/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:16:28,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:16:28,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:16:28,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:16:28,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:16:28,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:16:28,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:16:28,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:16:28,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:16:28,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:16:28,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:16:28,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:16:28,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:16:28,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:16:28,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:16:28,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:16:28,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:16:28,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:16:28,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:16:28,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:16:28,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:16:28,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:16:28,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:16:28,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:16:28,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:16:28,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:16:28,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:16:28,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:16:28,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:16:28,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:16:28,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:16:28,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:16:28,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:16:28,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:16:28,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:16:28,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:16:28,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:16:28,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:16:28,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:16:28,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:16:28,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:16:28,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:16:28,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:16:28,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:16:28,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:16:28,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:16:28,210 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:16:28,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:16:28,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:16:28,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:16:28,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:16:28,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:16:28,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:16:28,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:16:28,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:16:28,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:16:28,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:16:28,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:16:28,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:16:28,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:16:28,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:16:28,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:16:28,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:16:28,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:16:28,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:16:28,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:16:28,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:16:28,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:16:28,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:16:28,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:16:28,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:16:28,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:16:28,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:16:28,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:16:28,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:16:28,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:16:28,734 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:16:28,735 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label27.c [2020-09-25 11:16:28,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67a13058b/c31670570e7246bbad946a6fcae7c575/FLAG5c7ed0be7 [2020-09-25 11:16:29,419 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:16:29,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label27.c [2020-09-25 11:16:29,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67a13058b/c31670570e7246bbad946a6fcae7c575/FLAG5c7ed0be7 [2020-09-25 11:16:29,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67a13058b/c31670570e7246bbad946a6fcae7c575 [2020-09-25 11:16:29,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:16:29,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:16:29,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:29,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:16:29,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:16:29,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:29" (1/1) ... [2020-09-25 11:16:29,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66145f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:29, skipping insertion in model container [2020-09-25 11:16:29,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:29" (1/1) ... [2020-09-25 11:16:29,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:16:29,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:16:30,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:30,178 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:16:30,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:30,466 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:16:30,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30 WrapperNode [2020-09-25 11:16:30,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:30,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:16:30,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:16:30,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:16:30,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... [2020-09-25 11:16:30,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:16:30,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:16:30,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:16:30,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:16:30,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:16:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:16:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:16:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:16:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:16:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:16:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:16:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:16:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:16:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:16:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:16:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:16:31,905 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:16:31,905 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:16:31,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:31 BoogieIcfgContainer [2020-09-25 11:16:31,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:16:31,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:16:31,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:16:31,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:16:31,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:16:29" (1/3) ... [2020-09-25 11:16:31,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c57db81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:31, skipping insertion in model container [2020-09-25 11:16:31,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:30" (2/3) ... [2020-09-25 11:16:31,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c57db81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:31, skipping insertion in model container [2020-09-25 11:16:31,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:31" (3/3) ... [2020-09-25 11:16:31,925 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label27.c [2020-09-25 11:16:31,939 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:16:31,952 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:16:31,977 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:16:32,016 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:16:32,016 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:16:32,017 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:16:32,017 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:16:32,017 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:16:32,017 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:16:32,017 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:16:32,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:16:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:16:32,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 11:16:32,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:32,075 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, 1, 1, 1, 1] [2020-09-25 11:16:32,076 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:32,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:32,085 INFO L82 PathProgramCache]: Analyzing trace with hash 38595514, now seen corresponding path program 1 times [2020-09-25 11:16:32,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:32,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020298479] [2020-09-25 11:16:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:32,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:32,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:34,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:34,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:37,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:37,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 11:16:37,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:16:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:16:37,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:37,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:16:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 11:16:37,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:16:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:37,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:37,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:37,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:37,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:37,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:16:37,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:37,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:37,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:37,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:16:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:37,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020298479] [2020-09-25 11:16:37,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:16:37,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:16:37,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832340782] [2020-09-25 11:16:37,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:16:37,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:37,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:16:37,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:16:37,652 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:16:39,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:39,768 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 11:16:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:16:39,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-09-25 11:16:39,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:39,802 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 11:16:39,802 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 11:16:39,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 11:16:39,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 11:16:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 11:16:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 11:16:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 11:16:39,924 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 121 [2020-09-25 11:16:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:39,926 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 11:16:39,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:16:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 11:16:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 11:16:39,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:39,933 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:39,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:16:39,934 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:39,935 INFO L82 PathProgramCache]: Analyzing trace with hash -406203871, now seen corresponding path program 1 times [2020-09-25 11:16:39,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:39,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037195047] [2020-09-25 11:16:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:40,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:41,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:42,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:43,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:45,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:45,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 11:16:45,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:16:45,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 11:16:45,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:45,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 11:16:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 11:16:45,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:45,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:45,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:45,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:45,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:45,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:16:45,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:45,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:45,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:45,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 11:16:45,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:45,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:45,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:45,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:16:45,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:16:45,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:45,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:45,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:16:45,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:45,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037195047] [2020-09-25 11:16:45,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:45,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:16:45,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124705259] [2020-09-25 11:16:45,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:16:45,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:45,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:16:45,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:16:45,265 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 11:16:47,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:47,089 INFO L93 Difference]: Finished difference Result 1533 states and 1846 transitions. [2020-09-25 11:16:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:16:47,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 11:16:47,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:47,102 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 11:16:47,102 INFO L226 Difference]: Without dead ends: 934 [2020-09-25 11:16:47,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 11:16:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-09-25 11:16:47,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 772. [2020-09-25 11:16:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2020-09-25 11:16:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 953 transitions. [2020-09-25 11:16:47,176 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 953 transitions. Word has length 138 [2020-09-25 11:16:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:47,177 INFO L479 AbstractCegarLoop]: Abstraction has 772 states and 953 transitions. [2020-09-25 11:16:47,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:16:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 953 transitions. [2020-09-25 11:16:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 11:16:47,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:47,183 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:47,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:16:47,184 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:47,184 INFO L82 PathProgramCache]: Analyzing trace with hash 234137921, now seen corresponding path program 1 times [2020-09-25 11:16:47,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:47,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433999926] [2020-09-25 11:16:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:47,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:48,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:48,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 11:16:48,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 951 [2020-09-25 11:16:48,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:48,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:16:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:16:48,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:48,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:48,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:48,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:48,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:48,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:16:48,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:48,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:16:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:48,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:48,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:48,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:16:48,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:48,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:16:48,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:48,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:48,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:16:48,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:16:48,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:48,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433999926] [2020-09-25 11:16:48,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:16:48,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:16:48,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784017847] [2020-09-25 11:16:48,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:16:48,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:48,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:16:48,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:16:48,424 INFO L87 Difference]: Start difference. First operand 772 states and 953 transitions. Second operand 8 states. [2020-09-25 11:16:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:51,281 INFO L93 Difference]: Finished difference Result 2469 states and 3165 transitions. [2020-09-25 11:16:51,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:16:51,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-09-25 11:16:51,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:51,294 INFO L225 Difference]: With dead ends: 2469 [2020-09-25 11:16:51,294 INFO L226 Difference]: Without dead ends: 1719 [2020-09-25 11:16:51,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:16:51,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-09-25 11:16:51,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1642. [2020-09-25 11:16:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2020-09-25 11:16:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2058 transitions. [2020-09-25 11:16:51,354 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2058 transitions. Word has length 147 [2020-09-25 11:16:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:51,355 INFO L479 AbstractCegarLoop]: Abstraction has 1642 states and 2058 transitions. [2020-09-25 11:16:51,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:16:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2058 transitions. [2020-09-25 11:16:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 11:16:51,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:51,362 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:16:51,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:16:51,362 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:51,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:51,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1231543138, now seen corresponding path program 1 times [2020-09-25 11:16:51,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:51,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915855574] [2020-09-25 11:16:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:51,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:51,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:52,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:55,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 11:16:55,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:16:55,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3698 [2020-09-25 11:16:55,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:55,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 11:16:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 11:16:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:55,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:55,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:55,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:55,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:16:55,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:55,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:55,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:16:55,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:55,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:16:55,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:16:55,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:55,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:16:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:55,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 11:16:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:55,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:55,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:16:55,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:55,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 11:16:55,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:55,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:16:55,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:16:55,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:16:55,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915855574] [2020-09-25 11:16:55,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:55,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:16:55,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364679714] [2020-09-25 11:16:55,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:16:55,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:55,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:16:55,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:16:55,451 INFO L87 Difference]: Start difference. First operand 1642 states and 2058 transitions. Second operand 6 states. [2020-09-25 11:16:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:57,726 INFO L93 Difference]: Finished difference Result 4655 states and 6261 transitions. [2020-09-25 11:16:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:16:57,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-09-25 11:16:57,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:57,758 INFO L225 Difference]: With dead ends: 4655 [2020-09-25 11:16:57,758 INFO L226 Difference]: Without dead ends: 3035 [2020-09-25 11:16:57,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:16:57,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2020-09-25 11:16:57,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2585. [2020-09-25 11:16:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2585 states. [2020-09-25 11:16:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3216 transitions. [2020-09-25 11:16:57,932 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3216 transitions. Word has length 171 [2020-09-25 11:16:57,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:57,933 INFO L479 AbstractCegarLoop]: Abstraction has 2585 states and 3216 transitions. [2020-09-25 11:16:57,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:16:57,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3216 transitions. [2020-09-25 11:16:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 11:16:57,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:57,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:57,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:16:57,948 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:57,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:57,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1928572500, now seen corresponding path program 1 times [2020-09-25 11:16:57,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:57,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762258516] [2020-09-25 11:16:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:58,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:58,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:58,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:58,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:01,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 11:17:01,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:17:01,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3561 [2020-09-25 11:17:01,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:01,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:17:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:17:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 11:17:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:01,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:01,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:01,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:17:01,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:01,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:17:01,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:17:01,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:01,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:01,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:17:01,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:01,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:17:01,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:01,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:17:01,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:01,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:17:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:01,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:17:01,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 11:17:01,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:01,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:17:01,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:01,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 11:17:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:01,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:17:01,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 11:17:01,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:01,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:17:01,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 11:17:01,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762258516] [2020-09-25 11:17:01,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:01,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:17:01,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120832335] [2020-09-25 11:17:01,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:17:01,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:01,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:17:01,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:17:01,990 INFO L87 Difference]: Start difference. First operand 2585 states and 3216 transitions. Second operand 9 states. [2020-09-25 11:17:04,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:04,043 INFO L93 Difference]: Finished difference Result 5560 states and 7028 transitions. [2020-09-25 11:17:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:17:04,044 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-09-25 11:17:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:04,061 INFO L225 Difference]: With dead ends: 5560 [2020-09-25 11:17:04,062 INFO L226 Difference]: Without dead ends: 2997 [2020-09-25 11:17:04,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:17:04,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-09-25 11:17:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2585. [2020-09-25 11:17:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2585 states. [2020-09-25 11:17:04,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3199 transitions. [2020-09-25 11:17:04,176 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3199 transitions. Word has length 182 [2020-09-25 11:17:04,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:04,177 INFO L479 AbstractCegarLoop]: Abstraction has 2585 states and 3199 transitions. [2020-09-25 11:17:04,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:17:04,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3199 transitions. [2020-09-25 11:17:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 11:17:04,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:04,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:04,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:17:04,188 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:04,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:04,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1145838343, now seen corresponding path program 1 times [2020-09-25 11:17:04,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:04,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111642974] [2020-09-25 11:17:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:04,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:06,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:06,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 11:17:06,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:06,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1993 [2020-09-25 11:17:06,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:06,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:17:06,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:17:06,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:06,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:06,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:06,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:06,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:06,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:17:06,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:06,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:17:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:06,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:06,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:06,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:06,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:17:06,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:06,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 11:17:06,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:06,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:17:06,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:06,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 11:17:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:06,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:06,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:17:06,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:06,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:17:06,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:06,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:06,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:06,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:17:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:06,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:17:06,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111642974] [2020-09-25 11:17:06,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:06,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:17:06,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766795219] [2020-09-25 11:17:06,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:17:06,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:06,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:17:06,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:17:06,563 INFO L87 Difference]: Start difference. First operand 2585 states and 3199 transitions. Second operand 7 states. [2020-09-25 11:17:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:08,324 INFO L93 Difference]: Finished difference Result 5159 states and 6396 transitions. [2020-09-25 11:17:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:17:08,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-09-25 11:17:08,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:08,339 INFO L225 Difference]: With dead ends: 5159 [2020-09-25 11:17:08,340 INFO L226 Difference]: Without dead ends: 2596 [2020-09-25 11:17:08,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:17:08,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2020-09-25 11:17:08,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 2278. [2020-09-25 11:17:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2278 states. [2020-09-25 11:17:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 2608 transitions. [2020-09-25 11:17:08,434 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 2608 transitions. Word has length 185 [2020-09-25 11:17:08,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:08,435 INFO L479 AbstractCegarLoop]: Abstraction has 2278 states and 2608 transitions. [2020-09-25 11:17:08,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:17:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 2608 transitions. [2020-09-25 11:17:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 11:17:08,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:08,442 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:08,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:17:08,443 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:08,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:08,443 INFO L82 PathProgramCache]: Analyzing trace with hash 2017885958, now seen corresponding path program 1 times [2020-09-25 11:17:08,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:08,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036333039] [2020-09-25 11:17:08,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:10,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:10,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 11:17:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:10,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1646 [2020-09-25 11:17:10,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:10,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 11:17:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:17:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:10,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:10,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:10,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:10,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:10,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:17:10,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:10,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:10,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:10,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:10,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:10,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:17:10,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:17:10,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:10,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:17:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:10,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:17:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:10,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:10,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 11:17:10,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 11:17:10,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:10,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:10,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 11:17:10,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:10,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 11:17:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:10,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:10,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:10,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:17:10,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:17:10,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:10,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:17:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 84 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 11:17:10,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036333039] [2020-09-25 11:17:10,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:10,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:17:10,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340924817] [2020-09-25 11:17:10,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:17:10,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:10,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:17:10,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:17:10,406 INFO L87 Difference]: Start difference. First operand 2278 states and 2608 transitions. Second operand 7 states. [2020-09-25 11:17:12,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:12,232 INFO L93 Difference]: Finished difference Result 5349 states and 6308 transitions. [2020-09-25 11:17:12,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:17:12,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-09-25 11:17:12,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:12,250 INFO L225 Difference]: With dead ends: 5349 [2020-09-25 11:17:12,250 INFO L226 Difference]: Without dead ends: 3093 [2020-09-25 11:17:12,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:17:12,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2020-09-25 11:17:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 2908. [2020-09-25 11:17:12,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2908 states. [2020-09-25 11:17:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3397 transitions. [2020-09-25 11:17:12,326 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3397 transitions. Word has length 210 [2020-09-25 11:17:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:12,326 INFO L479 AbstractCegarLoop]: Abstraction has 2908 states and 3397 transitions. [2020-09-25 11:17:12,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:17:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3397 transitions. [2020-09-25 11:17:12,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 11:17:12,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:12,334 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:12,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:17:12,335 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:12,336 INFO L82 PathProgramCache]: Analyzing trace with hash -329546243, now seen corresponding path program 1 times [2020-09-25 11:17:12,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:12,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595432577] [2020-09-25 11:17:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:12,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:13,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:13,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 11:17:13,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:13,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1563 [2020-09-25 11:17:13,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:13,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:13,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 11:17:13,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:17:13,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:14,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:14,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:14,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:14,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:14,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:14,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:17:14,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:14,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:14,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:14,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:14,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:17:14,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:14,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:17:14,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:14,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:17:14,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:14,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 11:17:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:14,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:14,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:14,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 11:17:14,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:14,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 11:17:14,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:14,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 11:17:14,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:14,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 11:17:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:14,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:14,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:17:14,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:14,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:17:14,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:14,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:17:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:14,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 92 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 11:17:14,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595432577] [2020-09-25 11:17:14,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:14,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:17:14,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581170216] [2020-09-25 11:17:14,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:17:14,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:14,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:17:14,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:17:14,241 INFO L87 Difference]: Start difference. First operand 2908 states and 3397 transitions. Second operand 7 states. [2020-09-25 11:17:17,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:17,555 INFO L93 Difference]: Finished difference Result 7736 states and 9097 transitions. [2020-09-25 11:17:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:17:17,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-09-25 11:17:17,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:17,573 INFO L225 Difference]: With dead ends: 7736 [2020-09-25 11:17:17,573 INFO L226 Difference]: Without dead ends: 4490 [2020-09-25 11:17:17,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:17:17,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2020-09-25 11:17:17,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 4124. [2020-09-25 11:17:17,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4124 states. [2020-09-25 11:17:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 4690 transitions. [2020-09-25 11:17:17,679 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 4690 transitions. Word has length 215 [2020-09-25 11:17:17,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:17,679 INFO L479 AbstractCegarLoop]: Abstraction has 4124 states and 4690 transitions. [2020-09-25 11:17:17,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:17:17,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 4690 transitions. [2020-09-25 11:17:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 11:17:17,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:17,692 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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 11:17:17,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:17:17,692 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:17,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:17,693 INFO L82 PathProgramCache]: Analyzing trace with hash 714539900, now seen corresponding path program 1 times [2020-09-25 11:17:17,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:17,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113659561] [2020-09-25 11:17:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:17,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:18,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:18,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking...