/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=0.2 --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_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:06:53,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:06:53,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:06:53,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:06:53,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:06:53,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:06:53,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:06:53,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:06:53,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:06:53,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:06:53,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:06:53,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:06:53,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:06:53,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:06:53,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:06:53,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:06:53,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:06:53,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:06:53,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:06:53,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:06:53,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:06:53,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:06:53,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:06:53,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:06:53,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:06:53,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:06:53,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:06:53,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:06:53,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:06:53,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:06:53,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:06:53,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:06:53,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:06:53,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:06:53,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:06:53,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:06:53,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:06:53,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:06:53,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:06:53,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:06:53,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:06:53,818 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 11:06:53,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:06:53,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:06:53,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:06:53,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:06:53,847 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:06:53,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:06:53,848 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:06:53,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:06:53,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:06:53,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:06:53,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:06:53,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:06:53,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:06:53,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:06:53,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:06:53,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:06:53,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:06:53,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:06:53,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:06:53,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:06:53,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:06:53,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:06:53,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:06:53,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:06:53,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:06:53,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:06:53,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:06:53,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:06:53,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:06:53,852 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:06:54,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:06:54,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:06:54,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:06:54,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:06:54,359 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:06:54,360 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-25 11:06:54,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e1cb4e67/604e916539de4f8bb86229418c079c9d/FLAGb8dccb513 [2020-09-25 11:06:54,980 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:06:54,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-25 11:06:54,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e1cb4e67/604e916539de4f8bb86229418c079c9d/FLAGb8dccb513 [2020-09-25 11:06:55,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e1cb4e67/604e916539de4f8bb86229418c079c9d [2020-09-25 11:06:55,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:06:55,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:06:55,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:55,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:06:55,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:06:55,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb5adc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55, skipping insertion in model container [2020-09-25 11:06:55,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:06:55,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:06:55,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:55,621 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:06:55,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:55,651 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:06:55,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55 WrapperNode [2020-09-25 11:06:55,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:55,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:06:55,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:06:55,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:06:55,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:06:55,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:06:55,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:06:55,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:06:55,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (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 11:06:55,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:06:55,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:06:55,839 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 11:06:55,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:06:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:06:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:06:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 11:06:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:06:55,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:06:55,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:06:56,036 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:06:56,036 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:06:56,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:56 BoogieIcfgContainer [2020-09-25 11:06:56,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:06:56,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:06:56,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:06:56,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:06:56,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:06:55" (1/3) ... [2020-09-25 11:06:56,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ab7158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:56, skipping insertion in model container [2020-09-25 11:06:56,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (2/3) ... [2020-09-25 11:06:56,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ab7158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:56, skipping insertion in model container [2020-09-25 11:06:56,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:56" (3/3) ... [2020-09-25 11:06:56,081 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-2.c [2020-09-25 11:06:56,101 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:06:56,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:06:56,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:06:56,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:06:56,192 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:06:56,192 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:06:56,192 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:06:56,193 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:06:56,193 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:06:56,193 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:06:56,193 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:06:56,212 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 11:06:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:06:56,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:56,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:56,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:56,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:56,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 11:06:56,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:56,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703943172] [2020-09-25 11:06:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:56,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 11:06:56,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:06:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:06:56,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:56,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:06:56,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:56,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:56,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:06:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:56,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:06:56,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:06:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:06:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:56,739 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 11:06:56,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703943172] [2020-09-25 11:06:56,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:56,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:06:56,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690855469] [2020-09-25 11:06:56,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:06:56,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:56,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:06:56,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:06:56,772 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 11:06:56,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:56,870 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 11:06:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:06:56,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:06:56,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:56,887 INFO L225 Difference]: With dead ends: 44 [2020-09-25 11:06:56,887 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 11:06:56,892 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 11:06:56,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 11:06:56,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 11:06:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 11:06:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 11:06:56,953 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 11:06:56,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:56,954 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 11:06:56,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:06:56,954 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 11:06:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:06:56,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:56,957 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 11:06:56,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:06:56,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:56,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:56,958 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 11:06:56,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:56,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768923772] [2020-09-25 11:06:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:57,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:06:57,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 11:06:57,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:57,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:06:57,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:57,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:57,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:57,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:57,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:57,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:57,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:57,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:57,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:57,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:06:57,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:06:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:57,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:57,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:57,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 11:06:57,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:57,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:06:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:57,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:57,241 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 11:06:57,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768923772] [2020-09-25 11:06:57,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:57,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:06:57,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180660980] [2020-09-25 11:06:57,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:06:57,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:57,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:06:57,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:06:57,247 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 11:06:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:57,317 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 11:06:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:06:57,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:06:57,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:57,320 INFO L225 Difference]: With dead ends: 36 [2020-09-25 11:06:57,320 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 11:06:57,322 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 11:06:57,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 11:06:57,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 11:06:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 11:06:57,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 11:06:57,331 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 11:06:57,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:57,331 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 11:06:57,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:06:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 11:06:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:06:57,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:57,334 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 11:06:57,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:06:57,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:57,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:57,335 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 11:06:57,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:57,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293633766] [2020-09-25 11:06:57,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:06:59,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:59,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1993 [2020-09-25 11:06:59,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:06:59,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:59,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:59,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:59,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:59,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:59,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:06:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:59,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:59,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 11:06:59,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:59,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:06:59,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:06:59,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:59,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:59,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:06:59,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:59,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:59,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:06:59,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:59,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 11:06:59,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293633766] [2020-09-25 11:06:59,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:59,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:06:59,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780677853] [2020-09-25 11:06:59,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:06:59,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:59,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:06:59,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:06:59,645 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 11:06:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:59,730 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-25 11:06:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:06:59,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 11:06:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:59,734 INFO L225 Difference]: With dead ends: 44 [2020-09-25 11:06:59,734 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 11:06:59,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:06:59,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 11:06:59,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 11:06:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 11:06:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 11:06:59,746 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 11:06:59,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:59,746 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 11:06:59,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:06:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 11:06:59,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:06:59,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:59,749 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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 11:06:59,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:06:59,749 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:59,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:59,750 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 11:06:59,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:59,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350875547] [2020-09-25 11:06:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:01,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:07:01,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:07:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1749 [2020-09-25 11:07:01,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:01,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:07:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:01,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:01,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:01,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:01,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:01,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:01,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:01,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:01,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:01,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:01,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:01,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:01,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-25 11:07:01,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:01,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:02,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:07:02,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:02,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:02,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:02,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:02,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:07:02,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:02,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:02,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:02,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:02,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 11:07:02,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350875547] [2020-09-25 11:07:02,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:02,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:02,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412929382] [2020-09-25 11:07:02,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:02,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:02,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:02,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:02,107 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-25 11:07:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:02,257 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-09-25 11:07:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:07:02,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 11:07:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:02,261 INFO L225 Difference]: With dead ends: 52 [2020-09-25 11:07:02,261 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 11:07:02,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:07:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 11:07:02,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2020-09-25 11:07:02,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 11:07:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 11:07:02,272 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 35 [2020-09-25 11:07:02,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:02,273 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 11:07:02,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:02,273 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 11:07:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 11:07:02,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:02,276 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:02,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:07:02,277 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:02,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:02,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1767822624, now seen corresponding path program 2 times [2020-09-25 11:07:02,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:02,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12979625] [2020-09-25 11:07:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:07,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 11:07:07,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:07:07,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 11:07:07,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:07,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:07:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:07:07,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:07,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:07,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:07,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:07,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:07,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:07,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:07,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:07,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:07,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:07,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:12,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 11:07:12,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:07:12,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:07:12,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:12,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:12,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:07:12,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:07:12,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:07:12,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:12,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:12,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:12,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:12,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 11:07:12,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:12,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:12,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:12,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:12,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:12,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:12,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:12,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:07:12,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:12,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:12,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:12,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:12,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:12,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:12,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:07:12,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:12,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:12,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:13,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:07:13,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:07:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-09-25 11:07:13,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:13,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 11:07:13,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:13,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:13,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:13,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:13,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 11:07:13,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:13,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:13,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:13,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:13,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:13,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:13,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:13,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:13,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:13,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:13,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:13,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:13,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:13,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:13,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:13,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:13,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:13,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:13,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:13,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:13,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:13,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:07:13,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:13,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:13,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:13,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 80 proven. 45 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 11:07:13,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12979625] [2020-09-25 11:07:13,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:13,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:07:13,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244408207] [2020-09-25 11:07:13,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:07:13,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:13,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:07:13,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:07:13,975 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 11 states. [2020-09-25 11:07:14,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:14,271 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2020-09-25 11:07:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:14,274 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-09-25 11:07:14,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:14,278 INFO L225 Difference]: With dead ends: 74 [2020-09-25 11:07:14,278 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:07:14,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:07:14,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:07:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 11:07:14,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 11:07:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-09-25 11:07:14,304 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 84 [2020-09-25 11:07:14,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:14,305 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-09-25 11:07:14,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:07:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-09-25 11:07:14,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 11:07:14,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:14,309 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:14,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:07:14,310 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:14,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:14,310 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 1 times [2020-09-25 11:07:14,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:14,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752178636] [2020-09-25 11:07:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:14,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:19,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 11:07:19,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:07:19,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:07:19,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:19,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:19,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:19,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:07:19,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:07:19,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:19,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:19,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:19,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:19,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:19,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:19,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:19,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:19,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:20,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:20,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:24,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 11:07:24,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:07:24,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:07:24,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:24,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:07:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 11:07:24,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:24,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:24,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:07:24,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:24,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 11:07:24,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:24,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:24,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:24,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:24,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:24,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:24,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:24,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:24,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:07:24,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:24,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:24,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:24,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:24,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:24,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:24,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:24,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:07:24,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:24,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:24,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:24,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:07:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:26,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:07:26,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:07:26,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2326 [2020-09-25 11:07:26,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:26,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:07:26,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:26,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:26,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:27,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:07:27,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:07:27,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:27,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:27,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:27,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:27,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:27,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:27,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:07:27,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:27,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:27,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:27,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:27,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:27,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:27,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:27,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:27,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:07:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:27,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:27,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:07:27,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:27,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:27,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 60 proven. 65 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-09-25 11:07:27,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752178636] [2020-09-25 11:07:27,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:27,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:07:27,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130236077] [2020-09-25 11:07:27,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:07:27,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:27,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:07:27,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:27,073 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 9 states. [2020-09-25 11:07:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:27,343 INFO L93 Difference]: Finished difference Result 92 states and 130 transitions. [2020-09-25 11:07:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:07:27,344 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 11:07:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:27,346 INFO L225 Difference]: With dead ends: 92 [2020-09-25 11:07:27,346 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 11:07:27,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:07:27,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 11:07:27,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-09-25 11:07:27,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 11:07:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-09-25 11:07:27,357 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 87 [2020-09-25 11:07:27,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:27,357 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-09-25 11:07:27,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:07:27,358 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-09-25 11:07:27,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 11:07:27,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:27,359 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:27,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:07:27,360 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:27,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1068467993, now seen corresponding path program 2 times [2020-09-25 11:07:27,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:27,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785515745] [2020-09-25 11:07:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:27,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:27,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:32,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 11:07:32,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 11:07:32,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:07:32,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:32,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:32,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 11:07:32,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:32,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:32,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:32,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:32,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:32,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:32,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:32,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 11:07:37,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:07:37,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:07:37,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:07:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:07:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:37,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 11:07:37,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:07:37,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:37,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:07:37,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:37,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:37,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:37,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:37,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:37,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:37,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:37,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:37,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:37,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:07:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:42,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:07:42,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 11:07:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:07:42,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:42,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 11:07:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:42,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:42,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:42,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:42,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 11:07:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:42,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:42,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:42,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:42,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:42,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:42,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:42,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:42,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:42,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:42,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:42,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:42,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:42,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:07:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:42,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:42,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:42,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:07:42,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:42,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 77 proven. 82 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 11:07:42,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785515745] [2020-09-25 11:07:42,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:42,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:07:42,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672663072] [2020-09-25 11:07:42,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:07:42,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:42,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:07:42,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:07:42,982 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 11 states. [2020-09-25 11:07:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:43,280 INFO L93 Difference]: Finished difference Result 111 states and 148 transitions. [2020-09-25 11:07:43,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:07:43,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 89 [2020-09-25 11:07:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:43,283 INFO L225 Difference]: With dead ends: 111 [2020-09-25 11:07:43,283 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 11:07:43,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:07:43,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 11:07:43,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-09-25 11:07:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 11:07:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-09-25 11:07:43,293 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 89 [2020-09-25 11:07:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:43,293 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-09-25 11:07:43,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:07:43,293 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-09-25 11:07:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 11:07:43,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:43,295 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:43,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:07:43,295 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:43,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 2 times [2020-09-25 11:07:43,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:43,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140268231] [2020-09-25 11:07:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking...