/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:21:08,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:21:08,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:21:08,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:21:08,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:21:08,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:21:08,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:21:08,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:21:08,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:21:08,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:21:08,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:21:08,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:21:08,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:21:08,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:21:08,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:21:08,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:21:08,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:21:08,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:21:08,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:21:08,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:21:08,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:21:08,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:21:08,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:21:08,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:21:08,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:21:08,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:21:08,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:21:08,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:21:08,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:21:08,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:21:08,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:21:08,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:21:08,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:21:08,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:21:08,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:21:08,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:21:08,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:21:08,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:21:08,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:21:08,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:21:08,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:21:08,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:21:08,244 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:21:08,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:21:08,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:21:08,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:21:08,246 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:21:08,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:21:08,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:21:08,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:21:08,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:21:08,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:21:08,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:21:08,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:21:08,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:21:08,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:21:08,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:21:08,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:21:08,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:21:08,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:21:08,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:21:08,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:21:08,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:21:08,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:08,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:21:08,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:21:08,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:21:08,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:21:08,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:21:08,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:21:08,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:21:08,252 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:21:08,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:08,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:08,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:08,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:08,743 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:08,744 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 12:21:08,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11961683f/62edcafd69fe41da8aa61690dbf168bd/FLAGfb5822f06 [2020-09-25 12:21:09,506 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:09,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 12:21:09,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11961683f/62edcafd69fe41da8aa61690dbf168bd/FLAGfb5822f06 [2020-09-25 12:21:09,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11961683f/62edcafd69fe41da8aa61690dbf168bd [2020-09-25 12:21:09,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:09,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:09,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:09,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:09,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:09,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:09" (1/1) ... [2020-09-25 12:21:09,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf0d2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:09, skipping insertion in model container [2020-09-25 12:21:09,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:09" (1/1) ... [2020-09-25 12:21:09,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:09,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:10,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:10,316 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:10,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:10,577 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:10,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10 WrapperNode [2020-09-25 12:21:10,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:10,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:10,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:10,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:10,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:10,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:10,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:10,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:10,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:10,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:10,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:10,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:10,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:10,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:10,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:12,100 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:12,100 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:12,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:12 BoogieIcfgContainer [2020-09-25 12:21:12,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:12,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:12,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:12,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:12,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:09" (1/3) ... [2020-09-25 12:21:12,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158f06ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:12, skipping insertion in model container [2020-09-25 12:21:12,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (2/3) ... [2020-09-25 12:21:12,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158f06ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:12, skipping insertion in model container [2020-09-25 12:21:12,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:12" (3/3) ... [2020-09-25 12:21:12,120 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-25 12:21:12,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:12,145 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:12,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:12,202 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:12,203 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:12,203 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:12,203 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:12,203 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:12,203 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:12,203 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:12,204 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:12,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 12:21:12,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:12,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:12,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:12,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:12,278 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-25 12:21:12,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:12,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364851093] [2020-09-25 12:21:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:12,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:14,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:14,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:15,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:17,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 12:21:17,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:21:17,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 12:21:17,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:17,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:17,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:21:17,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 12:21:17,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:21:17,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:17,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:17,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:17,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 12:21:17,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:17,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:17,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:17,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:21:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:18,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364851093] [2020-09-25 12:21:18,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:18,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:21:18,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170261837] [2020-09-25 12:21:18,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:18,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:18,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:18,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:18,125 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 12:21:20,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:20,296 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 12:21:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:20,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 12:21:20,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:20,330 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 12:21:20,330 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 12:21:20,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 12:21:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 12:21:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:21:20,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 12:21:20,439 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 141 [2020-09-25 12:21:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:20,440 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 12:21:20,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:20,441 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 12:21:20,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 12:21:20,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:20,452 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:20,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:20,453 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:20,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:20,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1608331772, now seen corresponding path program 1 times [2020-09-25 12:21:20,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:20,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236378445] [2020-09-25 12:21:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:22,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:25,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 12:21:25,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:21:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 12:21:25,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:25,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:21:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:21:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:25,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:25,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:25,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:21:25,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:25,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:25,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:25,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:25,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:25,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:25,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:25,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:25,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:25,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 12:21:25,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:25,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:21:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:26,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236378445] [2020-09-25 12:21:26,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:26,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:21:26,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279588450] [2020-09-25 12:21:26,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:21:26,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:26,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:21:26,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:21:26,068 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 9 states. [2020-09-25 12:21:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:30,729 INFO L93 Difference]: Finished difference Result 2047 states and 2738 transitions. [2020-09-25 12:21:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:21:30,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 162 [2020-09-25 12:21:30,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:30,741 INFO L225 Difference]: With dead ends: 2047 [2020-09-25 12:21:30,741 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 12:21:30,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:21:30,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 12:21:30,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1003. [2020-09-25 12:21:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-09-25 12:21:30,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1152 transitions. [2020-09-25 12:21:30,809 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1152 transitions. Word has length 162 [2020-09-25 12:21:30,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:30,810 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1152 transitions. [2020-09-25 12:21:30,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:21:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1152 transitions. [2020-09-25 12:21:30,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:21:30,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:30,816 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:30,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:30,816 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:30,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:30,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1956295493, now seen corresponding path program 1 times [2020-09-25 12:21:30,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:30,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982154224] [2020-09-25 12:21:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:30,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:34,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:34,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:35,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 12:21:35,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:21:35,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-09-25 12:21:35,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:35,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:21:35,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 12:21:35,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:36,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:36,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:21:36,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:36,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:36,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:36,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:36,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:36,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:36,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:36,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:21:36,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:36,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 12:21:36,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:36,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:21:36,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:36,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982154224] [2020-09-25 12:21:36,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:36,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:36,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407700473] [2020-09-25 12:21:36,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:36,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:36,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:36,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:36,210 INFO L87 Difference]: Start difference. First operand 1003 states and 1152 transitions. Second operand 5 states. [2020-09-25 12:21:38,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:38,067 INFO L93 Difference]: Finished difference Result 2685 states and 3155 transitions. [2020-09-25 12:21:38,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:38,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 12:21:38,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:38,079 INFO L225 Difference]: With dead ends: 2685 [2020-09-25 12:21:38,079 INFO L226 Difference]: Without dead ends: 1706 [2020-09-25 12:21:38,083 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 12:21:38,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-09-25 12:21:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1636. [2020-09-25 12:21:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2020-09-25 12:21:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1898 transitions. [2020-09-25 12:21:38,157 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1898 transitions. Word has length 166 [2020-09-25 12:21:38,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:38,166 INFO L479 AbstractCegarLoop]: Abstraction has 1636 states and 1898 transitions. [2020-09-25 12:21:38,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1898 transitions. [2020-09-25 12:21:38,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 12:21:38,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:38,173 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:38,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:38,173 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:38,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:38,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1385463445, now seen corresponding path program 1 times [2020-09-25 12:21:38,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:38,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985632709] [2020-09-25 12:21:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:43,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 12:21:43,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:21:43,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 12:21:43,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:43,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 12:21:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 12:21:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:43,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:43,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:43,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:43,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:43,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:21:43,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:43,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:43,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:43,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:43,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:43,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:21:43,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:43,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:21:43,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:43,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:43,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:21:43,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:43,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985632709] [2020-09-25 12:21:43,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:43,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:43,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785916772] [2020-09-25 12:21:43,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:43,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:43,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:43,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:43,564 INFO L87 Difference]: Start difference. First operand 1636 states and 1898 transitions. Second operand 5 states. [2020-09-25 12:21:45,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:45,372 INFO L93 Difference]: Finished difference Result 3930 states and 4701 transitions. [2020-09-25 12:21:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:45,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 12:21:45,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:45,391 INFO L225 Difference]: With dead ends: 3930 [2020-09-25 12:21:45,391 INFO L226 Difference]: Without dead ends: 2318 [2020-09-25 12:21:45,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2020-09-25 12:21:45,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1924. [2020-09-25 12:21:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1924 states. [2020-09-25 12:21:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2266 transitions. [2020-09-25 12:21:45,489 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2266 transitions. Word has length 167 [2020-09-25 12:21:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:45,489 INFO L479 AbstractCegarLoop]: Abstraction has 1924 states and 2266 transitions. [2020-09-25 12:21:45,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2266 transitions. [2020-09-25 12:21:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 12:21:45,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:45,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:45,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:21:45,499 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:45,500 INFO L82 PathProgramCache]: Analyzing trace with hash -227878836, now seen corresponding path program 1 times [2020-09-25 12:21:45,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:45,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760781453] [2020-09-25 12:21:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:45,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:46,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:46,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:48,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:49,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:49,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:49,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:49,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:50,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 12:21:50,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:21:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:21:50,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:50,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:21:50,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 12:21:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 12:21:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:21:51,380 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2020-09-25 12:21:51,506 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-09-25 12:21:51,632 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2020-09-25 12:21:51,788 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 34 [2020-09-25 12:21:51,940 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 32 [2020-09-25 12:21:52,105 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2020-09-25 12:21:52,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:52,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:52,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:52,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:52,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:52,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:21:52,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:52,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:52,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:52,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:52,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:52,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:52,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:52,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:21:52,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:52,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:21:52,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:52,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:21:52,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:52,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:21:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:52,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:52,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:21:52,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 12:21:52,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:52,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:21:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:21:52,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:21:52,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760781453] [2020-09-25 12:21:52,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:52,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 12:21:52,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001758730] [2020-09-25 12:21:52,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 12:21:52,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:52,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 12:21:52,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:21:52,774 INFO L87 Difference]: Start difference. First operand 1924 states and 2266 transitions. Second operand 20 states. [2020-09-25 12:21:54,668 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-25 12:21:54,882 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-25 12:21:55,996 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-09-25 12:21:56,159 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-25 12:21:56,394 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-09-25 12:21:56,588 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 12:21:57,223 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-25 12:21:57,701 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93