c [2020-09-21 12:25:46,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc8fad93b/d7de5c5a16ab4bfd85ca42023cf945f5/FLAGe2181a7fe [2020-09-21 12:25:47,435 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:25:47,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_8.c [2020-09-21 12:25:47,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc8fad93b/d7de5c5a16ab4bfd85ca42023cf945f5/FLAGe2181a7fe [2020-09-21 12:25:47,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc8fad93b/d7de5c5a16ab4bfd85ca42023cf945f5 [2020-09-21 12:25:47,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:25:47,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:25:47,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:47,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:25:47,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:25:47,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:47" (1/1) ... [2020-09-21 12:25:47,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249e641f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:47, skipping insertion in model container [2020-09-21 12:25:47,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:47" (1/1) ... [2020-09-21 12:25:47,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:25:47,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:25:48,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:48,189 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:25:48,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:48,232 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:25:48,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:48 WrapperNode [2020-09-21 12:25:48,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:48,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:25:48,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:25:48,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:25:48,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:48" (1/1) ... [2020-09-21 12:25:48,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:48" (1/1) ... [2020-09-21 12:25:48,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:48" (1/1) ... [2020-09-21 12:25:48,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:48" (1/1) ... [2020-09-21 12:25:48,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:48" (1/1) ... [2020-09-21 12:25:48,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:48" (1/1) ... [2020-09-21 12:25:48,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:48" (1/1) ... [2020-09-21 12:25:48,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:25:48,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:25:48,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:25:48,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:25:48,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-21 12:25:48,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:25:48,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:25:48,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:25:48,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:25:48,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:25:48,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:25:48,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:25:48,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:25:48,823 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:25:48,823 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:25:48,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:48 BoogieIcfgContainer [2020-09-21 12:25:48,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:25:48,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:25:48,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:25:48,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:25:48,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:25:47" (1/3) ... [2020-09-21 12:25:48,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4977ebd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:48, skipping insertion in model container [2020-09-21 12:25:48,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:48" (2/3) ... [2020-09-21 12:25:48,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4977ebd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:48, skipping insertion in model container [2020-09-21 12:25:48,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:48" (3/3) ... [2020-09-21 12:25:48,838 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2020-09-21 12:25:48,851 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:25:48,861 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:25:48,883 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:25:48,915 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:25:48,915 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:25:48,915 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:25:48,915 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:25:48,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:25:48,916 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:25:48,916 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:25:48,916 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:25:48,937 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-21 12:25:48,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 12:25:48,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:48,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:48,946 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:48,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:48,954 INFO L82 PathProgramCache]: Analyzing trace with hash 577441593, now seen corresponding path program 1 times [2020-09-21 12:25:48,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:48,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079676426] [2020-09-21 12:25:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:49,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:49,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:25:49,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:49,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-21 12:25:49,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:49,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:49,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:25:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:25:49,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-21 12:25:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:49,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:49,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:49,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:49,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:49,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:49,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:49,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:49,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:49,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079676426] [2020-09-21 12:25:49,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:49,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:49,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084626447] [2020-09-21 12:25:49,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:49,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:49,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:49,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:49,505 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-09-21 12:25:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:49,581 INFO L93 Difference]: Finished difference Result 75 states and 126 transitions. [2020-09-21 12:25:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:49,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-21 12:25:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:49,600 INFO L225 Difference]: With dead ends: 75 [2020-09-21 12:25:49,600 INFO L226 Difference]: Without dead ends: 60 [2020-09-21 12:25:49,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:49,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-21 12:25:49,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 42. [2020-09-21 12:25:49,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 12:25:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 73 transitions. [2020-09-21 12:25:49,656 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 73 transitions. Word has length 18 [2020-09-21 12:25:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:49,657 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 73 transitions. [2020-09-21 12:25:49,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 73 transitions. [2020-09-21 12:25:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 12:25:49,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:49,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:49,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:25:49,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:49,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:49,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1278506171, now seen corresponding path program 1 times [2020-09-21 12:25:49,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:49,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922757555] [2020-09-21 12:25:49,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:49,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:49,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:49,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:25:49,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:49,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-21 12:25:49,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:49,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:25:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:49,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:49,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:49,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:49,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:49,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:49,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:49,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:49,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:49,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922757555] [2020-09-21 12:25:49,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:49,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:49,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129210041] [2020-09-21 12:25:49,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:49,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:49,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:49,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:49,812 INFO L87 Difference]: Start difference. First operand 42 states and 73 transitions. Second operand 3 states. [2020-09-21 12:25:49,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:49,844 INFO L93 Difference]: Finished difference Result 97 states and 172 transitions. [2020-09-21 12:25:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:49,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-21 12:25:49,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:49,846 INFO L225 Difference]: With dead ends: 97 [2020-09-21 12:25:49,847 INFO L226 Difference]: Without dead ends: 60 [2020-09-21 12:25:49,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:49,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-21 12:25:49,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-09-21 12:25:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-21 12:25:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 101 transitions. [2020-09-21 12:25:49,858 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 101 transitions. Word has length 18 [2020-09-21 12:25:49,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:49,859 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 101 transitions. [2020-09-21 12:25:49,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 101 transitions. [2020-09-21 12:25:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:25:49,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:49,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:49,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:25:49,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:49,861 INFO L82 PathProgramCache]: Analyzing trace with hash 721034227, now seen corresponding path program 1 times [2020-09-21 12:25:49,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:49,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943470935] [2020-09-21 12:25:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:49,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:49,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:50,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:50,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-21 12:25:50,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:25:50,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:25:50,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:25:50,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:50,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:50,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:50,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943470935] [2020-09-21 12:25:50,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:50,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:50,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550188811] [2020-09-21 12:25:50,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:50,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:50,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:50,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,040 INFO L87 Difference]: Start difference. First operand 58 states and 101 transitions. Second operand 3 states. [2020-09-21 12:25:50,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:50,064 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-09-21 12:25:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:50,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-21 12:25:50,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:50,067 INFO L225 Difference]: With dead ends: 109 [2020-09-21 12:25:50,068 INFO L226 Difference]: Without dead ends: 107 [2020-09-21 12:25:50,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-21 12:25:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2020-09-21 12:25:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-21 12:25:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 135 transitions. [2020-09-21 12:25:50,082 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 135 transitions. Word has length 19 [2020-09-21 12:25:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:50,083 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 135 transitions. [2020-09-21 12:25:50,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 135 transitions. [2020-09-21 12:25:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:25:50,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:50,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:50,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:25:50,086 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:50,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1422098805, now seen corresponding path program 1 times [2020-09-21 12:25:50,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:50,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113292551] [2020-09-21 12:25:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:50,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:50,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-21 12:25:50,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:25:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:50,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:50,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:50,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113292551] [2020-09-21 12:25:50,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:50,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:50,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983893559] [2020-09-21 12:25:50,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:50,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:50,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:50,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,260 INFO L87 Difference]: Start difference. First operand 77 states and 135 transitions. Second operand 3 states. [2020-09-21 12:25:50,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:50,284 INFO L93 Difference]: Finished difference Result 118 states and 203 transitions. [2020-09-21 12:25:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:50,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-21 12:25:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:50,288 INFO L225 Difference]: With dead ends: 118 [2020-09-21 12:25:50,288 INFO L226 Difference]: Without dead ends: 82 [2020-09-21 12:25:50,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-21 12:25:50,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-09-21 12:25:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-21 12:25:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 136 transitions. [2020-09-21 12:25:50,303 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 136 transitions. Word has length 19 [2020-09-21 12:25:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:50,304 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 136 transitions. [2020-09-21 12:25:50,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:50,304 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 136 transitions. [2020-09-21 12:25:50,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:25:50,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:50,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:50,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:25:50,309 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:50,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:50,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1680264243, now seen corresponding path program 1 times [2020-09-21 12:25:50,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:50,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629542342] [2020-09-21 12:25:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:50,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:25:50,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:25:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:50,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:50,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:50,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:25:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:50,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629542342] [2020-09-21 12:25:50,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:50,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:50,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792302071] [2020-09-21 12:25:50,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:50,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:50,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:50,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,401 INFO L87 Difference]: Start difference. First operand 80 states and 136 transitions. Second operand 3 states. [2020-09-21 12:25:50,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:50,436 INFO L93 Difference]: Finished difference Result 184 states and 318 transitions. [2020-09-21 12:25:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:50,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-21 12:25:50,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:50,438 INFO L225 Difference]: With dead ends: 184 [2020-09-21 12:25:50,438 INFO L226 Difference]: Without dead ends: 112 [2020-09-21 12:25:50,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-21 12:25:50,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-09-21 12:25:50,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-21 12:25:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 186 transitions. [2020-09-21 12:25:50,457 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 186 transitions. Word has length 19 [2020-09-21 12:25:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:50,457 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 186 transitions. [2020-09-21 12:25:50,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 186 transitions. [2020-09-21 12:25:50,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:25:50,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:50,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:50,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:25:50,459 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:50,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:50,460 INFO L82 PathProgramCache]: Analyzing trace with hash 290632912, now seen corresponding path program 1 times [2020-09-21 12:25:50,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:50,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132900857] [2020-09-21 12:25:50,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:25:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-21 12:25:50,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:25:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:25:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:50,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:50,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:50,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132900857] [2020-09-21 12:25:50,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:50,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:50,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058850446] [2020-09-21 12:25:50,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:50,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:50,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:50,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,581 INFO L87 Difference]: Start difference. First operand 110 states and 186 transitions. Second operand 3 states. [2020-09-21 12:25:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:50,610 INFO L93 Difference]: Finished difference Result 202 states and 346 transitions. [2020-09-21 12:25:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:50,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-21 12:25:50,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:50,613 INFO L225 Difference]: With dead ends: 202 [2020-09-21 12:25:50,613 INFO L226 Difference]: Without dead ends: 200 [2020-09-21 12:25:50,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-21 12:25:50,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 150. [2020-09-21 12:25:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-09-21 12:25:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 252 transitions. [2020-09-21 12:25:50,642 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 252 transitions. Word has length 20 [2020-09-21 12:25:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:50,642 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 252 transitions. [2020-09-21 12:25:50,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 252 transitions. [2020-09-21 12:25:50,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:25:50,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:50,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:50,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:25:50,648 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:50,648 INFO L82 PathProgramCache]: Analyzing trace with hash 991697490, now seen corresponding path program 1 times [2020-09-21 12:25:50,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:50,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635696677] [2020-09-21 12:25:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:25:50,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-21 12:25:50,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:25:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:50,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:50,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:50,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:50,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635696677] [2020-09-21 12:25:50,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:50,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:50,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367253986] [2020-09-21 12:25:50,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:50,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:50,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:50,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,809 INFO L87 Difference]: Start difference. First operand 150 states and 252 transitions. Second operand 3 states. [2020-09-21 12:25:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:50,837 INFO L93 Difference]: Finished difference Result 224 states and 374 transitions. [2020-09-21 12:25:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:50,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-21 12:25:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:50,840 INFO L225 Difference]: With dead ends: 224 [2020-09-21 12:25:50,840 INFO L226 Difference]: Without dead ends: 154 [2020-09-21 12:25:50,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-21 12:25:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-09-21 12:25:50,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-21 12:25:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 250 transitions. [2020-09-21 12:25:50,866 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 250 transitions. Word has length 20 [2020-09-21 12:25:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:50,866 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 250 transitions. [2020-09-21 12:25:50,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:50,866 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 250 transitions. [2020-09-21 12:25:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:25:50,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:50,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:50,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:25:50,870 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:50,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:50,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1249862928, now seen corresponding path program 1 times [2020-09-21 12:25:50,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:50,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627514417] [2020-09-21 12:25:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:25:50,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:25:50,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:25:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:50,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:50,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:25:50,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:50,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627514417] [2020-09-21 12:25:50,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:50,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:50,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351438485] [2020-09-21 12:25:50,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:50,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:50,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:50,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:50,967 INFO L87 Difference]: Start difference. First operand 152 states and 250 transitions. Second operand 3 states. [2020-09-21 12:25:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:50,999 INFO L93 Difference]: Finished difference Result 352 states and 584 transitions. [2020-09-21 12:25:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:51,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-21 12:25:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:51,002 INFO L225 Difference]: With dead ends: 352 [2020-09-21 12:25:51,002 INFO L226 Difference]: Without dead ends: 210 [2020-09-21 12:25:51,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-21 12:25:51,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2020-09-21 12:25:51,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-21 12:25:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 338 transitions. [2020-09-21 12:25:51,029 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 338 transitions. Word has length 20 [2020-09-21 12:25:51,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:51,030 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 338 transitions. [2020-09-21 12:25:51,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 338 transitions. [2020-09-21 12:25:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 12:25:51,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:51,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:51,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:25:51,037 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:51,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:51,037 INFO L82 PathProgramCache]: Analyzing trace with hash -166905624, now seen corresponding path program 1 times [2020-09-21 12:25:51,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:51,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226391944] [2020-09-21 12:25:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:25:51,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:51,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-21 12:25:51,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:25:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:25:51,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:51,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:51,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:51,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226391944] [2020-09-21 12:25:51,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:51,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:51,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729071342] [2020-09-21 12:25:51,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:51,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:51,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:51,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,146 INFO L87 Difference]: Start difference. First operand 208 states and 338 transitions. Second operand 3 states. [2020-09-21 12:25:51,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:51,166 INFO L93 Difference]: Finished difference Result 376 states and 620 transitions. [2020-09-21 12:25:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:51,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 12:25:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:51,169 INFO L225 Difference]: With dead ends: 376 [2020-09-21 12:25:51,170 INFO L226 Difference]: Without dead ends: 374 [2020-09-21 12:25:51,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-09-21 12:25:51,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 292. [2020-09-21 12:25:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-09-21 12:25:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 466 transitions. [2020-09-21 12:25:51,183 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 466 transitions. Word has length 21 [2020-09-21 12:25:51,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:51,184 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 466 transitions. [2020-09-21 12:25:51,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:51,184 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 466 transitions. [2020-09-21 12:25:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 12:25:51,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:51,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:51,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:25:51,186 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:51,187 INFO L82 PathProgramCache]: Analyzing trace with hash 534158954, now seen corresponding path program 1 times [2020-09-21 12:25:51,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:51,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821918677] [2020-09-21 12:25:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:25:51,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:51,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 12:25:51,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:25:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:51,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:51,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:51,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:51,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:51,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:51,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821918677] [2020-09-21 12:25:51,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:51,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:51,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644204060] [2020-09-21 12:25:51,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:51,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:51,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:51,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,320 INFO L87 Difference]: Start difference. First operand 292 states and 466 transitions. Second operand 3 states. [2020-09-21 12:25:51,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:51,340 INFO L93 Difference]: Finished difference Result 436 states and 692 transitions. [2020-09-21 12:25:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:51,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 12:25:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:51,342 INFO L225 Difference]: With dead ends: 436 [2020-09-21 12:25:51,343 INFO L226 Difference]: Without dead ends: 298 [2020-09-21 12:25:51,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-21 12:25:51,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 296. [2020-09-21 12:25:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-09-21 12:25:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 462 transitions. [2020-09-21 12:25:51,354 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 462 transitions. Word has length 21 [2020-09-21 12:25:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:51,354 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 462 transitions. [2020-09-21 12:25:51,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 462 transitions. [2020-09-21 12:25:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 12:25:51,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:51,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:51,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:25:51,356 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:51,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:51,356 INFO L82 PathProgramCache]: Analyzing trace with hash 792324392, now seen corresponding path program 1 times [2020-09-21 12:25:51,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:51,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493093723] [2020-09-21 12:25:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:25:51,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:25:51,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:25:51,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:51,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:51,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:51,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:51,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:51,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493093723] [2020-09-21 12:25:51,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:51,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:51,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364276049] [2020-09-21 12:25:51,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:51,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:51,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:51,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,420 INFO L87 Difference]: Start difference. First operand 296 states and 462 transitions. Second operand 3 states. [2020-09-21 12:25:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:51,440 INFO L93 Difference]: Finished difference Result 684 states and 1072 transitions. [2020-09-21 12:25:51,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:51,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 12:25:51,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:51,444 INFO L225 Difference]: With dead ends: 684 [2020-09-21 12:25:51,444 INFO L226 Difference]: Without dead ends: 402 [2020-09-21 12:25:51,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-09-21 12:25:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2020-09-21 12:25:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-09-21 12:25:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 614 transitions. [2020-09-21 12:25:51,458 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 614 transitions. Word has length 21 [2020-09-21 12:25:51,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:51,458 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 614 transitions. [2020-09-21 12:25:51,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:51,458 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 614 transitions. [2020-09-21 12:25:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 12:25:51,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:51,459 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] [2020-09-21 12:25:51,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:25:51,460 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:51,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1465698011, now seen corresponding path program 1 times [2020-09-21 12:25:51,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:51,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120253586] [2020-09-21 12:25:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 12:25:51,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:51,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 12:25:51,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:25:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:51,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:51,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:51,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:51,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:51,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:51,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120253586] [2020-09-21 12:25:51,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:51,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:51,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029929353] [2020-09-21 12:25:51,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:51,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:51,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:51,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,570 INFO L87 Difference]: Start difference. First operand 400 states and 614 transitions. Second operand 3 states. [2020-09-21 12:25:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:51,604 INFO L93 Difference]: Finished difference Result 600 states and 916 transitions. [2020-09-21 12:25:51,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:51,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 12:25:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:51,607 INFO L225 Difference]: With dead ends: 600 [2020-09-21 12:25:51,607 INFO L226 Difference]: Without dead ends: 410 [2020-09-21 12:25:51,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-09-21 12:25:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 408. [2020-09-21 12:25:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-09-21 12:25:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 614 transitions. [2020-09-21 12:25:51,625 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 614 transitions. Word has length 22 [2020-09-21 12:25:51,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:51,627 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 614 transitions. [2020-09-21 12:25:51,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:51,628 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 614 transitions. [2020-09-21 12:25:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 12:25:51,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:51,630 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] [2020-09-21 12:25:51,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:25:51,631 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:51,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:51,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1207532573, now seen corresponding path program 1 times [2020-09-21 12:25:51,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:51,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524319145] [2020-09-21 12:25:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 12:25:51,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:25:51,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:25:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:25:51,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:51,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:51,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:51,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:51,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:51,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:51,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:51,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524319145] [2020-09-21 12:25:51,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:51,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:51,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865400057] [2020-09-21 12:25:51,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:51,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:51,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:51,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,738 INFO L87 Difference]: Start difference. First operand 408 states and 614 transitions. Second operand 3 states. [2020-09-21 12:25:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:51,770 INFO L93 Difference]: Finished difference Result 716 states and 1096 transitions. [2020-09-21 12:25:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:51,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 12:25:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:51,780 INFO L225 Difference]: With dead ends: 716 [2020-09-21 12:25:51,781 INFO L226 Difference]: Without dead ends: 714 [2020-09-21 12:25:51,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-09-21 12:25:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 584. [2020-09-21 12:25:51,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-09-21 12:25:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 854 transitions. [2020-09-21 12:25:51,818 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 854 transitions. Word has length 22 [2020-09-21 12:25:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:51,819 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 854 transitions. [2020-09-21 12:25:51,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 854 transitions. [2020-09-21 12:25:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 12:25:51,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:51,822 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] [2020-09-21 12:25:51,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:25:51,823 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:51,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:51,823 INFO L82 PathProgramCache]: Analyzing trace with hash -506467995, now seen corresponding path program 1 times [2020-09-21 12:25:51,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:51,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354560713] [2020-09-21 12:25:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 12:25:51,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:25:51,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:25:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:51,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:51,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:51,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:51,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:51,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:51,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:51,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354560713] [2020-09-21 12:25:51,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:51,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:51,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217862412] [2020-09-21 12:25:51,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:51,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:51,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:51,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,907 INFO L87 Difference]: Start difference. First operand 584 states and 854 transitions. Second operand 3 states. [2020-09-21 12:25:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:51,940 INFO L93 Difference]: Finished difference Result 1340 states and 1960 transitions. [2020-09-21 12:25:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:51,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 12:25:51,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:51,947 INFO L225 Difference]: With dead ends: 1340 [2020-09-21 12:25:51,947 INFO L226 Difference]: Without dead ends: 778 [2020-09-21 12:25:51,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-09-21 12:25:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 776. [2020-09-21 12:25:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-09-21 12:25:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1110 transitions. [2020-09-21 12:25:51,974 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1110 transitions. Word has length 22 [2020-09-21 12:25:51,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:51,974 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 1110 transitions. [2020-09-21 12:25:51,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:51,975 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1110 transitions. [2020-09-21 12:25:51,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 12:25:51,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:51,976 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] [2020-09-21 12:25:51,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:25:51,977 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:51,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:51,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1221411293, now seen corresponding path program 1 times [2020-09-21 12:25:51,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:51,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136258638] [2020-09-21 12:25:51,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:25:52,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:52,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 12:25:52,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:25:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:52,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:52,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:52,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:52,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:52,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:52,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136258638] [2020-09-21 12:25:52,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:52,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:52,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102242258] [2020-09-21 12:25:52,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:52,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:52,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:52,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:52,091 INFO L87 Difference]: Start difference. First operand 776 states and 1110 transitions. Second operand 3 states. [2020-09-21 12:25:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:52,120 INFO L93 Difference]: Finished difference Result 1164 states and 1656 transitions. [2020-09-21 12:25:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:52,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-21 12:25:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:52,125 INFO L225 Difference]: With dead ends: 1164 [2020-09-21 12:25:52,125 INFO L226 Difference]: Without dead ends: 794 [2020-09-21 12:25:52,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2020-09-21 12:25:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 792. [2020-09-21 12:25:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-09-21 12:25:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1110 transitions. [2020-09-21 12:25:52,177 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1110 transitions. Word has length 23 [2020-09-21 12:25:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:52,177 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1110 transitions. [2020-09-21 12:25:52,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1110 transitions. [2020-09-21 12:25:52,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 12:25:52,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:52,179 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] [2020-09-21 12:25:52,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:25:52,180 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:52,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:52,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1479576731, now seen corresponding path program 1 times [2020-09-21 12:25:52,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:52,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819885883] [2020-09-21 12:25:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:25:52,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:25:52,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:25:52,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:25:52,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:52,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:52,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:52,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819885883] [2020-09-21 12:25:52,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:52,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:52,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486204357] [2020-09-21 12:25:52,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:52,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:52,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:52,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:52,249 INFO L87 Difference]: Start difference. First operand 792 states and 1110 transitions. Second operand 3 states. [2020-09-21 12:25:52,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:52,278 INFO L93 Difference]: Finished difference Result 1356 states and 1928 transitions. [2020-09-21 12:25:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:52,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-21 12:25:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:52,285 INFO L225 Difference]: With dead ends: 1356 [2020-09-21 12:25:52,286 INFO L226 Difference]: Without dead ends: 1354 [2020-09-21 12:25:52,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-09-21 12:25:52,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1160. [2020-09-21 12:25:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2020-09-21 12:25:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1574 transitions. [2020-09-21 12:25:52,319 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1574 transitions. Word has length 23 [2020-09-21 12:25:52,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:52,319 INFO L479 AbstractCegarLoop]: Abstraction has 1160 states and 1574 transitions. [2020-09-21 12:25:52,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:52,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1574 transitions. [2020-09-21 12:25:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 12:25:52,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:52,322 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] [2020-09-21 12:25:52,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 12:25:52,322 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:52,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:52,323 INFO L82 PathProgramCache]: Analyzing trace with hash -2114325987, now seen corresponding path program 1 times [2020-09-21 12:25:52,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:52,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797899421] [2020-09-21 12:25:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:25:52,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:52,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:25:52,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:25:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:52,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:52,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:52,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:52,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:52,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797899421] [2020-09-21 12:25:52,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:52,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:52,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629469478] [2020-09-21 12:25:52,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:52,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:52,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:52,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:52,385 INFO L87 Difference]: Start difference. First operand 1160 states and 1574 transitions. Second operand 3 states. [2020-09-21 12:25:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:52,424 INFO L93 Difference]: Finished difference Result 2636 states and 3560 transitions. [2020-09-21 12:25:52,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:52,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-21 12:25:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:52,432 INFO L225 Difference]: With dead ends: 2636 [2020-09-21 12:25:52,432 INFO L226 Difference]: Without dead ends: 1514 [2020-09-21 12:25:52,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-09-21 12:25:52,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1512. [2020-09-21 12:25:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1512 states. [2020-09-21 12:25:52,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1990 transitions. [2020-09-21 12:25:52,475 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1990 transitions. Word has length 23 [2020-09-21 12:25:52,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:52,476 INFO L479 AbstractCegarLoop]: Abstraction has 1512 states and 1990 transitions. [2020-09-21 12:25:52,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:52,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1990 transitions. [2020-09-21 12:25:52,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 12:25:52,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:52,479 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] [2020-09-21 12:25:52,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 12:25:52,479 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:52,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:52,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1377545862, now seen corresponding path program 1 times [2020-09-21 12:25:52,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:52,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326351686] [2020-09-21 12:25:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:25:52,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 12:25:52,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 12:25:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:25:52,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:52,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:52,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:52,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:52,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:52,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326351686] [2020-09-21 12:25:52,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:52,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:52,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829875200] [2020-09-21 12:25:52,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:52,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:52,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:52,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:52,577 INFO L87 Difference]: Start difference. First operand 1512 states and 1990 transitions. Second operand 3 states. [2020-09-21 12:25:52,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:52,632 INFO L93 Difference]: Finished difference Result 2540 states and 3368 transitions. [2020-09-21 12:25:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:52,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 12:25:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:52,646 INFO L225 Difference]: With dead ends: 2540 [2020-09-21 12:25:52,646 INFO L226 Difference]: Without dead ends: 2538 [2020-09-21 12:25:52,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:52,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2020-09-21 12:25:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2280. [2020-09-21 12:25:52,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2020-09-21 12:25:52,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 2918 transitions. [2020-09-21 12:25:52,726 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 2918 transitions. Word has length 24 [2020-09-21 12:25:52,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:52,727 INFO L479 AbstractCegarLoop]: Abstraction has 2280 states and 2918 transitions. [2020-09-21 12:25:52,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:52,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 2918 transitions. [2020-09-21 12:25:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 12:25:52,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:52,732 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] [2020-09-21 12:25:52,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-21 12:25:52,732 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:52,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:52,732 INFO L82 PathProgramCache]: Analyzing trace with hash -676481284, now seen corresponding path program 1 times [2020-09-21 12:25:52,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:52,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706920244] [2020-09-21 12:25:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:25:52,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:52,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 12:25:52,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 12:25:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:52,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:52,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:52,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:52,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706920244] [2020-09-21 12:25:52,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:52,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:52,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123664654] [2020-09-21 12:25:52,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:52,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:52,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:52,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:52,846 INFO L87 Difference]: Start difference. First operand 2280 states and 2918 transitions. Second operand 3 states. [2020-09-21 12:25:52,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:52,908 INFO L93 Difference]: Finished difference Result 5164 states and 6568 transitions. [2020-09-21 12:25:52,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:52,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 12:25:52,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:52,921 INFO L225 Difference]: With dead ends: 5164 [2020-09-21 12:25:52,921 INFO L226 Difference]: Without dead ends: 2922 [2020-09-21 12:25:52,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-09-21 12:25:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2020-09-21 12:25:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2920 states. [2020-09-21 12:25:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 3590 transitions. [2020-09-21 12:25:53,008 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 3590 transitions. Word has length 24 [2020-09-21 12:25:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:53,009 INFO L479 AbstractCegarLoop]: Abstraction has 2920 states and 3590 transitions. [2020-09-21 12:25:53,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:53,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 3590 transitions. [2020-09-21 12:25:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:25:53,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:53,013 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] [2020-09-21 12:25:53,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-21 12:25:53,013 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:53,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:53,013 INFO L82 PathProgramCache]: Analyzing trace with hash 245967312, now seen corresponding path program 1 times [2020-09-21 12:25:53,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:53,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639421887] [2020-09-21 12:25:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:53,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:25:53,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-21 12:25:53,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:53,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:53,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:25:53,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:53,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:53,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:53,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:53,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:53,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:53,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:53,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:53,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:53,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639421887] [2020-09-21 12:25:53,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:53,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:53,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136928963] [2020-09-21 12:25:53,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:53,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:53,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:53,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:53,164 INFO L87 Difference]: Start difference. First operand 2920 states and 3590 transitions. Second operand 3 states. [2020-09-21 12:25:53,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:53,269 INFO L93 Difference]: Finished difference Result 8554 states and 10375 transitions. [2020-09-21 12:25:53,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:53,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-21 12:25:53,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:53,287 INFO L225 Difference]: With dead ends: 8554 [2020-09-21 12:25:53,287 INFO L226 Difference]: Without dead ends: 2920 [2020-09-21 12:25:53,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-09-21 12:25:53,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2920. [2020-09-21 12:25:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2920 states. [2020-09-21 12:25:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 3334 transitions. [2020-09-21 12:25:53,412 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 3334 transitions. Word has length 25 [2020-09-21 12:25:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:53,413 INFO L479 AbstractCegarLoop]: Abstraction has 2920 states and 3334 transitions. [2020-09-21 12:25:53,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 3334 transitions. [2020-09-21 12:25:53,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:25:53,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:53,421 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] [2020-09-21 12:25:53,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-21 12:25:53,421 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:53,422 INFO L82 PathProgramCache]: Analyzing trace with hash -455097266, now seen corresponding path program 1 times [2020-09-21 12:25:53,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:53,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265795725] [2020-09-21 12:25:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:53,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:53,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:25:53,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:53,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-21 12:25:53,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 12:25:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:53,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:53,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:53,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:53,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:53,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265795725] [2020-09-21 12:25:53,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:53,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:53,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268525584] [2020-09-21 12:25:53,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:53,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:53,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:53,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:53,627 INFO L87 Difference]: Start difference. First operand 2920 states and 3334 transitions. Second operand 3 states. [2020-09-21 12:25:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:53,710 INFO L93 Difference]: Finished difference Result 4428 states and 5064 transitions. [2020-09-21 12:25:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:53,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-21 12:25:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:53,729 INFO L225 Difference]: With dead ends: 4428 [2020-09-21 12:25:53,729 INFO L226 Difference]: Without dead ends: 3018 [2020-09-21 12:25:53,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:53,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-09-21 12:25:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 3016. [2020-09-21 12:25:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3016 states. [2020-09-21 12:25:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 3398 transitions. [2020-09-21 12:25:53,874 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 3398 transitions. Word has length 25 [2020-09-21 12:25:53,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:53,874 INFO L479 AbstractCegarLoop]: Abstraction has 3016 states and 3398 transitions. [2020-09-21 12:25:53,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 3398 transitions. [2020-09-21 12:25:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:25:53,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:53,880 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] [2020-09-21 12:25:53,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-21 12:25:53,881 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:53,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:53,881 INFO L82 PathProgramCache]: Analyzing trace with hash -196931828, now seen corresponding path program 1 times [2020-09-21 12:25:53,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:53,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298810824] [2020-09-21 12:25:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:53,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:25:53,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-21 12:25:53,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:25:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:53,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:53,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:53,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:53,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:53,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:53,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:53,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:53,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298810824] [2020-09-21 12:25:53,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:53,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:53,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64622432] [2020-09-21 12:25:53,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:53,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:53,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:53,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:53,999 INFO L87 Difference]: Start difference. First operand 3016 states and 3398 transitions. Second operand 3 states. [2020-09-21 12:25:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:54,078 INFO L93 Difference]: Finished difference Result 4428 states and 4872 transitions. [2020-09-21 12:25:54,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:54,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-21 12:25:54,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:54,097 INFO L225 Difference]: With dead ends: 4428 [2020-09-21 12:25:54,097 INFO L226 Difference]: Without dead ends: 3018 [2020-09-21 12:25:54,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-09-21 12:25:54,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 3016. [2020-09-21 12:25:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3016 states. [2020-09-21 12:25:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 3270 transitions. [2020-09-21 12:25:54,215 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 3270 transitions. Word has length 25 [2020-09-21 12:25:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:54,216 INFO L479 AbstractCegarLoop]: Abstraction has 3016 states and 3270 transitions. [2020-09-21 12:25:54,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:54,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 3270 transitions. [2020-09-21 12:25:54,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:25:54,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:54,223 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] [2020-09-21 12:25:54,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-21 12:25:54,223 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:54,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:54,224 INFO L82 PathProgramCache]: Analyzing trace with hash -783737842, now seen corresponding path program 1 times [2020-09-21 12:25:54,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:54,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975435661] [2020-09-21 12:25:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:54,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:54,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:25:54,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:25:54,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:25:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:25:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:54,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:54,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:25:54,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:25:54,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:54,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:54,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975435661] [2020-09-21 12:25:54,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:54,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:25:54,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968345257] [2020-09-21 12:25:54,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:25:54,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:54,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:25:54,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:54,294 INFO L87 Difference]: Start difference. First operand 3016 states and 3270 transitions. Second operand 3 states. [2020-09-21 12:25:54,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:54,347 INFO L93 Difference]: Finished difference Result 3016 states and 3270 transitions. [2020-09-21 12:25:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:25:54,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-21 12:25:54,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:54,348 INFO L225 Difference]: With dead ends: 3016 [2020-09-21 12:25:54,348 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:25:54,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:25:54,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:25:54,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:25:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:25:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:25:54,354 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-09-21 12:25:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:54,354 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:25:54,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:25:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:25:54,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:25:54,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-21 12:25:54,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:25:54,387 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 12:25:54,387 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:25:54,388 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:25:54,388 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:25:54,388 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:25:54,388 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:25:54,388 INFO L268 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-09-21 12:25:54,388 INFO L264 CegarLoopResult]: At program point L126-1(lines 5 135) the Hoare annotation is: false [2020-09-21 12:25:54,389 INFO L268 CegarLoopResult]: For program point L60-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,389 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 135) no Hoare annotation was computed. [2020-09-21 12:25:54,389 INFO L268 CegarLoopResult]: For program point L110-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,389 INFO L268 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-09-21 12:25:54,389 INFO L268 CegarLoopResult]: For program point L95-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,389 INFO L268 CegarLoopResult]: For program point L120-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,389 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 135) no Hoare annotation was computed. [2020-09-21 12:25:54,390 INFO L268 CegarLoopResult]: For program point L96(line 96) no Hoare annotation was computed. [2020-09-21 12:25:54,390 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 133) no Hoare annotation was computed. [2020-09-21 12:25:54,390 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 135) the Hoare annotation is: true [2020-09-21 12:25:54,390 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-09-21 12:25:54,390 INFO L268 CegarLoopResult]: For program point L80-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,390 INFO L268 CegarLoopResult]: For program point L105-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,391 INFO L268 CegarLoopResult]: For program point L72-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,391 INFO L268 CegarLoopResult]: For program point L64-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,391 INFO L268 CegarLoopResult]: For program point L56(lines 56 58) no Hoare annotation was computed. [2020-09-21 12:25:54,391 INFO L268 CegarLoopResult]: For program point L56-2(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,391 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-09-21 12:25:54,391 INFO L271 CegarLoopResult]: At program point L131(lines 5 135) the Hoare annotation is: true [2020-09-21 12:25:54,391 INFO L268 CegarLoopResult]: For program point L90-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,391 INFO L268 CegarLoopResult]: For program point L115-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,392 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-09-21 12:25:54,392 INFO L268 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-09-21 12:25:54,392 INFO L268 CegarLoopResult]: For program point L100-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,392 INFO L271 CegarLoopResult]: At program point L125-1(lines 33 130) the Hoare annotation is: true [2020-09-21 12:25:54,392 INFO L268 CegarLoopResult]: For program point L84-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,392 INFO L268 CegarLoopResult]: For program point L76-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,392 INFO L268 CegarLoopResult]: For program point L101(line 101) no Hoare annotation was computed. [2020-09-21 12:25:54,393 INFO L268 CegarLoopResult]: For program point L35(lines 35 37) no Hoare annotation was computed. [2020-09-21 12:25:54,393 INFO L268 CegarLoopResult]: For program point L68-1(lines 33 130) no Hoare annotation was computed. [2020-09-21 12:25:54,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:25:54 BoogieIcfgContainer [2020-09-21 12:25:54,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:25:54,411 INFO L168 Benchmark]: Toolchain (without parser) took 6605.51 ms. Allocated memory was 137.9 MB in the beginning and 303.0 MB in the end (delta: 165.2 MB). Free memory was 101.4 MB in the beginning and 142.5 MB in the end (delta: -41.0 MB). Peak memory consumption was 124.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:54,412 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:25:54,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.63 ms. Allocated memory is still 137.9 MB. Free memory was 100.8 MB in the beginning and 90.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:54,413 INFO L168 Benchmark]: Boogie Preprocessor took 132.27 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.5 MB in the beginning and 178.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:54,414 INFO L168 Benchmark]: RCFGBuilder took 462.62 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 160.1 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:54,415 INFO L168 Benchmark]: TraceAbstraction took 5577.96 ms. Allocated memory was 200.3 MB in the beginning and 303.0 MB in the end (delta: 102.8 MB). Free memory was 160.1 MB in the beginning and 142.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:25:54,417 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 421.63 ms. Allocated memory is still 137.9 MB. Free memory was 100.8 MB in the beginning and 90.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.27 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.5 MB in the beginning and 178.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.62 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 160.1 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5577.96 ms. Allocated memory was 200.3 MB in the beginning and 303.0 MB in the end (delta: 102.8 MB). Free memory was 160.1 MB in the beginning and 142.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 133]: 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: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 23, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1565 SDtfs, 750 SDslu, 1051 SDs, 0 SdLazy, 121 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3016occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 23 MinimizatonAttempts, 790 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 266 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 499 NumberOfCodeBlocks, 499 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 476 ConstructedInterpolants, 0 QuantifiedInterpolants, 19098 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 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...