/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:30:51,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:30:51,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:30:51,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:30:51,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:30:51,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:30:51,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:30:51,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:30:51,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:30:51,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:30:51,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:30:51,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:30:51,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:30:51,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:30:51,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:30:51,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:30:51,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:30:51,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:30:51,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:30:51,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:30:51,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:30:51,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:30:51,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:30:51,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:30:51,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:30:51,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:30:51,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:30:51,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:30:51,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:30:51,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:30:51,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:30:51,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:30:51,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:30:51,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:30:51,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:30:51,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:30:51,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:30:51,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:30:51,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:30:51,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:30:51,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:30:51,673 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 [2020-09-25 14:30:51,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:30:51,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:30:51,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:30:51,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:30:51,730 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:30:51,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:30:51,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:30:51,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:30:51,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:30:51,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:30:51,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:30:51,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:30:51,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:30:51,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:30:51,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:30:51,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:30:51,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:30:51,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:30:51,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:30:51,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:30:51,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:30:51,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:30:51,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:30:51,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:30:51,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:30:51,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:30:51,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:30:51,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:30:51,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:30:51,737 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.rcfgbuilder: Size of a code block -> SingleStatement 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:30:52,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:30:52,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:30:52,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:30:52,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:30:52,299 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:30:52,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-09-25 14:30:52,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730772b43/264b011547504786a33b16dc4e769b01/FLAG6e19c54d7 [2020-09-25 14:30:52,917 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:30:52,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-09-25 14:30:52,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730772b43/264b011547504786a33b16dc4e769b01/FLAG6e19c54d7 [2020-09-25 14:30:53,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730772b43/264b011547504786a33b16dc4e769b01 [2020-09-25 14:30:53,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:30:53,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:30:53,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:30:53,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:30:53,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:30:53,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:30:53" (1/1) ... [2020-09-25 14:30:53,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:53, skipping insertion in model container [2020-09-25 14:30:53,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:30:53" (1/1) ... [2020-09-25 14:30:53,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:30:53,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:30:53,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:30:53,609 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:30:53,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:30:53,656 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:30:53,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:53 WrapperNode [2020-09-25 14:30:53,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:30:53,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:30:53,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:30:53,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:30:53,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:53" (1/1) ... [2020-09-25 14:30:53,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:53" (1/1) ... [2020-09-25 14:30:53,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:53" (1/1) ... [2020-09-25 14:30:53,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:53" (1/1) ... [2020-09-25 14:30:53,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:53" (1/1) ... [2020-09-25 14:30:53,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:53" (1/1) ... [2020-09-25 14:30:53,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:53" (1/1) ... [2020-09-25 14:30:53,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:30:53,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:30:53,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:30:53,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:30:53,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:53" (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 [2020-09-25 14:30:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:30:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:30:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 14:30:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 14:30:53,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:30:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:30:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:30:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 14:30:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 14:30:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:30:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:30:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:30:54,167 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:30:54,168 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:30:54,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:30:54 BoogieIcfgContainer [2020-09-25 14:30:54,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:30:54,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:30:54,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:30:54,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:30:54,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:30:53" (1/3) ... [2020-09-25 14:30:54,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:30:54, skipping insertion in model container [2020-09-25 14:30:54,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:53" (2/3) ... [2020-09-25 14:30:54,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:30:54, skipping insertion in model container [2020-09-25 14:30:54,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:30:54" (3/3) ... [2020-09-25 14:30:54,213 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-09-25 14:30:54,230 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:30:54,241 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:30:54,289 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:30:54,325 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:30:54,325 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:30:54,325 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:30:54,326 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:30:54,326 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:30:54,326 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:30:54,326 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:30:54,326 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:30:54,352 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 14:30:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 14:30:54,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:54,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:54,362 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:54,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:54,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 14:30:54,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:54,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-25 14:30:54,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:54,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:54,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:30:54,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 14:30:54,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:54,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:30:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:54,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 14:30:54,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:54,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:54,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:54,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:54,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:54,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:54,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:54,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:54,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:54,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:54,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:54,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:54,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:30:54,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:54,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:30:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:30:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:30:54,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-25 14:30:54,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:54,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:30:54,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686457239] [2020-09-25 14:30:54,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:30:54,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:54,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:30:54,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:30:54,920 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 14:30:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:55,062 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 14:30:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:30:55,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 14:30:55,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:55,079 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:30:55,079 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 14:30:55,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:30:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 14:30:55,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 14:30:55,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:30:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:30:55,144 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 14:30:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:55,144 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:30:55,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:30:55,145 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:30:55,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 14:30:55,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:55,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:55,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:30:55,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:55,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:55,149 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 14:30:55,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:55,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721536756] [2020-09-25 14:30:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:55,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:30:55,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:55,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 14:30:55,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:55,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:55,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:55,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:55,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:55,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:55,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:55,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:55,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:55,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:55,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:55,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:55,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:55,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:55,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:55,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 14:30:55,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:55,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:55,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:55,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:30:55,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721536756] [2020-09-25 14:30:55,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:55,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:30:55,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784418919] [2020-09-25 14:30:55,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:30:55,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:55,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:30:55,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:30:55,509 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 14:30:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:55,622 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 14:30:55,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:30:55,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 14:30:55,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:55,626 INFO L225 Difference]: With dead ends: 50 [2020-09-25 14:30:55,626 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 14:30:55,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:30:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 14:30:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 14:30:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:30:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:30:55,649 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 14:30:55,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:55,649 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:30:55,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:30:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:30:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 14:30:55,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:55,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:55,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:30:55,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:55,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:55,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 14:30:55,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:55,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519546177] [2020-09-25 14:30:55,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:55,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:57,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:57,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:30:57,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:30:57,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1925 [2020-09-25 14:30:57,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:57,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:57,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:57,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:57,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:30:57,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:30:57,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:57,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:57,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:57,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:57,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:57,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:57,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:57,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:57,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:57,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:57,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:57,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:57,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:57,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:57,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 14:30:57,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:57,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:57,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:57,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:57,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:57,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:30:57,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:57,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:57,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:57,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:57,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:57,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:57,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:57,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:57,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:30:57,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:57,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:57,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:57,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:30:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:30:57,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519546177] [2020-09-25 14:30:57,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:57,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:30:57,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097188894] [2020-09-25 14:30:57,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:57,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:57,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:57,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:57,989 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 14:30:58,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:58,160 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 14:30:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:30:58,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 14:30:58,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:58,164 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:30:58,164 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 14:30:58,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:30:58,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 14:30:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 14:30:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:30:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 14:30:58,176 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 14:30:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:58,177 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 14:30:58,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 14:30:58,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:30:58,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:58,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:58,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:30:58,180 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:58,180 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 14:30:58,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:58,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052924144] [2020-09-25 14:30:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:58,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:58,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:58,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:58,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:30:59,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:30:59,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1710 [2020-09-25 14:30:59,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:30:59,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:59,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:59,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:59,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:59,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:00,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:31:00,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:31:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-25 14:31:00,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:00,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:00,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:00,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:00,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:31:00,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:00,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:00,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:00,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:31:00,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:00,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:00,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:31:00,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:31:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:00,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:00,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:00,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:31:00,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:00,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:00,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:31:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:31:00,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052924144] [2020-09-25 14:31:00,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:31:00,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:31:00,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457535283] [2020-09-25 14:31:00,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:31:00,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:00,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:31:00,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:31:00,566 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 14:31:00,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:00,733 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-09-25 14:31:00,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:31:00,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 14:31:00,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:00,736 INFO L225 Difference]: With dead ends: 70 [2020-09-25 14:31:00,737 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 14:31:00,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:31:00,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 14:31:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-09-25 14:31:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 14:31:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 14:31:00,749 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 14:31:00,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:00,749 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 14:31:00,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:31:00,750 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 14:31:00,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:31:00,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:00,752 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:00,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:31:00,752 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:00,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:00,753 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 14:31:00,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:00,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308282936] [2020-09-25 14:31:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:03,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:05,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 14:31:05,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:31:05,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:31:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:05,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:31:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:05,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:05,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:05,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:05,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:05,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:05,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:05,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:05,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:05,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:07,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:31:07,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:31:07,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1655 [2020-09-25 14:31:07,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:07,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:31:07,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:07,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:07,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:07,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:07,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:31:07,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:07,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:31:07,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:07,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:31:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:07,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:07,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:07,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:07,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 14:31:07,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:07,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:07,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:07,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:07,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:07,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:07,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:31:07,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:07,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:07,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:07,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:07,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:07,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:07,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:31:07,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:07,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 14:31:07,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308282936] [2020-09-25 14:31:07,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:07,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:31:07,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059409487] [2020-09-25 14:31:07,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:31:07,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:07,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:31:07,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:31:07,652 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 14:31:07,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:07,812 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 14:31:07,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:31:07,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 14:31:07,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:07,817 INFO L225 Difference]: With dead ends: 72 [2020-09-25 14:31:07,817 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 14:31:07,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:31:07,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 14:31:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 50. [2020-09-25 14:31:07,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:31:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 14:31:07,838 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 14:31:07,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:07,838 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 14:31:07,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:31:07,839 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 14:31:07,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 14:31:07,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:07,844 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:07,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:31:07,844 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 14:31:07,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:07,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317641620] [2020-09-25 14:31:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:12,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:31:12,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:31:12,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:31:12,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:12,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:31:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:31:12,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:12,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:12,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:12,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:12,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:12,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:12,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:12,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:12,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:12,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:12,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:12,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:13,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:14,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:14,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:17,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:31:17,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:31:17,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:31:17,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:17,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:31:17,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:17,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:17,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:17,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:17,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 14:31:17,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:17,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:17,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:31:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:17,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:17,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:17,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:17,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:17,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:31:17,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:17,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:17,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:17,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:17,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:31:17,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:18,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:18,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:31:18,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:18,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:18,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:18,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:31:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:18,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:18,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:18,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:18,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 14:31:18,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:18,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:18,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:18,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:18,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:18,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:18,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:18,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:31:18,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:18,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:18,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:18,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:18,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:18,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:18,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:31:18,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:18,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:18,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 14:31:18,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317641620] [2020-09-25 14:31:18,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:18,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:31:18,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956619951] [2020-09-25 14:31:18,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:31:18,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:18,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:31:18,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:31:18,191 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 10 states. [2020-09-25 14:31:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:18,475 INFO L93 Difference]: Finished difference Result 119 states and 159 transitions. [2020-09-25 14:31:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:31:18,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 14:31:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:18,477 INFO L225 Difference]: With dead ends: 119 [2020-09-25 14:31:18,477 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 14:31:18,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:31:18,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 14:31:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-09-25 14:31:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 14:31:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2020-09-25 14:31:18,505 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 67 [2020-09-25 14:31:18,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:18,506 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2020-09-25 14:31:18,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:31:18,506 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2020-09-25 14:31:18,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 14:31:18,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:18,515 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:18,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:31:18,516 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:18,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1454118782, now seen corresponding path program 1 times [2020-09-25 14:31:18,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:18,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126672693] [2020-09-25 14:31:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:18,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:20,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:20,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:31:23,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:31:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:31:23,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:31:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:31:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:23,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:23,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:23,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:23,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:23,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:24,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:28,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:31:28,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:31:28,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:31:28,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:28,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:28,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:28,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:28,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:31:28,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:28,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:28,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:28,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:31:28,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:31:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-09-25 14:31:28,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:28,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:31:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:28,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:28,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:28,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:31:28,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:28,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:31:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:28,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:31:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:29,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:29,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:31:29,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:29,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:29,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:29,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:31:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:29,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:29,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:29,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:29,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 14:31:29,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:29,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:29,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:29,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:29,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:29,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:31:29,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:29,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:29,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:29,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:29,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:29,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:31:29,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:29,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 14:31:29,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126672693] [2020-09-25 14:31:29,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:29,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:31:29,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522457335] [2020-09-25 14:31:29,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:31:29,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:29,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:31:29,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:31:29,202 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 9 states. [2020-09-25 14:31:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:29,409 INFO L93 Difference]: Finished difference Result 144 states and 192 transitions. [2020-09-25 14:31:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:31:29,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-09-25 14:31:29,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:29,412 INFO L225 Difference]: With dead ends: 144 [2020-09-25 14:31:29,412 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 14:31:29,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:31:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 14:31:29,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-09-25 14:31:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 14:31:29,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2020-09-25 14:31:29,426 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 68 [2020-09-25 14:31:29,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:29,426 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2020-09-25 14:31:29,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:31:29,427 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2020-09-25 14:31:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 14:31:29,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:29,429 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:29,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:31:29,429 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:29,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:29,430 INFO L82 PathProgramCache]: Analyzing trace with hash -659479355, now seen corresponding path program 1 times [2020-09-25 14:31:29,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:29,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188657342] [2020-09-25 14:31:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:31,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:31,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:31,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:34,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 14:31:34,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:31:34,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:31:34,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:34,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:31:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:31:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:34,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:34,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:34,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:34,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:34,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:34,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:34,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:34,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:34,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:39,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:39,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 14:31:39,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 14:31:39,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:31:39,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:39,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:31:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:31:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:31:39,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:39,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:39,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:39,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:39,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:39,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:40,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:31:40,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:31:40,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-09-25 14:31:40,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:40,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:31:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:31:40,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:40,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:40,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:40,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:40,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:40,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 14:31:40,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:40,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:31:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:40,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:40,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:40,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:40,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:31:40,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:40,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:40,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:40,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:40,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:40,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:31:40,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:40,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:40,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:31:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:40,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:40,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:40,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:40,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:31:40,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:40,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:40,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:40,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:31:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:40,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:40,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:40,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 14:31:40,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:40,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:31:40,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:40,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:40,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:40,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:40,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:31:40,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:40,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:40,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:40,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:40,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:40,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:40,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:40,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:31:40,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:40,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 14:31:40,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 14:31:40,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188657342] [2020-09-25 14:31:40,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:40,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:31:40,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785112073] [2020-09-25 14:31:40,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:31:40,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:40,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:31:40,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:31:40,564 INFO L87 Difference]: Start difference. First operand 84 states and 104 transitions. Second operand 12 states. [2020-09-25 14:31:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:40,775 INFO L93 Difference]: Finished difference Result 161 states and 216 transitions. [2020-09-25 14:31:40,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:31:40,776 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-09-25 14:31:40,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:40,779 INFO L225 Difference]: With dead ends: 161 [2020-09-25 14:31:40,780 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 14:31:40,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:31:40,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 14:31:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2020-09-25 14:31:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 14:31:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2020-09-25 14:31:40,807 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 84 [2020-09-25 14:31:40,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:40,808 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2020-09-25 14:31:40,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:31:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2020-09-25 14:31:40,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 14:31:40,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:40,815 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:40,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:31:40,815 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:40,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:40,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 14:31:40,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:40,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044019264] [2020-09-25 14:31:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:40,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:41,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:42,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:42,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:42,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:42,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:43,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:45,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:45,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 14:31:45,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 14:31:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:31:45,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:45,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:31:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:31:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:31:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:45,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:45,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:45,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:45,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:45,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:45,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:45,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:45,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:46,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:46,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:47,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:47,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:47,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:47,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking...