/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:25:38,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:25:38,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:25:38,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:25:38,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:25:38,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:25:38,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:25:38,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:25:38,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:25:38,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:25:38,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:25:38,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:25:38,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:25:38,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:25:38,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:25:38,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:25:38,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:25:38,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:25:38,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:25:38,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:25:38,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:25:38,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:25:38,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:25:38,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:25:38,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:25:38,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:25:38,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:25:38,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:25:38,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:25:38,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:25:38,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:25:38,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:25:38,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:25:38,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:25:38,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:25:38,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:25:38,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:25:38,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:25:38,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:25:38,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:25:38,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:25:38,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:25:38,278 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:25:38,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:25:38,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:25:38,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:25:38,280 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:25:38,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:25:38,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:25:38,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:25:38,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:25:38,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:25:38,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:25:38,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:25:38,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:25:38,284 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:25:38,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:25:38,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:25:38,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:25:38,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:25:38,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:25:38,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:25:38,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:25:38,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:38,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:25:38,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:25:38,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:25:38,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:25:38,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:25:38,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:25:38,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:25:38,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:25:38,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:25:38,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:25:38,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:25:38,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:25:38,827 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:25:38,828 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 12:25:38,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da2ebc940/32de140c35d54801a3b20da4f2a4fcad/FLAGe0affd580 [2020-09-25 12:25:39,577 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:25:39,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 12:25:39,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da2ebc940/32de140c35d54801a3b20da4f2a4fcad/FLAGe0affd580 [2020-09-25 12:25:39,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da2ebc940/32de140c35d54801a3b20da4f2a4fcad [2020-09-25 12:25:39,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:25:39,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:25:39,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:39,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:25:39,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:25:39,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:39" (1/1) ... [2020-09-25 12:25:39,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:39, skipping insertion in model container [2020-09-25 12:25:39,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:39" (1/1) ... [2020-09-25 12:25:39,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:25:39,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:25:40,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:40,399 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:25:40,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:40,707 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:25:40,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40 WrapperNode [2020-09-25 12:25:40,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:40,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:25:40,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:25:40,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:25:40,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:25:40,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:25:40,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:25:40,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:25:40,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:40,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:25:40,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:25:40,961 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:25:40,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:25:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:25:40,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:25:40,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:25:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:25:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:25:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:25:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:25:42,730 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:25:42,730 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:25:42,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:42 BoogieIcfgContainer [2020-09-25 12:25:42,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:25:42,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:25:42,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:25:42,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:25:42,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:25:39" (1/3) ... [2020-09-25 12:25:42,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e8696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:42, skipping insertion in model container [2020-09-25 12:25:42,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (2/3) ... [2020-09-25 12:25:42,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526e8696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:42, skipping insertion in model container [2020-09-25 12:25:42,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:42" (3/3) ... [2020-09-25 12:25:42,750 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label57.c [2020-09-25 12:25:42,762 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:25:42,774 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:25:42,796 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:25:42,831 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:25:42,832 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:25:42,832 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:25:42,832 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:25:42,832 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:25:42,832 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:25:42,833 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:25:42,833 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:25:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:25:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 12:25:42,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:42,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:42,889 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:42,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:42,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1788019222, now seen corresponding path program 1 times [2020-09-25 12:25:42,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:42,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436210047] [2020-09-25 12:25:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:43,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:43,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:44,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:47,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:47,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:48,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 12:25:48,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:25:48,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-09-25 12:25:48,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:48,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:25:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 12:25:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:25:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:48,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:48,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:48,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 12:25:48,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:48,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:25:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:48,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436210047] [2020-09-25 12:25:48,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:25:48,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:25:48,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637391381] [2020-09-25 12:25:48,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:25:48,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:48,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:25:48,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:25:48,660 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:25:50,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:50,976 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 12:25:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:25:50,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-09-25 12:25:50,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:51,017 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 12:25:51,017 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 12:25:51,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:51,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 12:25:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 12:25:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 12:25:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 12:25:51,163 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 117 [2020-09-25 12:25:51,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:51,164 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 12:25:51,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:25:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 12:25:51,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 12:25:51,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:51,178 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:51,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:25:51,179 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:51,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:51,179 INFO L82 PathProgramCache]: Analyzing trace with hash -890048490, now seen corresponding path program 1 times [2020-09-25 12:25:51,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:51,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220025444] [2020-09-25 12:25:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:51,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:51,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:52,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:53,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:56,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 12:25:56,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:25:56,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 12:25:56,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:56,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:56,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 12:25:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 12:25:56,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:56,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:56,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:56,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:56,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:25:56,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:56,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:56,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:56,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:56,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:56,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:56,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:56,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:25:56,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:56,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 12:25:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:56,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220025444] [2020-09-25 12:25:56,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:56,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:56,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148694169] [2020-09-25 12:25:56,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:56,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:56,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:56,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:56,579 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 12:25:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:58,261 INFO L93 Difference]: Finished difference Result 1622 states and 2084 transitions. [2020-09-25 12:25:58,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:58,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 12:25:58,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:58,270 INFO L225 Difference]: With dead ends: 1622 [2020-09-25 12:25:58,271 INFO L226 Difference]: Without dead ends: 979 [2020-09-25 12:25:58,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:25:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-09-25 12:25:58,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 967. [2020-09-25 12:25:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-09-25 12:25:58,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1216 transitions. [2020-09-25 12:25:58,317 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1216 transitions. Word has length 135 [2020-09-25 12:25:58,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:58,318 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1216 transitions. [2020-09-25 12:25:58,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:58,318 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1216 transitions. [2020-09-25 12:25:58,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 12:25:58,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:58,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:58,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:25:58,327 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:58,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:58,327 INFO L82 PathProgramCache]: Analyzing trace with hash -334312447, now seen corresponding path program 1 times [2020-09-25 12:25:58,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:58,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569877042] [2020-09-25 12:25:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:58,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:01,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:01,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:03,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 12:26:03,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:26:03,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 12:26:03,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:03,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:03,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:26:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 12:26:03,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:03,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:03,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:03,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:03,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:26:03,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:03,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:26:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:03,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:03,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 12:26:03,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:03,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 12:26:03,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:03,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 12:26:03,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:26:03,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569877042] [2020-09-25 12:26:03,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:03,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:26:03,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369050565] [2020-09-25 12:26:03,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:26:03,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:03,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:26:03,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:03,733 INFO L87 Difference]: Start difference. First operand 967 states and 1216 transitions. Second operand 6 states. [2020-09-25 12:26:06,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:06,084 INFO L93 Difference]: Finished difference Result 2731 states and 3546 transitions. [2020-09-25 12:26:06,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:26:06,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 12:26:06,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:06,096 INFO L225 Difference]: With dead ends: 2731 [2020-09-25 12:26:06,096 INFO L226 Difference]: Without dead ends: 1786 [2020-09-25 12:26:06,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:06,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2020-09-25 12:26:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1725. [2020-09-25 12:26:06,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-09-25 12:26:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2197 transitions. [2020-09-25 12:26:06,159 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2197 transitions. Word has length 161 [2020-09-25 12:26:06,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:06,160 INFO L479 AbstractCegarLoop]: Abstraction has 1725 states and 2197 transitions. [2020-09-25 12:26:06,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:26:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2197 transitions. [2020-09-25 12:26:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 12:26:06,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:06,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:06,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:06,169 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:06,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:06,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1304518793, now seen corresponding path program 1 times [2020-09-25 12:26:06,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:06,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986869053] [2020-09-25 12:26:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:06,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:06,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:11,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:11,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 12:26:11,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:26:11,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 12:26:11,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:11,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 12:26:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 12:26:11,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:11,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:11,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:11,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:11,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:11,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:26:11,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:11,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:11,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:11,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:11,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:26:11,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:11,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:26:11,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:11,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:11,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:11,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:26:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:11,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:11,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:11,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:26:11,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 12:26:11,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:11,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:26:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:26:11,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986869053] [2020-09-25 12:26:11,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:11,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:26:11,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390501883] [2020-09-25 12:26:11,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:11,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:11,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:11,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:11,482 INFO L87 Difference]: Start difference. First operand 1725 states and 2197 transitions. Second operand 5 states. [2020-09-25 12:26:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:13,596 INFO L93 Difference]: Finished difference Result 4555 states and 6006 transitions. [2020-09-25 12:26:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:26:13,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 12:26:13,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:13,613 INFO L225 Difference]: With dead ends: 4555 [2020-09-25 12:26:13,614 INFO L226 Difference]: Without dead ends: 2852 [2020-09-25 12:26:13,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:13,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-09-25 12:26:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2797. [2020-09-25 12:26:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2797 states. [2020-09-25 12:26:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3405 transitions. [2020-09-25 12:26:13,726 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3405 transitions. Word has length 173 [2020-09-25 12:26:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:13,727 INFO L479 AbstractCegarLoop]: Abstraction has 2797 states and 3405 transitions. [2020-09-25 12:26:13,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3405 transitions. [2020-09-25 12:26:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 12:26:13,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:13,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:13,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:13,743 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:13,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:13,744 INFO L82 PathProgramCache]: Analyzing trace with hash 455996372, now seen corresponding path program 1 times [2020-09-25 12:26:13,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:13,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163794953] [2020-09-25 12:26:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:13,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:14,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 12:26:18,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:18,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:26:18,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 12:26:18,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 12:26:18,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:18,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:26:18,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:18,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:18,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:26:18,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:18,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:26:18,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:18,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:18,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:26:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:26:18,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:18,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:26:18,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:18,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:18,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:18,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:18,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 12:26:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 12:26:18,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:26:18,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:26:18,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:26:19,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163794953] [2020-09-25 12:26:19,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:19,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:26:19,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697192166] [2020-09-25 12:26:19,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:19,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:19,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:19,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:19,031 INFO L87 Difference]: Start difference. First operand 2797 states and 3405 transitions. Second operand 5 states. [2020-09-25 12:26:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:21,255 INFO L93 Difference]: Finished difference Result 6840 states and 8695 transitions. [2020-09-25 12:26:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:26:21,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-09-25 12:26:21,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:21,276 INFO L225 Difference]: With dead ends: 6840 [2020-09-25 12:26:21,276 INFO L226 Difference]: Without dead ends: 4065 [2020-09-25 12:26:21,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2020-09-25 12:26:21,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 4015. [2020-09-25 12:26:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4015 states. [2020-09-25 12:26:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 4902 transitions. [2020-09-25 12:26:21,429 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 4902 transitions. Word has length 196 [2020-09-25 12:26:21,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:21,430 INFO L479 AbstractCegarLoop]: Abstraction has 4015 states and 4902 transitions. [2020-09-25 12:26:21,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 4902 transitions. [2020-09-25 12:26:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 12:26:21,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:21,445 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:21,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:21,446 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:21,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:21,446 INFO L82 PathProgramCache]: Analyzing trace with hash 910845494, now seen corresponding path program 1 times [2020-09-25 12:26:21,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:21,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036937469] [2020-09-25 12:26:21,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:21,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 12:26:26,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:26:26,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 12:26:26,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 12:26:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 12:26:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:26,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:26,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:26,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:26:26,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:26,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:26,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:26,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:26:26,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:26:26,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:26,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:26:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:26:26,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:26,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:26:26,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:26,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:26,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 12:26:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:26,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:26:26,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:26,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:26:26,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:26:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:26,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 12:26:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:26:26,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:26,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:26:26,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:26,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:26,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:26:26,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:26,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 12:26:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:26,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:26:26,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:26,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 12:26:26,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:26,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:26,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 12:26:26,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 168 proven. 8 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 12:26:26,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036937469] [2020-09-25 12:26:26,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:26,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:26,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770608865] [2020-09-25 12:26:26,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:26,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:26,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:26,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:26,914 INFO L87 Difference]: Start difference. First operand 4015 states and 4902 transitions. Second operand 8 states.