/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=SHALLOWEST --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_20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:46:03,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:46:03,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:46:03,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:46:03,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:46:03,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:46:03,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:46:03,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:46:03,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:46:03,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:46:03,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:46:03,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:46:03,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:46:03,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:46:03,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:46:03,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:46:03,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:46:03,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:46:03,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:46:03,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:46:03,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:46:03,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:46:03,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:46:03,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:46:03,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:46:03,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:46:03,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:46:03,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:46:03,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:46:03,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:46:03,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:46:03,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:46:03,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:46:03,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:46:03,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:46:03,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:46:03,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:46:03,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:46:03,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:46:03,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:46:03,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:46:03,819 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 [2020-09-24 23:46:03,846 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:46:03,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:46:03,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:46:03,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:46:03,849 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:46:03,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:46:03,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:46:03,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:46:03,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:46:03,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:46:03,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:46:03,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:46:03,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:46:03,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:46:03,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:46:03,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:46:03,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:46:03,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:46:03,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:46:03,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:46:03,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:46:03,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:46:03,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:46:03,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:46:03,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:46:03,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:46:03,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:46:03,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:46:03,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:46:03,854 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:46:04,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:46:04,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:46:04,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:46:04,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:46:04,373 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:46:04,375 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-24 23:46:04,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b193e3c35/1932858023294d9e8cb27ef979072403/FLAGb7c4eb522 [2020-09-24 23:46:05,044 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:46:05,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-24 23:46:05,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b193e3c35/1932858023294d9e8cb27ef979072403/FLAGb7c4eb522 [2020-09-24 23:46:05,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b193e3c35/1932858023294d9e8cb27ef979072403 [2020-09-24 23:46:05,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:46:05,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:46:05,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:46:05,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:46:05,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:46:05,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:46:05" (1/1) ... [2020-09-24 23:46:05,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:05, skipping insertion in model container [2020-09-24 23:46:05,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:46:05" (1/1) ... [2020-09-24 23:46:05,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:46:05,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:46:05,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:46:05,678 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:46:05,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:46:05,728 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:46:05,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:05 WrapperNode [2020-09-24 23:46:05,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:46:05,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:46:05,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:46:05,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:46:05,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:05" (1/1) ... [2020-09-24 23:46:05,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:05" (1/1) ... [2020-09-24 23:46:05,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:05" (1/1) ... [2020-09-24 23:46:05,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:05" (1/1) ... [2020-09-24 23:46:05,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:05" (1/1) ... [2020-09-24 23:46:05,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:05" (1/1) ... [2020-09-24 23:46:05,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:05" (1/1) ... [2020-09-24 23:46:05,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:46:05,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:46:05,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:46:05,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:46:05,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:05" (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 [2020-09-24 23:46:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:46:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:46:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 23:46:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:46:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:46:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:46:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 23:46:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:46:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:46:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:46:06,141 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:46:06,141 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:46:06,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:46:06 BoogieIcfgContainer [2020-09-24 23:46:06,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:46:06,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:46:06,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:46:06,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:46:06,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:46:05" (1/3) ... [2020-09-24 23:46:06,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:46:06, skipping insertion in model container [2020-09-24 23:46:06,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:05" (2/3) ... [2020-09-24 23:46:06,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:46:06, skipping insertion in model container [2020-09-24 23:46:06,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:46:06" (3/3) ... [2020-09-24 23:46:06,159 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_20-2.c [2020-09-24 23:46:06,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:46:06,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:46:06,201 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:46:06,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:46:06,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:46:06,231 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:46:06,231 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:46:06,231 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:46:06,231 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:46:06,231 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:46:06,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:46:06,252 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 23:46:06,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 23:46:06,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:06,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:06,261 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:06,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:06,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 23:46:06,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:06,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787378329] [2020-09-24 23:46:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:06,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:46:06,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:06,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 23:46:06,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:46:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:46:06,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:06,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:06,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:06,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:06,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:46:06,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:06,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:06,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:06,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:06,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:06,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:06,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:06,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:46:06,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:06,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:06,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:46:06,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787378329] [2020-09-24 23:46:06,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:46:06,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:46:06,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271617329] [2020-09-24 23:46:06,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:46:06,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:06,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:46:06,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:46:06,633 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 23:46:06,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:06,752 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 23:46:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:46:06,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 23:46:06,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:06,770 INFO L225 Difference]: With dead ends: 44 [2020-09-24 23:46:06,771 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 23:46:06,776 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 [2020-09-24 23:46:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 23:46:06,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 23:46:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:46:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 23:46:06,837 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 23:46:06,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:06,838 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 23:46:06,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:46:06,838 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 23:46:06,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 23:46:06,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:06,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:06,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:46:06,842 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:06,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:06,842 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 23:46:06,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:06,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140226502] [2020-09-24 23:46:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:06,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:07,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:07,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:46:07,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:07,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 23:46:07,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:07,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:07,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:07,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:07,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:07,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:07,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:07,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:07,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:07,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:07,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:46:07,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:07,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:07,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:07,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:07,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:07,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:07,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:07,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:07,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 23:46:07,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:46:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:07,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:46:07,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140226502] [2020-09-24 23:46:07,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:46:07,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:46:07,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489057866] [2020-09-24 23:46:07,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:46:07,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:07,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:46:07,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:46:07,120 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 23:46:07,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:07,213 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 23:46:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:46:07,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 23:46:07,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:07,216 INFO L225 Difference]: With dead ends: 36 [2020-09-24 23:46:07,216 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 23:46:07,217 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 [2020-09-24 23:46:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 23:46:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 23:46:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:46:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 23:46:07,226 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 23:46:07,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:07,227 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 23:46:07,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:46:07,227 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 23:46:07,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 23:46:07,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:07,229 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] [2020-09-24 23:46:07,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:46:07,230 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:07,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:07,230 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 23:46:07,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:07,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105747770] [2020-09-24 23:46:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:07,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:07,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:07,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:07,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:07,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 23:46:07,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:46:07,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-09-24 23:46:07,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:46:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:46:07,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:08,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:08,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:08,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:08,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:08,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:46:08,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:08,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:08,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:08,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:08,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:08,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:08,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:46:08,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:46:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-24 23:46:08,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:46:08,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:08,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:08,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:08,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:08,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:08,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:08,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:46:08,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:08,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:08,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:08,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:08,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:08,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:08,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:08,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:46:08,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:08,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:46:08,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105747770] [2020-09-24 23:46:08,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:08,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:46:08,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153184971] [2020-09-24 23:46:08,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:46:08,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:08,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:46:08,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:46:08,493 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 23:46:08,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:08,730 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 23:46:08,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:46:08,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 23:46:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:08,735 INFO L225 Difference]: With dead ends: 44 [2020-09-24 23:46:08,735 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 23:46:08,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:46:08,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 23:46:08,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 23:46:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 23:46:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 23:46:08,759 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 23:46:08,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:08,760 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 23:46:08,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:46:08,760 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 23:46:08,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 23:46:08,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:08,767 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] [2020-09-24 23:46:08,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:46:08,768 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:08,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:08,768 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 23:46:08,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:08,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967274364] [2020-09-24 23:46:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:08,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:08,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:09,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:09,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 23:46:09,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-09-24 23:46:09,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:46:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:09,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:09,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:09,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:09,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:09,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:09,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:46:09,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:09,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:09,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:09,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:09,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:09,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:09,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:46:09,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:46:09,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-09-24 23:46:09,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:46:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:09,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:09,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:09,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:09,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:09,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:09,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 23:46:09,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:46:09,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:10,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:46:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:10,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:10,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:10,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:46:10,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:10,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:46:10,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967274364] [2020-09-24 23:46:10,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:10,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:46:10,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058531501] [2020-09-24 23:46:10,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:46:10,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:10,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:46:10,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:46:10,037 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-24 23:46:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:10,171 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2020-09-24 23:46:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:46:10,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 23:46:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:10,175 INFO L225 Difference]: With dead ends: 88 [2020-09-24 23:46:10,175 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 23:46:10,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:46:10,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 23:46:10,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-24 23:46:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 23:46:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-24 23:46:10,196 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 35 [2020-09-24 23:46:10,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:10,196 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-24 23:46:10,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:46:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-24 23:46:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 23:46:10,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:10,200 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:10,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:46:10,201 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:10,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:10,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 23:46:10,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:10,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886606519] [2020-09-24 23:46:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:10,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:15,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 23:46:15,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:46:15,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 23:46:15,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 23:46:15,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:15,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:15,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:15,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:15,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:46:15,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:15,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:16,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:19,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:46:19,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:46:19,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4366 [2020-09-24 23:46:19,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:46:19,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:19,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:19,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:46:19,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:46:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 23:46:19,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:46:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:46:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:19,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:19,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:19,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:46:19,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:19,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:19,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:19,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:19,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:19,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:19,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:46:19,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:19,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:19,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:46:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:19,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:19,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:19,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:19,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:19,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:46:19,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:19,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:19,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:19,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:19,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 23:46:19,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886606519] [2020-09-24 23:46:19,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:19,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 23:46:19,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729488175] [2020-09-24 23:46:19,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:46:19,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:19,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:46:19,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:46:19,888 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 8 states. [2020-09-24 23:46:20,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:20,025 INFO L93 Difference]: Finished difference Result 120 states and 194 transitions. [2020-09-24 23:46:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:46:20,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 23:46:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:20,033 INFO L225 Difference]: With dead ends: 120 [2020-09-24 23:46:20,033 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 23:46:20,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:46:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 23:46:20,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-09-24 23:46:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 23:46:20,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2020-09-24 23:46:20,075 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 51 [2020-09-24 23:46:20,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:20,075 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2020-09-24 23:46:20,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:46:20,075 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2020-09-24 23:46:20,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 23:46:20,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:20,086 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:46:20,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:46:20,086 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:20,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:20,088 INFO L82 PathProgramCache]: Analyzing trace with hash 182663806, now seen corresponding path program 2 times [2020-09-24 23:46:20,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:20,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201871284] [2020-09-24 23:46:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:22,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:25,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 23:46:25,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:46:25,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 23:46:25,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:25,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 23:46:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:25,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:25,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:25,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:25,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:46:25,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:25,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:25,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:25,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:25,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:27,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:30,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 23:46:30,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 23:46:30,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 23:46:30,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:46:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 23:46:30,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:30,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:30,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:33,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:46:33,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:46:33,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3189 [2020-09-24 23:46:33,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:46:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 23:46:33,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:33,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:33,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:46:33,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:33,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 23:46:33,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:46:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:46:33,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:33,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:33,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:33,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:33,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:33,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:46:33,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:33,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:46:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:33,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:33,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:33,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:33,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:46:33,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:33,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:33,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:33,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:33,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:46:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:33,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:33,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:33,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:46:33,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:33,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 23:46:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:33,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:33,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:33,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:33,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:46:33,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:33,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:33,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:33,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:33,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:46:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 61 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-24 23:46:33,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201871284] [2020-09-24 23:46:33,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:33,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 23:46:33,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452817284] [2020-09-24 23:46:33,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:46:33,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:33,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:46:33,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:46:33,550 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand 8 states. [2020-09-24 23:46:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:46:33,676 INFO L93 Difference]: Finished difference Result 108 states and 159 transitions. [2020-09-24 23:46:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:46:33,678 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-24 23:46:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:46:33,680 INFO L225 Difference]: With dead ends: 108 [2020-09-24 23:46:33,680 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 23:46:33,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:46:33,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 23:46:33,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2020-09-24 23:46:33,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 23:46:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 139 transitions. [2020-09-24 23:46:33,719 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 139 transitions. Word has length 69 [2020-09-24 23:46:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:46:33,720 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 139 transitions. [2020-09-24 23:46:33,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:46:33,720 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 139 transitions. [2020-09-24 23:46:33,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 23:46:33,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:46:33,725 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] [2020-09-24 23:46:33,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:46:33,726 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:46:33,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:46:33,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 3 times [2020-09-24 23:46:33,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:46:33,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504699301] [2020-09-24 23:46:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:46:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:33,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:33,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:35,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:38,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:38,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 23:46:38,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 23:46:38,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 23:46:38,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:38,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:46:38,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:46:38,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 23:46:38,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:38,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:46:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:38,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:38,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:38,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:46:38,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:38,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:46:38,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:38,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:46:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:38,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:38,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:38,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:39,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:39,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:39,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:39,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:39,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:39,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:39,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:40,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:41,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:41,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:43,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 23:46:43,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 23:46:43,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 23:46:43,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:46:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:46:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 23:46:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:43,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:48,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:48,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:48,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:46:48,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:46:48,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:46:48,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:46:48,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:48,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:46:48,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:48,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:48,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:48,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:46:48,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:46:48,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:46:48,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:48,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:48,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:48,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:48,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:46:48,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:46:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:48,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:48,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:48,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:48,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:48,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:46:48,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:46:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:46:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:48,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:46:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:48,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:48,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:48,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:48,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:48,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:46:48,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:46:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 23:46:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:48,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:49,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:49,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:49,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:49,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:49,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:53,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:53,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 23:46:53,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 23:46:53,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 23:46:53,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:46:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:46:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 23:46:53,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:54,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:54,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:54,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:54,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:57,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:57,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:46:57,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 23:46:57,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3748 [2020-09-24 23:46:57,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:46:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:46:57,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:57,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:57,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:57,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:58,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:58,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:46:58,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:46:58,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-24 23:46:58,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:46:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:58,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:46:58,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:46:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:58,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:58,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:58,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:58,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:46:58,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 23:46:58,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:58,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:46:58,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:58,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:46:58,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:46:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:58,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:58,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:46:58,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:58,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:46:58,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:46:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:58,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:46:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:58,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:58,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:58,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:58,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:58,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:46:58,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:58,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:58,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 23:46:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:46:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:46:58,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:46:58,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:46:58,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:46:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:46:58,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:46:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:46:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:46:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:46:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:46:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 192 proven. 139 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-09-24 23:46:58,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504699301] [2020-09-24 23:46:58,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:46:58,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 23:46:58,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711711142] [2020-09-24 23:46:58,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:46:58,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:46:58,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:46:58,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:46:58,266 INFO L87 Difference]: Start difference. First operand 92 states and 139 transitions. Second operand 14 states.